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Ember Data | has-many Batch Create
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| import DS from 'ember-data'; | |
| import Ember from 'ember'; | |
| const { copy } = Ember; | |
| const { Promise } = Ember.RSVP; | |
| export default DS.JSONAPIAdapter.extend({ | |
| // just stubbing this for twiddle | |
| ajax(url, params) { | |
| let id = 1; | |
| return Promise.resolve({ | |
| data: copy(params.data.data, true).map((r) => { | |
| // emulate an API response containing IDs | |
| r.id = `student-${id++}`; | |
| return r; | |
| }) | |
| }); | |
| }, | |
| batchCreateForHasMany(store, modelName, relationshipName, records, parentRecord) { | |
| let modelClass = store.modelFor(modelName); | |
| let serializer = store.serializerFor(modelName); | |
| let serialized = serializer.serializeRecordArray(store, modelClass, records); | |
| let url = this.urlForPatchHasMany(parentRecord.constructor.modelName, parentRecord.get('id'), modelName, relationshipName); | |
| // roughly, likely wrong | |
| let params = { | |
| method: 'PATCH', | |
| data: serialized | |
| }; | |
| // roughly, likely the wrong method signature | |
| return this.ajax(url, params) | |
| .then((jsonApiPayload) => { | |
| store.push(jsonApiPayload); | |
| }); | |
| }, | |
| // make this into whatever you actually need | |
| urlForPatchHasMany(parentModelName, parentId, modelName, relationshipName) { | |
| return `${parentModelName}/${parentId}/${relationshipName}/`; | |
| } | |
| }); |
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| import Ember from 'ember'; | |
| let num = 100; | |
| let clientId = 1; | |
| function letterFromNum(num) { | |
| if (num > 90) return 'A'; | |
| if (num > 80) return 'B'; | |
| if (num > 70) return 'C'; | |
| if (num > 60) return 'D'; | |
| return 'F'; | |
| } | |
| function makeGrade(store, assignment) { | |
| return store.createRecord('grade', { | |
| id: `student-${clientId++}`, | |
| letterValue: letterFromNum(num), | |
| numberValue: num -= 3, | |
| assignment | |
| }); | |
| } | |
| export default Ember.Controller.extend({ | |
| appName: 'Ember Twiddle', | |
| actions: { | |
| createGrades() { | |
| let assignment = this.get('model.assignment'); | |
| let grades = assignment.get('grades'); | |
| let store = this.get('store'); | |
| for (let i = 0; i < 25; i++) { | |
| grades.pushObject(makeGrade(store, assignment)); | |
| } | |
| num = 100; | |
| }, | |
| saveGrades() { | |
| let assignment = this.get('model.assignment'); | |
| let grades = assignment.get('grades'); | |
| let store = this.get('store'); | |
| let adapter = store.adapterFor('assignment'); | |
| // what would be a more generic case | |
| // adapter.batchCreate(store, grades.toArray()); | |
| // better for the hasMany case | |
| adapter.batchCreateForHasMany(store, 'grade', 'grades', grades.toArray(), assignment); | |
| } | |
| } | |
| }); |
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| import Model from 'ember-data/model'; | |
| import attr from 'ember-data/attr'; | |
| import { hasMany } from 'ember-data/relationships'; | |
| export default Model.extend({ | |
| title: attr(), | |
| grades: hasMany('grade', { inverse: 'assignment', async: false }) | |
| }); |
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| import Model from 'ember-data/model'; | |
| import attr from 'ember-data/attr'; | |
| import { belongsTo } from 'ember-data/relationships'; | |
| export default Model.extend({ | |
| letterValue: attr(), | |
| numberValue: attr(), | |
| assignment: belongsTo('assignment', { inverse: 'grades', async: false }) | |
| }); |
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| import Ember from 'ember'; | |
| export default Ember.Route.extend({ | |
| model() { | |
| let assignment = this.get('store').push({ | |
| data: { | |
| id: '1', | |
| type: 'assignment', | |
| attributes: { | |
| title: 'Assignment 1' | |
| } | |
| } | |
| }); | |
| return { assignment }; | |
| } | |
| }); |
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| import Ember from 'ember'; | |
| import DS from 'ember-data'; | |
| export default DS.JSONAPISerializer.extend({ | |
| payloadKeyFromModelName(modelName) { | |
| return modelName; | |
| }, | |
| serializeRecordArray(store, modelClass, records) { | |
| let data = records.map(record => { | |
| return this.serialize(record._createSnapshot()).data; | |
| }); | |
| return { data }; | |
| } | |
| }); |
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| { | |
| "version": "0.13.1", | |
| "EmberENV": { | |
| "FEATURES": {} | |
| }, | |
| "options": { | |
| "use_pods": false, | |
| "enable-testing": false | |
| }, | |
| "dependencies": { | |
| "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js", | |
| "ember": "2.16.2", | |
| "ember-template-compiler": "2.16.2", | |
| "ember-testing": "2.16.2" | |
| }, | |
| "addons": { | |
| "ember-data": "2.16.3" | |
| } | |
| } |
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