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loopback-datasource-juggler
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Promote the included relations as properties

This commit is contained in:
Raymond Feng 2014-01-27 15:56:04 -08:00
parent 08fb43adb2
commit 1339250c8f
2 changed files with 41 additions and 19 deletions
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18
lib/dao.js
View File

@ -542,11 +542,21 @@ DataAccessObject.find = function find(params, cb) {
obj._initProperties(d, false, params.fields);
if (params && params.include && params.collect) {
data[i] = obj.__cachedRelations[params.collect];
} else {
data[i] = obj;
if (params && params.include) {
// Try to normalize the include
var includes = params.include;
if(typeof includes === 'string') {
includes = [includes];
} else if(typeof includes === 'object') {
includes = Object.keys(includes);
}
includes.forEach(function (inc) {
// Promote the included model as a direct property
obj.__data[inc] = obj.__cachedRelations[inc];
});
delete obj.__data.__cachedRelations;
}
data[i] = obj;
});
if (data && data.countBeforeLimit) {
data.countBeforeLimit = data.countBeforeLimit;

42
lib/include.js
View File

@ -6,6 +6,16 @@ module.exports = Inclusion;
function Inclusion() {
}
/*!
* Check if the argument is plain object
* @param {*) include The include value
* @returns {boolean}
*/
function isObject(include) {
return (typeof include === 'object') && (include !== null)
&& (include.constructor.name === 'Object');
}
/**
* Allows you to load relations of several objects and optimize numbers of requests.
*
@ -29,8 +39,8 @@ Inclusion.include = function (objects, include, cb) {
var self = this;
if (
(include.constructor.name == 'Array' && include.length == 0) ||
(include.constructor.name == 'Object' && Object.keys(include).length == 0)
!include || (Array.isArray(include) && include.length === 0) ||
(isObject(include) && Object.keys(include).length === 0)
) {
cb(null, objects);
return;
@ -61,7 +71,7 @@ Inclusion.include = function (objects, include, cb) {
if (typeof ij === 'string') {
ij = [ij];
}
if (ij.constructor.name === 'Object') {
if (isObject(ij)) {
var newIj = [];
for (var key in ij) {
var obj = {};
@ -76,12 +86,13 @@ Inclusion.include = function (objects, include, cb) {
function processIncludeItem(objs, include, keyVals, objsByKeys) {
var relations = self.relations;
if (include.constructor.name === 'Object') {
var relationName = Object.keys(include)[0];
var subInclude = include[relationName];
var relationName, subInclude;
if (isObject(include)) {
relationName = Object.keys(include)[0];
subInclude = include[relationName];
} else {
var relationName = include;
var subInclude = [];
relationName = include;
subInclude = [];
}
var relation = relations[relationName];
@ -117,15 +128,16 @@ Inclusion.include = function (objects, include, cb) {
}
}
req['where'][relation.keyTo] = {inq: inValues};
req['include'] = subInclude;
req.where[relation.keyTo] = {inq: inValues};
req.include = subInclude;
return function (cb) {
relation.modelTo.find(req, function (err, objsIncluded) {
var objectsFrom, j;
for (var i = 0; i < objsIncluded.length; i++) {
delete keysToBeProcessed[objsIncluded[i][relation.keyTo]];
var objectsFrom = objsByKeys[relation.keyFrom][objsIncluded[i][relation.keyTo]];
for (var j = 0; j < objectsFrom.length; j++) {
objectsFrom = objsByKeys[relation.keyFrom][objsIncluded[i][relation.keyTo]];
for (j = 0; j < objectsFrom.length; j++) {
if (!objectsFrom[j].__cachedRelations) {
objectsFrom[j].__cachedRelations = {};
}
@ -142,8 +154,8 @@ Inclusion.include = function (objects, include, cb) {
// No relation have been found for these keys
for (var key in keysToBeProcessed) {
var objectsFrom = objsByKeys[relation.keyFrom][key];
for (var j = 0; j < objectsFrom.length; j++) {
objectsFrom = objsByKeys[relation.keyFrom][key];
for (j = 0; j < objectsFrom.length; j++) {
if (!objectsFrom[j].__cachedRelations) {
objectsFrom[j].__cachedRelations = {};
}
@ -158,5 +170,5 @@ Inclusion.include = function (objects, include, cb) {
return null;
}
}
};