318 lines
8.2 KiB
JavaScript
318 lines
8.2 KiB
JavaScript
/*!
|
|
* Module Dependencies.
|
|
*/
|
|
var Model = require('./model');
|
|
|
|
/**
|
|
* Extends Model with basic query and CRUD support.
|
|
*
|
|
* @class DataModel
|
|
* @param {Object} data
|
|
*/
|
|
|
|
var DataModel = module.exports = Model.extend('DataModel');
|
|
|
|
/*!
|
|
* Configure the remoting attributes for a given function
|
|
* @param {Function} fn The function
|
|
* @param {Object} options The options
|
|
* @private
|
|
*/
|
|
|
|
function setRemoting(fn, options) {
|
|
options = options || {};
|
|
for (var opt in options) {
|
|
if (options.hasOwnProperty(opt)) {
|
|
fn[opt] = options[opt];
|
|
}
|
|
}
|
|
fn.shared = true;
|
|
}
|
|
|
|
/*!
|
|
* Convert null callbacks to 404 error objects.
|
|
* @param {HttpContext} ctx
|
|
* @param {Function} cb
|
|
*/
|
|
|
|
function convertNullToNotFoundError(ctx, cb) {
|
|
if (ctx.result !== null) return cb();
|
|
|
|
var modelName = ctx.method.sharedClass.name;
|
|
var id = ctx.getArgByName('id');
|
|
var msg = 'Unkown "' + modelName + '" id "' + id + '".';
|
|
var error = new Error(msg);
|
|
error.statusCode = error.status = 404;
|
|
cb(error);
|
|
}
|
|
|
|
/**
|
|
* Create new instance of Model class, saved in database
|
|
*
|
|
* @param data [optional]
|
|
* @param callback(err, obj)
|
|
* callback called with arguments:
|
|
*
|
|
* - err (null or Error)
|
|
* - instance (null or Model)
|
|
*/
|
|
|
|
DataModel.create = function (data, callback) {
|
|
|
|
};
|
|
|
|
setRemoting(DataModel.create, {
|
|
description: 'Create a new instance of the model and persist it into the data source',
|
|
accepts: {arg: 'data', type: 'object', description: 'Model instance data', http: {source: 'body'}},
|
|
returns: {arg: 'data', type: 'object', root: true},
|
|
http: {verb: 'post', path: '/'}
|
|
});
|
|
|
|
/**
|
|
* Update or insert a model instance
|
|
* @param {Object} data The model instance data
|
|
* @param {Function} [callback] The callback function
|
|
*/
|
|
|
|
DataModel.upsert = DataModel.updateOrCreate = function upsert(data, callback) {
|
|
|
|
};
|
|
|
|
// upsert ~ remoting attributes
|
|
setRemoting(DataModel.upsert, {
|
|
description: 'Update an existing model instance or insert a new one into the data source',
|
|
accepts: {arg: 'data', type: 'object', description: 'Model instance data', http: {source: 'body'}},
|
|
returns: {arg: 'data', type: 'object', root: true},
|
|
http: {verb: 'put', path: '/'}
|
|
});
|
|
|
|
/**
|
|
* Find one record, same as `all`, limited by 1 and return object, not collection,
|
|
* if not found, create using data provided as second argument
|
|
*
|
|
* @param {Object} query - search conditions: {where: {test: 'me'}}.
|
|
* @param {Object} data - object to create.
|
|
* @param {Function} cb - callback called with (err, instance)
|
|
*/
|
|
|
|
DataModel.findOrCreate = function findOrCreate(query, data, callback) {
|
|
|
|
};
|
|
|
|
/**
|
|
* Check whether a model instance exists in database
|
|
*
|
|
* @param {id} id - identifier of object (primary key value)
|
|
* @param {Function} cb - callbacl called with (err, exists: Bool)
|
|
*/
|
|
|
|
DataModel.exists = function exists(id, cb) {
|
|
|
|
};
|
|
|
|
// exists ~ remoting attributes
|
|
setRemoting(DataModel.exists, {
|
|
description: 'Check whether a model instance exists in the data source',
|
|
accepts: {arg: 'id', type: 'any', description: 'Model id', required: true},
|
|
returns: {arg: 'exists', type: 'any'},
|
|
http: {verb: 'get', path: '/:id/exists'}
|
|
});
|
|
|
|
/**
|
|
* Find object by id
|
|
*
|
|
* @param {*} id - primary key value
|
|
* @param {Function} cb - callback called with (err, instance)
|
|
*/
|
|
|
|
DataModel.findById = function find(id, cb) {
|
|
|
|
};
|
|
|
|
// find ~ remoting attributes
|
|
setRemoting(DataModel.findById, {
|
|
description: 'Find a model instance by id from the data source',
|
|
accepts: {arg: 'id', type: 'any', description: 'Model id', required: true},
|
|
returns: {arg: 'data', type: 'any', root: true},
|
|
http: {verb: 'get', path: '/:id'},
|
|
rest: {after: convertNullToNotFoundError}
|
|
});
|
|
|
|
/**
|
|
* Find all instances of Model, matched by query
|
|
* make sure you have marked as `index: true` fields for filter or sort
|
|
*
|
|
* @param {Object} params (optional)
|
|
*
|
|
* - where: Object `{ key: val, key2: {gt: 'val2'}}`
|
|
* - include: String, Object or Array. See DataModel.include documentation.
