Merge branch 'fabien-feature/polymorphic-rel'
This commit is contained in:
Raymond Feng
commit
c8c499320c
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@ -64,8 +64,11 @@ function RelationDefinition(definition) {
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assert(this.modelFrom, 'Source model is required');
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this.keyFrom = definition.keyFrom;
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this.modelTo = definition.modelTo;
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assert(this.modelTo, 'Target model is required');
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this.keyTo = definition.keyTo;
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this.discriminator = definition.discriminator;
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if (!this.discriminator) {
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assert(this.modelTo, 'Target model is required');
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}
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this.modelThrough = definition.modelThrough;
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this.keyThrough = definition.keyThrough;
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this.multiple = (this.type !== 'belongsTo' && this.type !== 'hasOne');
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@ -97,13 +100,18 @@ RelationDefinition.prototype.toJSON = function () {
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* @param {Object} filter (where, order, limit, fields, ...)
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*/
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RelationDefinition.prototype.applyScope = function(modelInstance, filter) {
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filter.where = filter.where || {};
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if ((this.type !== 'belongsTo' || this.type === 'hasOne')
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&& typeof this.discriminator === 'string') { // polymorphic
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filter.where[this.discriminator] = this.modelFrom.modelName;
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}
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if (typeof this.scope === 'function') {
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var scope = this.scope.call(this, modelInstance, filter);
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if (typeof scope === 'object') {
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mergeQuery(filter, scope);
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}
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} else if (typeof this.scope === 'object') {
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mergeQuery(filter, this.scope);
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} else {
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var scope = this.scope;
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}
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if (typeof scope === 'object') {
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mergeQuery(filter, scope);
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}
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};
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@ -124,6 +132,10 @@ RelationDefinition.prototype.applyProperties = function(modelInstance, target) {
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target[key] = modelInstance[k];
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}
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}
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if ((this.type !== 'belongsTo' || this.type === 'hasOne')
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&& typeof this.discriminator === 'string') { // polymorphic
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target[this.discriminator] = this.modelFrom.modelName;
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}
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};
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/**
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@ -316,6 +328,19 @@ function lookupModel(models, modelName) {
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}
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}
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/*!
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* Normalize polymorphic parameters
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* @param {Object|String} params Name of the polymorphic relation or params
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* @returns {Object} The normalized parameters
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*/
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function polymorphicParams(params) {
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if (typeof params === 'string') params = { as: params };
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if (typeof params.as !== 'string') params.as = 'reference'; // default
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params.foreignKey = params.foreignKey || i8n.camelize(params.as + '_id', true);
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params.discriminator = params.discriminator || i8n.camelize(params.as + '_type', true);
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return params;
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}
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/**
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* Define a "one to many" relationship by specifying the model name
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*
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@ -350,10 +375,23 @@ RelationDefinition.hasMany = function hasMany(modelFrom, modelTo, params) {
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modelTo = lookupModel(modelFrom.dataSource.modelBuilder.models, modelToName);
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}
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}
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var relationName = params.as || i8n.camelize(modelTo.pluralModelName, true);
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var fk = params.foreignKey || i8n.camelize(thisClassName + '_id', true);
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var idName = modelFrom.dataSource.idName(modelFrom.modelName) || 'id';
