Show relationship clear

README.md

Ember Twiddle Demo: Mirage with Ember Twiddle

Demo

If I have my first store.query('my-model', {}) has the backend return {id: 1 , name: 'Eric', foo: 'bar'}. The store will have that exactly.

But in my next call (say some sort of polling goes on) the backend returns {id: 1, name: 'Erik' } (where foo is gone).

The store (the data returned by query, and peeks of that record)  will have {id: 1, name: 'Erik', foo: 'bar'}, rather then what I would've expected {id: 1, name: 'Erik'}.

This twiddle presents a solution

adapters.application.js

import Ember from 'ember'
const {$, deprecate, get, inject} = Ember
import DS from 'ember-data'
const {RESTAdapter} = DS

export default RESTAdapter.extend({
  coalesceFindRequests: true
})

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({

  actions: {
   select () {
    this.send('reloadModel')
 
   }
  }
});

mirage.config.js

import Collection from 'ember-cli-mirage/orm/collection';
let count = 0
export default function() {
  window.server = this;

  this.get('/myModels', function (schema, request) {
    let ex = {name: 'Jane Eyre ' + count}
    
    let relationships = {
     	foobars: {data: [{type: 'my-mod', id:12}]}
    }
  
    if (count === 0){ 
      ex.foo = 'bar'
    }
    
    if (count === 5) {
      relationships = {
     	foobars: {data: []}
    }
    }
    ++count
    var posts = [{
      id: 1,
      attributes: ex,
      type: 'my-model',
			
    }, {
      id: 2,
      attributes:  {name: 'Emily Dickinson'},
      relationships,
      type: 'my-model'

    }];
    return {data: posts, included: [
      {id: 12, type: 'my-mod', attributes: {name: 'Eric'}}
    ]
        };
  });
};

models.my-mod\.js

import Model from 'ember-data/model';
import attr from 'ember-data/attr';

export default Model.extend({
    name: attr('string')
})

models.my-model.js

import Model from 'ember-data/model';
import attr from 'ember-data/attr';
import { belongsTo, hasMany } from 'ember-data/relationships';

export default Model.extend({
  name: attr('string'),
  foo: attr(),
  foobars: hasMany('my-mod', {async: false})
});

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  model() {
    return this.store.query('my-model', {});
  },
    actions: {
    reloadModel: function() {
      this.refresh()
    }
  }
});

serializers.my-mod\.js

import DS from 'ember-data'
const {JSONAPISerializer} = DS
import { assert, deprecate, runInDebug, warn } from 'ember-data/-private/debug';
import Ember from 'ember'
export default JSONAPISerializer.extend({

})

serializers.my-model.js

import DS from 'ember-data'
const {JSONAPISerializer} = DS
import { assert, deprecate, runInDebug, warn } from 'ember-data/-private/debug';
import Ember from 'ember'
export default JSONAPISerializer.extend({
  extractAttributes(modelClass, resourceHash) {
    // taken from https://github.com/emberjs/data/blob/v2.12.2/addon/serializers/json-api.js#L286
    // Removed if around undefined
    var attributes = {};

    if (resourceHash.attributes) {
      const partiallyPopulated = Ember.getWithDefault(resourceHash, 'meta.partiallyPopulated', false)
 
      modelClass.eachAttribute((key) => {
        let attributeKey = this.keyForAttribute(key, 'deserialize');
        if (resourceHash.attributes[attributeKey] !== undefined || !partiallyPopulated) {
          attributes[key] = resourceHash.attributes[attributeKey];
        }
        runInDebug(() => {
          if (resourceHash.attributes[attributeKey] === undefined && resourceHash.attributes[key] !== undefined) {
            assert(`Your payload for '${modelClass.modelName}' contains '${key}', but your serializer is setup to look for '${attributeKey}'. This is most likely because Ember Data's JSON API serializer dasherizes attribute keys by default. You should subclass JSONAPISerializer and implement 'keyForAttribute(key) { return key; }' to prevent Ember Data from customizing your attribute keys.`, false);
          }
        });
      });
    }

    return attributes;
  }
})

templates.application.hbs

<header>
  <h1>Mirage</h1>
</header>

<ul>
{{#each model as |post|}}
<li>{{post.name}} and {{post.foo}} with relationship {{post.foobars.firstObject.name}}</li>
{{/each}}
</ul>

<button {{action "select"}}>✓</button>

twiddle.json

{
  "version": "0.11.3",
  "ENV": {
    "ember-cli-mirage": {
      "enabled": true
    }
  },
  "EmberENV": {},
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.12.0",
    "ember-template-compiler": "2.12.0"
  },
  "addons": {
    "ember-data": "2.12.2",
    "ember-cli-mirage": "0.2.4"
  }
}