|
|
* - order: String
|
|
* - limit: Number
|
|
* - skip: Number
|
|
*
|
|
* @param {Function} callback (required) called with arguments:
|
|
*
|
|
* - err (null or Error)
|
|
* - Array of instances
|
|
*/
|
|
|
|
DataModel.find = function find(params, cb) {
|
|
|
|
};
|
|
|
|
// all ~ remoting attributes
|
|
setRemoting(DataModel.find, {
|
|
description: 'Find all instances of the model matched by filter from the data source',
|
|
accepts: {arg: 'filter', type: 'object', description: 'Filter defining fields, where, orderBy, offset, and limit'},
|
|
returns: {arg: 'data', type: 'array', root: true},
|
|
http: {verb: 'get', path: '/'}
|
|
});
|
|
|
|
/**
|
|
* Find one record, same as `all`, limited by 1 and return object, not collection
|
|
*
|
|
* @param {Object} params - search conditions: {where: {test: 'me'}}
|
|
* @param {Function} cb - callback called with (err, instance)
|
|
*/
|
|
|
|
DataModel.findOne = function findOne(params, cb) {
|
|
|
|
};
|
|
|
|
setRemoting(DataModel.findOne, {
|
|
description: 'Find first instance of the model matched by filter from the data source',
|
|
accepts: {arg: 'filter', type: 'object', description: 'Filter defining fields, where, orderBy, offset, and limit'},
|
|
returns: {arg: 'data', type: 'object', root: true},
|
|
http: {verb: 'get', path: '/findOne'}
|
|
});
|
|
|
|
/**
|
|
* Destroy all matching records
|
|
* @param {Object} [where] An object that defines the criteria
|
|
* @param {Function} [cb] - callback called with (err)
|
|
*/
|
|
|
|
DataModel.remove =
|
|
DataModel.deleteAll =
|
|
DataModel.destroyAll = function destroyAll(where, cb) {
|
|
|
|
};
|
|
|
|
/**
|
|
* Destroy a record by id
|
|
* @param {*} id The id value
|
|
* @param {Function} cb - callback called with (err)
|
|
*/
|
|
|
|
DataModel.removeById =
|
|
DataModel.deleteById =
|
|
DataModel.destroyById = function deleteById(id, cb) {
|
|
|
|
};
|
|
|
|
// deleteById ~ remoting attributes
|
|
setRemoting(DataModel.deleteById, {
|
|
description: 'Delete a model instance by id from the data source',
|
|
accepts: {arg: 'id', type: 'any', description: 'Model id', required: true},
|
|
http: {verb: 'del', path: '/:id'}
|
|
});
|
|
|
|
/**
|
|
* Return count of matched records
|
|
*
|
|
* @param {Object} where - search conditions (optional)
|
|
* @param {Function} cb - callback, called with (err, count)
|
|
*/
|
|
|
|
DataModel.count = function (where, cb) {
|
|
|
|
};
|
|
|
|
// count ~ remoting attributes
|
|
setRemoting(DataModel.count, {
|
|
description: 'Count instances of the model matched by where from the data source',
|
|
accepts: {arg: 'where', type: 'object', description: 'Criteria to match model instances'},
|
|
returns: {arg: 'count', type: 'number'},
|
|
http: {verb: 'get', path: '/count'}
|
|
});
|
|
|
|
/**
|
|
* Save instance. When instance haven't id, create method called instead.
|
|
* Triggers: validate, save, update | create
|
|
* @param options {validate: true, throws: false} [optional]
|
|
* @param callback(err, obj)
|
|
*/
|
|
|
|
DataModel.prototype.save = function (options, callback) {
|
|
|
|
};
|
|
|
|
|
|
/**
|
|
* Determine if the data model is new.
|
|
* @returns {Boolean}
|
|
*/
|
|
|
|
DataModel.prototype.isNewRecord = function () {
|
|
|
|
};
|
|
|
|
/**
|
|
* Delete object from persistence
|
|
*
|
|
* @triggers `destroy` hook (async) before and after destroying object
|
|
*/
|
|
|
|
DataModel.prototype.remove =
|
|
DataModel.prototype.delete =
|
|
DataModel.prototype.destroy = function (cb) {
|
|
|
|
};
|
|
|
|
/**
|
|
* Update single attribute
|
|
*
|
|
* equals to `updateAttributes({name: value}, cb)
|
|
*
|
|
* @param {String} name - name of property
|
|
* @param {Mixed} value - value of property
|
|
* @param {Function} callback - callback called with (err, instance)
|
|
*/
|
|
|
|
DataModel.prototype.updateAttribute = function updateAttribute(name, value, callback) {
|
|
|
|
};
|
|
|
|
/**
|
|
* Update set of attributes
|
|
*
|
|
* this method performs validation before updating
|
|
*
|
|
* @trigger `validation`, `save` and `update` hooks
|
|
* @param {Object} data - data to update
|
|
* @param {Function} callback - callback called with (err, instance)
|
|
*/
|
|
|
|
DataModel.prototype.updateAttributes = function updateAttributes(data, cb) {
|
|
|
|
};
|
|
|
|
// updateAttributes ~ remoting attributes
|
|
setRemoting(DataModel.prototype.updateAttributes, {
|
|
description: 'Update attributes for a model instance and persist it into the data source',
|
|
accepts: {arg: 'data', type: 'object', http: {source: 'body'}, description: 'An object of model property name/value pairs'},
|
|
returns: {arg: 'data', type: 'object', root: true},
|
|
http: {verb: 'put', path: '/'}
|
|
});
|
|
|
|
/**
|
|
* Reload object from persistence
|
|
*
|
|
* @requires `id` member of `object` to be able to call `find`
|
|
* @param {Function} callback - called with (err, instance) arguments
|
|
*/
|
|
|
|
DataModel.prototype.reload = function reload(callback) {
|
|
|
|
};
|