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var discriminator;
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if (params.polymorphic) {
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var polymorphic = polymorphicParams(params.polymorphic);
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discriminator = polymorphic.discriminator;
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if (!params.invert) {
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fk = polymorphic.foreignKey;
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}
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if (!params.through) {
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modelTo.dataSource.defineProperty(modelTo.modelName, discriminator, { type: 'string', index: true });
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}
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}
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var definition = new RelationDefinition({
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name: relationName,
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@ -361,6 +399,7 @@ RelationDefinition.hasMany = function hasMany(modelFrom, modelTo, params) {
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modelFrom: modelFrom,
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keyFrom: idName,
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keyTo: fk,
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discriminator: discriminator,
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modelTo: modelTo,
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multiple: true,
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properties: params.properties,
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@ -368,16 +407,17 @@ RelationDefinition.hasMany = function hasMany(modelFrom, modelTo, params) {
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options: params.options
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});
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if (params.through) {
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definition.modelThrough = params.through;
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var keyThrough = definition.throughKey || i8n.camelize(modelTo.modelName + '_id', true);
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definition.keyThrough = keyThrough;
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}
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definition.modelThrough = params.through;
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var keyThrough = definition.throughKey || i8n.camelize(modelTo.modelName + '_id', true);
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definition.keyThrough = keyThrough;
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modelFrom.relations[relationName] = definition;
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if (!params.through) {
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// obviously, modelTo should have attribute called `fk`
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// for polymorphic relations, it is assumed to share the same fk type for all
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// polymorphic models
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modelTo.dataSource.defineForeignKey(modelTo.modelName, fk, modelFrom.modelName);
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}
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@ -423,10 +463,15 @@ RelationDefinition.hasMany = function hasMany(modelFrom, modelTo, params) {
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definition.applyScope(this, filter);
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if (params.through) {
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if (params.through && params.polymorphic && params.invert) {
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filter.where[discriminator] = modelTo.modelName; // overwrite
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filter.collect = params.polymorphic;
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filter.include = filter.collect;
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} else if (params.through) {
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filter.collect = i8n.camelize(modelTo.modelName, true);
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filter.include = filter.collect;
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}
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return filter;
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}, scopeMethods);
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@ -555,6 +600,21 @@ HasMany.prototype.destroyById = function (fkId, cb) {
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});
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};
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var throughKeys = function(definition) {
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var modelThrough = definition.modelThrough;
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var pk2 = definition.modelTo.definition.idName();
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if (definition.discriminator) { // polymorphic
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var fk1 = definition.keyTo;
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var fk2 = definition.keyThrough;
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} else {
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var fk1 = findBelongsTo(modelThrough, definition.modelFrom,
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definition.keyFrom);
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var fk2 = findBelongsTo(modelThrough, definition.modelTo, pk2);
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}
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return [fk1, fk2];
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}
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/**
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* Find a related item by foreign key
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* @param {*} fkId The foreign key value
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@ -629,7 +689,7 @@ HasManyThrough.prototype.create = function create(data, done) {
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var definition = this.definition;
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var modelTo = definition.modelTo;
