has-many-single-linked.js
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var Utils = require('./../utils')
module.exports = (function() {
var HasManySingleLinked = function(definition, instance) {
this.__factory = definition
this.instance = instance
}
HasManySingleLinked.prototype.injectGetter = function(options) {
var where = {}
options = options || {}
where[this.__factory.identifier] = this.instance.id
options.where = options.where ? Utils._.extend(options.where, where) : where
return this.__factory.target.findAll(options)
}
HasManySingleLinked.prototype.injectSetter = function(emitter, oldAssociations, newAssociations) {
var self = this
, chainer = new Utils.QueryChainer()
, obsoleteAssociations = oldAssociations.filter(function (old) {
return !Utils._.find(newAssociations, function (obj) {
return obj.id === old.id
})
})
, unassociatedObjects = newAssociations.filter(function (obj) {
return !Utils._.find(oldAssociations, function (old) {
return obj.id === old.id
})
})
, update
if (obsoleteAssociations.length > 0) {
// clear the old associations
var obsoleteIds = obsoleteAssociations.map(function(associatedObject) { return associatedObject.id })
update = {}
update[self.__factory.identifier] = null
chainer.add(this.__factory.target.update(update, { id: obsoleteIds }))
}
if (unassociatedObjects.length > 0) {
// set the new associations
var unassociatedIds = unassociatedObjects.map(function(associatedObject) { return associatedObject.id })
update = {}
update[self.__factory.identifier] = self.instance.id
chainer.add(this.__factory.target.update(update, { id: unassociatedIds }))
}
chainer
.run()
.success(function() { emitter.emit('success', newAssociations) })
.error(function(err) { emitter.emit('error', err) })
.on('sql', function(sql) { emitter.emit('sql', sql) })
}
HasManySingleLinked.prototype.injectAdder = function(emitterProxy, newAssociation) {
newAssociation[this.__factory.identifier] = this.instance.id
newAssociation.save()
.success(function() { emitterProxy.emit('success', newAssociation) })
.error(function(err) { emitterProxy.emit('error', err) })
.on('sql', function(sql) { emitterProxy.emit('sql', sql) })
}
return HasManySingleLinked
})()