has-many-single-linked.js
4.62 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
var Utils = require('./../utils')
, Transaction = require('./../transaction')
module.exports = (function() {
var HasManySingleLinked = function(association, instance) {
this.__factory = association
this.association = association
this.instance = instance
this.target = this.association.target
this.source = this.association.source
}
HasManySingleLinked.prototype.injectGetter = function(options) {
options = options || {}
options.where = new Utils.and([
new Utils.where(
this.target.rawAttributes[this.association.identifier],
this.instance[this.source.primaryKeyAttribute])
,
options.where
])
return this.association.target.all(options)
}
HasManySingleLinked.prototype.injectSetter = function(emitter, oldAssociations, newAssociations, defaultAttributes) {
var self = this
, associationKeys = Object.keys((oldAssociations[0] || newAssociations[0] || {Model: {primaryKeys: {}}}).Model.primaryKeys || {})
, associationKey = (associationKeys.length === 1) ? associationKeys[0] : 'id'
, chainer = new Utils.QueryChainer()
, options = {}
, obsoleteAssociations = oldAssociations.filter(function (old) {
return !Utils._.find(newAssociations, function (obj) {
return obj[associationKey] === old[associationKey]
})
})
, unassociatedObjects = newAssociations.filter(function (obj) {
return !Utils._.find(oldAssociations, function (old) {
return obj[associationKey] === old[associationKey]
})
})
, update
if ((defaultAttributes || {}).transaction instanceof Transaction) {
options.transaction = defaultAttributes.transaction
delete defaultAttributes.transaction
}
if (obsoleteAssociations.length > 0) {
// clear the old associations
var obsoleteIds = obsoleteAssociations.map(function(associatedObject) {
associatedObject[self.__factory.identifier] = (newAssociations.length < 1 ? null : self.instance.id)
return associatedObject[associationKey]
})
update = {}
update[self.__factory.identifier] = null
var primaryKeys = Object.keys(this.__factory.target.primaryKeys)
, primaryKey = primaryKeys.length === 1 ? primaryKeys[0] : 'id'
, updateWhere = {}
updateWhere[primaryKey] = obsoleteIds
chainer.add(this.__factory.target.update(
update,
updateWhere,
Utils._.extend(options, { allowNull: [self.__factory.identifier] })
))
}
if (unassociatedObjects.length > 0) {
// For the self.instance
var pkeys = Object.keys(self.instance.Model.primaryKeys)
, pkey = pkeys.length === 1 ? pkeys[0] : 'id'
// For chainer
, primaryKeys = Object.keys(this.__factory.target.primaryKeys)
, primaryKey = primaryKeys.length === 1 ? primaryKeys[0] : 'id'
, updateWhere = {}
// set the new associations
var unassociatedIds = unassociatedObjects.map(function(associatedObject) {
associatedObject[self.__factory.identifier] = self.instance[pkey] || self.instance.id
return associatedObject[associationKey]
})
update = {}
update[self.__factory.identifier] = (newAssociations.length < 1 ? null : self.instance[pkey] || self.instance.id)
updateWhere[primaryKey] = unassociatedIds
chainer.add(this.__factory.target.update(
update,
updateWhere,
Utils._.extend(options, { allowNull: [self.__factory.identifier] })
))
}
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, additionalAttributes) {
var primaryKeys = Object.keys(this.instance.Model.primaryKeys)
, primaryKey = primaryKeys.length === 1 ? primaryKeys[0] : 'id'
, options = {}
if ((additionalAttributes || {}).transaction instanceof Transaction) {
options.transaction = additionalAttributes.transaction
delete additionalAttributes.transaction
}
newAssociation[this.__factory.identifier] = this.instance[primaryKey]
newAssociation.save(options)
.success(function() { emitterProxy.emit('success', newAssociation) })
.error(function(err) { emitterProxy.emit('error', err) })
.on('sql', function(sql) { emitterProxy.emit('sql', sql) })
}
return HasManySingleLinked
})()