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var modelThrough = definition.modelThrough;
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if (typeof data === 'function' && !done) {
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done = data;
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data = {};
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@ -644,9 +704,11 @@ HasManyThrough.prototype.create = function create(data, done) {
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}
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// The primary key for the target model
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var pk2 = definition.modelTo.definition.idName();
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var fk1 = findBelongsTo(modelThrough, definition.modelFrom,
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definition.keyFrom);
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var fk2 = findBelongsTo(modelThrough, definition.modelTo, pk2);
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var keys = throughKeys(definition);
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var fk1 = keys[0];
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var fk2 = keys[1];
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var d = {};
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d[fk1] = modelInstance[definition.keyFrom];
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d[fk2] = to[pk2];
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@ -668,6 +730,8 @@ HasManyThrough.prototype.create = function create(data, done) {
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});
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};
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/**
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* Add the target model instance to the 'hasMany' relation
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* @param {Object|ID} acInst The actual instance or id value
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@ -680,14 +744,13 @@ HasManyThrough.prototype.add = function (acInst, done) {
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var data = {};
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var query = {};
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var fk1 = findBelongsTo(modelThrough, definition.modelFrom,
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definition.keyFrom);
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// The primary key for the target model
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var pk2 = definition.modelTo.definition.idName();
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var fk2 = findBelongsTo(modelThrough, definition.modelTo, pk2);
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var keys = throughKeys(definition);
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var fk1 = keys[0];
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var fk2 = keys[1];
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query[fk1] = this.modelInstance[pk1];
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query[fk2] = (acInst instanceof definition.modelTo) ? acInst[pk2] : acInst;
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@ -698,6 +761,7 @@ HasManyThrough.prototype.add = function (acInst, done) {
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data[fk1] = this.modelInstance[pk1];
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data[fk2] = (acInst instanceof definition.modelTo) ? acInst[pk2] : acInst;
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definition.applyProperties(this.modelInstance, data);
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// Create an instance of the through model
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@ -722,18 +786,21 @@ HasManyThrough.prototype.exists = function (acInst, done) {
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var query = {};
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var fk1 = findBelongsTo(modelThrough, definition.modelFrom,
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definition.keyFrom);
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// The primary key for the target model
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var pk2 = definition.modelTo.definition.idName();
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var fk2 = findBelongsTo(modelThrough, definition.modelTo, pk2);
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var keys = throughKeys(definition);
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var fk1 = keys[0];
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var fk2 = keys[1];
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query[fk1] = this.modelInstance[pk1];
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query[fk2] = (acInst instanceof definition.modelTo) ? acInst[pk2] : acInst;
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modelThrough.count(query, function(err, ac) {
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var filter = { where: query };
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definition.applyScope(this.modelInstance, filter);
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modelThrough.count(filter.where, function(err, ac) {
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done(err, ac > 0);
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});
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};
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@ -750,13 +817,12 @@ HasManyThrough.prototype.remove = function (acInst, done) {
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var query = {};
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var fk1 = findBelongsTo(modelThrough, definition.modelFrom,
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definition.keyFrom);
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// The primary key for the target model
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var pk2 = definition.modelTo.definition.idName();
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var fk2 = findBelongsTo(modelThrough, definition.modelTo, pk2);
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var keys = throughKeys(definition);
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var fk1 = keys[0];
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var fk2 = keys[1];
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query[fk1] = this.modelInstance[pk1];
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query[fk2] = (acInst instanceof definition.modelTo) ? acInst[pk2] : acInst;
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@ -764,7 +830,7 @@ HasManyThrough.prototype.remove = function (acInst, done) {
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var filter = { where: query };
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definition.applyScope(this.modelInstance, filter);
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modelThrough.deleteAll(filter.where, function (err) {
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if (!err) {
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self.removeFromCache(query[fk2]);
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@ -799,8 +865,9 @@ HasManyThrough.prototype.remove = function (acInst, done) {
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*
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*/
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RelationDefinition.belongsTo = function (modelFrom, modelTo, params) {
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var discriminator, polymorphic;
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params = params || {};
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if ('string' === typeof modelTo) {
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if ('string' === typeof modelTo && !params.polymorphic) {
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params.as = modelTo;
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if (params.model) {
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modelTo = params.model;
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@ -810,9 +877,36 @@ RelationDefinition.belongsTo = function (modelFrom, modelTo, params) {
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}
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}
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var idName = modelFrom.dataSource.idName(modelTo.modelName) || 'id';
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var relationName = params.as || i8n.camelize(modelTo.modelName, true);
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var fk = params.foreignKey || relationName + 'Id';
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var idName, relationName, fk;
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if (params.polymorphic) {
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if (params.polymorphic === true) {
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// modelTo arg will be the name of the polymorphic relation (string)
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polymorphic = polymorphicParams(modelTo);
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} else {
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polymorphic = polymorphicParams(params.polymorphic);
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}
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modelTo = null; // will lookup dynamically
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idName = params.idName || 'id';
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relationName = params.as || polymorphic.as;
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fk = polymorphic.foreignKey;
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discriminator = polymorphic.discriminator;
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if (typeof polymorphic.idType === 'string') { // explicit key type
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modelFrom.dataSource.defineProperty(modelFrom.modelName, fk, { type: polymorphic.idType, index: true });
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} else { // try to use the same foreign key type as modelFrom
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modelFrom.dataSource.defineForeignKey(modelFrom.modelName, fk, modelFrom.modelName);
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}
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modelFrom.dataSource.defineProperty(modelFrom.modelName, discriminator, { type: 'string', index: true });
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} else {
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idName = modelFrom.dataSource.idName(modelTo.modelName) || 'id';
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relationName = params.as || i8n.camelize(modelTo.modelName, true);
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fk = params.foreignKey || relationName + 'Id';
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modelFrom.dataSource.defineForeignKey(modelFrom.modelName, fk, modelTo.modelName);
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}
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var relationDef = modelFrom.relations[relationName] = new RelationDefinition({
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name: relationName,
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@ -820,14 +914,13 @@ RelationDefinition.belongsTo = function (modelFrom, modelTo, params) {
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modelFrom: modelFrom,
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keyFrom: fk,
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keyTo: idName,
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discriminator: discriminator,
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modelTo: modelTo,
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properties: params.properties,
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scope: params.scope,
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options: params.options
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});
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modelFrom.dataSource.defineForeignKey(modelFrom.modelName, fk, modelTo.modelName);
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// Define a property for the scope so that we have 'this' for the scoped methods
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Object.defineProperty(modelFrom.prototype, relationName, {
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enumerable: true,
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@ -837,7 +930,9 @@ RelationDefinition.belongsTo = function (modelFrom, modelTo, params) {
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var relationMethod = relation.related.bind(relation);
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relationMethod.create = relation.create.bind(relation);
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relationMethod.build = relation.build.bind(relation);
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relationMethod._targetClass = relationDef.modelTo.modelName;
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if (relationDef.modelTo) {
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relationMethod._targetClass = relationDef.modelTo.modelName;
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}
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return relationMethod;
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}
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});
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@ -865,7 +960,7 @@ BelongsTo.prototype.create = function(targetModelData, cb) {
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}
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this.definition.applyProperties(modelInstance, targetModelData || {});
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modelTo.create(targetModelData, function(err, targetModel) {
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if(!err) {
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modelInstance[fk] = targetModel[pk];
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@ -896,7 +991,9 @@ BelongsTo.prototype.build = function(targetModelData) {
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*/
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BelongsTo.prototype.related = function (refresh, params) {
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var self = this;
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var modelFrom = this.definition.modelFrom;
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var modelTo = this.definition.modelTo;
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var discriminator = this.definition.discriminator;
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var pk = this.definition.keyTo;
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var fk = this.definition.keyFrom;
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var modelInstance = this.modelInstance;
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@ -907,15 +1004,30 @@ BelongsTo.prototype.related = function (refresh, params) {
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} else if (arguments.length > 2) {
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throw new Error('Method can\'t be called with more than two arguments');
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}
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|
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|
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var cachedValue;
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if (!refresh) {
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cachedValue = self.getCache();
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}
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if (params instanceof ModelBaseClass) { // acts as setter
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modelTo = params.constructor;
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modelInstance[fk] = params[pk];
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if (discriminator) modelInstance[discriminator] = params.constructor.modelName;
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self.resetCache(params);
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} else if (typeof params === 'function') { // acts as async getter
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|
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if (discriminator && !modelTo) {
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var modelToName = modelInstance[discriminator];
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if (typeof modelToName !== 'string') {
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throw new Error('Polymorphic model not found: `' + discriminator + '` not set');
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}
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modelToName = modelToName.toLowerCase();
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modelTo = lookupModel(modelFrom.dataSource.modelBuilder.models, modelToName);
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if (!modelTo) {
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throw new Error('Polymorphic model not found: `' + modelToName + '`');
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}
|
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}
|
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|
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var cb = params;
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if (cachedValue === undefined) {
|
||||
var query = {where: {}};
|
||||
|
|
@ -987,24 +1099,40 @@ RelationDefinition.hasAndBelongsToMany = function hasAndBelongsToMany(modelFrom,
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if (params.model) {
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modelTo = params.model;
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} else {
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modelTo = lookupModel(models, i8n.singularize(modelTo)) ||
|
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modelTo;
|
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modelTo = lookupModel(models, i8n.singularize(modelTo)) || modelTo;
|
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}
|
||||
if (typeof modelTo === 'string') {
|
||||
throw new Error('Could not find "' + modelTo + '" relation for ' + modelFrom.modelName);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
if (!params.through) {
|
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if (params.polymorphic) throw new Error('Polymorphic relations need a through model');
|
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var name1 = modelFrom.modelName + modelTo.modelName;
|
||||
var name2 = modelTo.modelName + modelFrom.modelName;
|
||||
params.through = lookupModel(models, name1) || lookupModel(models, name2) ||
|
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modelFrom.dataSource.define(name1);
|
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}
|
||||
params.through.belongsTo(modelFrom);
|
||||
|
||||
var options = {as: params.as, through: params.through};
|
||||
options.properties = params.properties;
|
||||
options.scope = params.scope;
|
||||
|
||||
if (params.polymorphic) {
|
||||
var polymorphic = polymorphicParams(params.polymorphic);
|
||||
options.polymorphic = polymorphic; // pass through
|
||||
var accessor = params.through.prototype[polymorphic.as];
|
||||
if (typeof accessor !== 'function') { // declare once
|
||||
// use the name of the polymorphic rel, not modelTo
|
||||
params.through.belongsTo(polymorphic.as, { polymorphic: true });
|
||||
}
|
||||
} else {
|
||||
params.through.belongsTo(modelFrom);
|
||||
}
|
||||
|
||||
params.through.belongsTo(modelTo);
|
||||
|
||||
this.hasMany(modelFrom, modelTo, {as: params.as, through: params.through});
|
||||
|
||||
this.hasMany(modelFrom, modelTo, options);
|
||||
|
||||
};
|
||||
|
||||
|
|
@ -1039,6 +1167,16 @@ RelationDefinition.hasOne = function (modelFrom, modelTo, params) {
|
|||
var relationName = params.as || i8n.camelize(modelTo.modelName, true);
|
||||
|
||||
var fk = params.foreignKey || i8n.camelize(modelFrom.modelName + '_id', true);
|
||||
var discriminator;
|
||||
|
||||
if (params.polymorphic) {
|
||||
var polymorphic = polymorphicParams(params.polymorphic);
|
||||
fk = polymorphic.foreignKey;
|
||||
discriminator = polymorphic.discriminator;
|
||||
if (!params.through) {
|
||||
modelTo.dataSource.defineProperty(modelTo.modelName, discriminator, { type: 'string', index: true });
|
||||
}
|
||||
}
|
||||
|
||||
var relationDef = modelFrom.relations[relationName] = new RelationDefinition({
|
||||
name: relationName,
|
||||
|
|
@ -1046,6 +1184,7 @@ RelationDefinition.hasOne = function (modelFrom, modelTo, params) {
|
|||
modelFrom: modelFrom,
|
||||
keyFrom: pk,
|
||||
keyTo: fk,
|
||||
discriminator: discriminator,
|
||||
modelTo: modelTo,
|
||||
properties: params.properties,
|
||||
options: params.options
|
||||
|
|
|
|||
|
|
@ -3,6 +3,7 @@ var should = require('./init.js');
|
|||
|
||||
var db, Book, Chapter, Author, Reader;
|
||||
var Category, Product;
|
||||
var Picture, PictureLink;
|
||||
|
||||
describe('relations', function () {
|
||||
|
||||
|
|
@ -526,6 +527,481 @@ describe('relations', function () {
|
|||
});
|
||||
|
||||
});
|
||||
|
||||
describe('polymorphic hasOne', function () {
|
||||
before(function (done) {
|
||||
db = getSchema();
|
||||
Picture = db.define('Picture', {name: String});
|
||||
Author = db.define('Author', {name: String});
|
||||
Reader = db.define('Reader', {name: String});
|
||||
|
||||
db.automigrate(function () {
|
||||
Picture.destroyAll(function () {
|
||||
Author.destroyAll(function () {
|
||||
Reader.destroyAll(done);
|
||||
});
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
it('can be declared', function (done) {
|
||||
Author.hasOne(Picture, { as: 'avatar', polymorphic: 'imageable' });
|
||||
Reader.hasOne(Picture, { as: 'mugshot', polymorphic: 'imageable' });
|
||||
Picture.belongsTo('imageable', { polymorphic: true });
|
||||
db.automigrate(done);
|
||||
});
|
||||
|
||||
it('should create polymorphic relation - author', function (done) {
|
||||
Author.create({name: 'Author 1' }, function (err, author) {
|
||||
author.avatar.create({ name: 'Avatar' }, function (err, p) {
|
||||
should.not.exist(err);
|
||||
should.exist(p);
|
||||
p.imageableId.should.equal(author.id);
|
||||
p.imageableType.should.equal('Author');
|
||||
done();
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
it('should create polymorphic relation - reader', function (done) {
|
||||
Reader.create({name: 'Reader 1' }, function (err, reader) {
|
||||
reader.mugshot.create({ name: 'Mugshot' }, function (err, p) {
|
||||
should.not.exist(err);
|
||||
should.exist(p);
|
||||
p.imageableId.should.equal(reader.id);
|
||||
p.imageableType.should.equal('Reader');
|
||||
done();
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
it('should find polymorphic relation - author', function (done) {
|
||||
Author.findOne(function (err, author) {
|
||||
author.avatar(function (err, p) {
|
||||
should.not.exist(err);
|
||||
p.name.should.equal('Avatar');
|
||||
p.imageableId.should.equal(author.id);
|
||||
p.imageableType.should.equal('Author');
|
||||
done();
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
it('should find polymorphic relation - reader', function (done) {
|
||||
Reader.findOne(function (err, reader) {
|
||||
reader.mugshot(function (err, p) {
|
||||
should.not.exist(err);
|
||||
p.name.should.equal('Mugshot');
|
||||
p.imageableId.should.equal(reader.id);
|
||||
p.imageableType.should.equal('Reader');
|
||||
done();
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
it('should find inverse polymorphic relation - author', function (done) {
|
||||
Picture.findOne({ where: { name: 'Avatar' } }, function (err, p) {
|
||||
p.imageable(function (err, imageable) {
|
||||
should.not.exist(err);
|
||||
imageable.should.be.instanceof(Author);
|
||||
imageable.name.should.equal('Author 1');
|
||||
done();
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
it('should find inverse polymorphic relation - reader', function (done) {
|
||||
Picture.findOne({ where: { name: 'Mugshot' } }, function (err, p) {
|
||||
p.imageable(function (err, imageable) {
|
||||
should.not.exist(err);
|
||||
imageable.should.be.instanceof(Reader);
|
||||
imageable.name.should.equal('Reader 1');
|
||||
done();
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
});
|
||||
|
||||
describe('polymorphic hasMany', function () {
|
||||
before(function (done) {
|
||||
db = getSchema();
|
||||
Picture = db.define('Picture', {name: String});
|
||||
Author = db.define('Author', {name: String});
|
||||
Reader = db.define('Reader', {name: String});
|
||||
|
||||
db.automigrate(function () {
|
||||
Picture.destroyAll(function () {
|
||||
Author.destroyAll(function () {
|
||||
Reader.destroyAll(done);
|
||||
});
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
it('can be declared', function (done) {
|
||||
Author.hasMany(Picture, { polymorphic: 'imageable' });
|
||||
Reader.hasMany(Picture, { polymorphic: { // alt syntax
|
||||
as: 'imageable', foreignKey: 'imageableId',
|
||||
discriminator: 'imageableType'
|
||||
} });
|
||||
Picture.belongsTo('imageable', { polymorphic: true });
|
||||
db.automigrate(done);
|
||||
});
|
||||
|
||||
it('should create polymorphic relation - author', function (done) {
|
||||
Author.create({ name: 'Author 1' }, function (err, author) {
|
||||
author.pictures.create({ name: 'Author Pic' }, function (err, p) {
|
||||
should.not.exist(err);
|
||||
should.exist(p);
|
||||
p.imageableId.should.equal(author.id);
|
||||
p.imageableType.should.equal('Author');
|
||||
done();
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
it('should create polymorphic relation - reader', function (done) {
|
||||
Reader.create({ name: 'Reader 1' }, function (err, reader) {
|
||||
reader.pictures.create({ name: 'Reader Pic' }, function (err, p) {
|
||||
should.not.exist(err);
|
||||
should.exist(p);
|
||||
p.imageableId.should.equal(reader.id);
|
||||
p.imageableType.should.equal('Reader');
|
||||
done();
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
it('should find polymorphic items - author', function (done) {
|
||||
Author.findOne(function (err, author) {
|
||||
author.pictures(function (err, pics) {
|
||||
should.not.exist(err);
|
||||
pics.should.have.length(1);
|
||||
pics[0].name.should.equal('Author Pic');
|
||||
done();
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
it('should find polymorphic items - reader', function (done) {
|
||||
Reader.findOne(function (err, reader) {
|
||||
reader.pictures(function (err, pics) {
|
||||
should.not.exist(err);
|
||||
pics.should.have.length(1);
|
||||
pics[0].name.should.equal('Reader Pic');
|
||||
done();
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
it('should find the inverse of polymorphic relation - author', function (done) {
|
||||
Picture.findOne({ where: { name: 'Author Pic' } }, function (err, p) {
|
||||
should.not.exist(err);
|
||||
p.imageableType.should.equal('Author');
|
||||
p.imageable(function(err, imageable) {
|
||||
should.not.exist(err);
|
||||
imageable.should.be.instanceof(Author);
|
||||
imageable.name.should.equal('Author 1');
|
||||
done();
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
it('should find the inverse of polymorphic relation - reader', function (done) {
|
||||
Picture.findOne({ where: { name: 'Reader Pic' } }, function (err, p) {
|
||||
should.not.exist(err);
|
||||
p.imageableType.should.equal('Reader');
|
||||
p.imageable(function(err, imageable) {
|
||||
should.not.exist(err);
|
||||
imageable.should.be.instanceof(Reader);
|
||||
imageable.name.should.equal('Reader 1');
|
||||
done();
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
it('should include the inverse of polymorphic relation', function (done) {
|
||||
Picture.find({ include: 'imageable' }, function (err, pics) {
|
||||
should.not.exist(err);
|
||||
pics.should.have.length(2);
|
||||
pics[0].name.should.equal('Author Pic');
|
||||
pics[0].imageable().name.should.equal('Author 1');
|
||||
pics[1].name.should.equal('Reader Pic');
|
||||
pics[1].imageable().name.should.equal('Reader 1');
|
||||
done();
|
||||
});
|
||||
});
|
||||
|
||||
it('should assign a polymorphic relation', function(done) {
|
||||
Author.create({ name: 'Author 2' }, function(err, author) {
|
||||
var p = new Picture({ name: 'Sample' });
|
||||
p.imageable(author); // assign
|
||||
p.imageableId.should.equal(author.id);
|
||||
p.imageableType.should.equal('Author');
|
||||
p.save(done);
|
||||
});
|
||||
});
|
||||
|
||||
it('should find polymorphic items - author', function (done) {
|
||||
Author.findOne({ where: { name: 'Author 2' } }, function (err, author) {
|
||||
author.pictures(function (err, pics) {
|
||||
should.not.exist(err);
|
||||
pics.should.have.length(1);
|
||||
pics[0].name.should.equal('Sample');
|
||||
done();
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
it('should find the inverse of polymorphic relation - author', function (done) {
|
||||
Picture.findOne({ where: { name: 'Sample' } }, function (err, p) {
|
||||
should.not.exist(err);
|
||||
p.imageableType.should.equal('Author');
|
||||
p.imageable(function(err, imageable) {
|
||||
should.not.exist(err);
|
||||
imageable.should.be.instanceof(Author);
|
||||
imageable.name.should.equal('Author 2');
|
||||
done();
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
});
|
||||
|
||||
describe('polymorphic hasAndBelongsToMany through', function () {
|
||||
before(function (done) {
|
||||
db = getSchema();
|
||||
Picture = db.define('Picture', {name: String});
|
||||
Author = db.define('Author', {name: String});
|
||||
Reader = db.define('Reader', {name: String});
|
||||
PictureLink = db.define('PictureLink', {});
|
||||
|
||||
db.automigrate(function () {
|
||||
Picture.destroyAll(function () {
|
||||
PictureLink.destroyAll(function () {
|
||||
Author.destroyAll(function () {
|
||||
Reader.destroyAll(done);
|
||||
});
|
||||
});
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
it('can be declared', function (done) {
|
||||
Author.hasAndBelongsToMany(Picture, { through: PictureLink, polymorphic: 'imageable' });
|
||||
Reader.hasAndBelongsToMany(Picture, { through: PictureLink, polymorphic: 'imageable' });
|
||||
// Optionally, define inverse relations:
|
||||
Picture.hasMany(Author, { through: PictureLink, polymorphic: 'imageable', invert: true });
|
||||
Picture.hasMany(Reader, { through: PictureLink, polymorphic: 'imageable', invert: true });
|
||||
db.automigrate(done);
|
||||
});
|
||||
|
||||
var author, reader, pictures = [];
|
||||
it('should create polymorphic relation - author', function (done) {
|
||||
Author.create({ name: 'Author 1' }, function (err, a) {
|
||||
should.not.exist(err);
|
||||
author = a;
|
||||
author.pictures.create({ name: 'Author Pic 1' }, function (err, p) {
|
||||
should.not.exist(err);
|
||||
pictures.push(p);
|
||||
author.pictures.create({ name: 'Author Pic 2' }, function (err, p) {
|
||||
should.not.exist(err);
|
||||
pictures.push(p);
|
||||
done();
|
||||
});
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
it('should create polymorphic relation - reader', function (done) {
|
||||
Reader.create({ name: 'Reader 1' }, function (err, r) {
|
||||
should.not.exist(err);
|
||||
reader = r;
|
||||
reader.pictures.create({ name: 'Reader Pic 1' }, function (err, p) {
|
||||
should.not.exist(err);
|
||||
pictures.push(p);
|
||||
done();
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
it('should create polymorphic through model', function (done) {
|
||||
PictureLink.findOne(function(err, link) {
|
||||
should.not.exist(err);
|
||||
link.pictureId.should.eql(pictures[0].id); // eql for mongo ObjectId
|
||||
link.imageableId.should.eql(author.id);
|
||||
link.imageableType.should.equal('Author');
|
||||
link.imageable(function(err, imageable) {
|
||||
imageable.should.be.instanceof(Author);
|
||||
imageable.id.should.eql(author.id);
|
||||
done();
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
it('should get polymorphic relation through model - author', function (done) {
|
||||
Author.findById(author.id, function(err, author) {
|
||||
should.not.exist(err);
|
||||
author.name.should.equal('Author 1');
|
||||
author.pictures(function(err, pics) {
|
||||
should.not.exist(err);
|
||||
pics.should.have.length(2);
|
||||
pics[0].name.should.equal('Author Pic 1');
|
||||
pics[1].name.should.equal('Author Pic 2');
|
||||
done();
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
it('should get polymorphic relation through model - reader', function (done) {
|
||||
Reader.findById(reader.id, function(err, reader) {
|
||||
should.not.exist(err);
|
||||
reader.name.should.equal('Reader 1');
|
||||
reader.pictures(function(err, pics) {
|
||||
should.not.exist(err);
|
||||
pics.should.have.length(1);
|
||||
pics[0].name.should.equal('Reader Pic 1');
|
||||
done();
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
it('should include polymorphic items', function (done) {
|
||||
Author.find({ include: 'pictures' }, function(err, authors) {
|
||||
authors.should.have.length(1);
|
||||
authors[0].pictures(function(err, pics) {
|
||||
pics.should.have.length(2);
|
||||
pics[0].name.should.equal('Author Pic 1');
|
||||
pics[1].name.should.equal('Author Pic 2');
|
||||
done();
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
var anotherPicture;
|
||||
it('should add to a polymorphic relation - author', function (done) {
|
||||
Author.findById(author.id, function(err, author) {
|
||||
Picture.create({name: 'Example' }, function(err, p) {
|
||||
should.not.exist(err);
|
||||
pictures.push(p);
|
||||
anotherPicture = p;
|
||||
author.pictures.add(p, function(err, link) {
|
||||
link.should.be.instanceof(PictureLink);
|
||||
link.pictureId.should.eql(p.id);
|
||||
link.imageableId.should.eql(author.id);
|
||||
link.imageableType.should.equal('Author');
|
||||
done();
|
||||
});
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
it('should create polymorphic through model', function (done) {
|
||||
PictureLink.findOne({ where: { pictureId: anotherPicture.id, imageableType: 'Author' } }, function(err, link) {
|
||||
should.not.exist(err);
|
||||
link.pictureId.should.eql(anotherPicture.id);
|
||||
link.imageableId.should.eql(author.id);
|
||||
link.imageableType.should.equal('Author');
|
||||
done();
|
||||
});
|
||||
});
|
||||
|
||||
var anotherAuthor, anotherReader;
|
||||
it('should add to a polymorphic relation - author', function (done) {
|
||||
Author.create({ name: 'Author 2' }, function (err, author) {
|
||||
should.not.exist(err);
|
||||
anotherAuthor = author;
|
||||
author.pictures.add(anotherPicture.id, function (err, p) {
|
||||
should.not.exist(err);
|
||||
done();
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
it('should add to a polymorphic relation - author', function (done) {
|
||||
Reader.create({name: 'Reader 2' }, function (err, reader) {
|
||||
should.not.exist(err);
|
||||
anotherReader = reader;
|
||||
reader.pictures.add(anotherPicture.id, function (err, p) {
|
||||
should.not.exist(err);
|
||||
done();
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
it('should get the inverse polymorphic relation - author', function (done) {
|
||||
Picture.findById(anotherPicture.id, function(err, p) {
|
||||
p.authors(function(err, authors) {
|
||||
authors.should.have.length(2);
|
||||
authors[0].name.should.equal('Author 1');
|
||||
authors[1].name.should.equal('Author 2');
|
||||
done();
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
it('should get the inverse polymorphic relation - reader', function (done) {
|
||||
Picture.findById(anotherPicture.id, function(err, p) {
|
||||
p.readers(function(err, readers) {
|
||||
readers.should.have.length(1);
|
||||
readers[0].name.should.equal('Reader 2');
|
||||
done();
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
it('should find polymorphic items - author', function (done) {
|
||||
Author.findById(author.id, function(err, author) {
|
||||
author.pictures(function(err, pics) {
|
||||
pics.should.have.length(3);
|
||||
pics[0].name.should.equal('Author Pic 1');
|
||||
pics[1].name.should.equal('Author Pic 2');
|
||||
pics[2].name.should.equal('Example');
|
||||
done();
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
it('should check if polymorphic relation exists - author', function (done) {
|
||||
Author.findById(author.id, function(err, author) {
|
||||
author.pictures.exists(anotherPicture.id, function(err, exists) {
|
||||
exists.should.be.true;
|
||||
done();
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
it('should remove from a polymorphic relation - author', function (done) {
|
||||
Author.findById(author.id, function(err, author) {
|
||||
author.pictures.remove(anotherPicture.id, function(err) {
|
||||
should.not.exist(err);
|
||||
done();
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
it('should find polymorphic items - author', function (done) {
|
||||
Author.findById(author.id, function(err, author) {
|
||||
author.pictures(function(err, pics) {
|
||||
pics.should.have.length(2);
|
||||
pics[0].name.should.equal('Author Pic 1');
|
||||
pics[1].name.should.equal('Author Pic 2');
|
||||
done();
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
it('should check if polymorphic relation exists - author', function (done) {
|
||||
Author.findById(author.id, function(err, author) {
|
||||
author.pictures.exists(7, function(err, exists) {
|
||||
exists.should.be.false;
|
||||
done();
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
});
|
||||
|
||||
describe('belongsTo', function () {
|
||||
var List, Item, Fear, Mind;
|
||||
|
|
@ -596,10 +1072,12 @@ describe('relations', function () {
|
|||
});
|
||||
db.automigrate(done);
|
||||
});
|
||||
|
||||
|
||||
var personCreated;
|
||||
it('should create record on scope', function (done) {
|
||||
var p = new Passport({ name: 'Passport', notes: 'Some notes...' });
|
||||
p.person.create({ id: 3, name: 'Fred', age: 36 }, function(err, person) {
|
||||
p.person.create({name: 'Fred', age: 36 }, function(err, person) {
|
||||
personCreated = person;
|
||||
p.personId.should.equal(person.id);
|
||||
p.save(function (err, p) {
|
||||
person.name.should.equal('Fred');
|
||||
|
|
@ -611,7 +1089,7 @@ describe('relations', function () {
|
|||
|
||||
it('should find record on scope', function (done) {
|
||||
Passport.findOne(function (err, p) {
|
||||
p.personId.should.equal(3);
|
||||
p.personId.should.equal(personCreated.id);
|
||||
p.person(function(err, person) {
|
||||
person.name.should.equal('Fred');
|
||||
person.should.not.have.property('age');
|
||||
|
|
|
|||
Loading…
Reference in New Issue