hasMany associations

[hjdivad]

I would have expected the following to work for hasMany associations:

FactoryGuy.define('province');
FactoryGuy.define('country', {
  'default': {
    provinces: {}
  }
});

Checking the implementation it looks like this feature is simply not supported. Is that right?

[hjdivad]

okay n/m i see that i'm supposed to do this with attributes whose values are functions.

[swatijadhav]

Hi @hjdivad ,

I also want to implement hasMany association, in the same way as you have specified in example.

How to achieve it? Can you please provide me an example for it?

Thanks.

[shivanibhanwal]

Hi @hjdivad
I have implemented hasMany associations as follows:

 user_with_many_address: {
    name: FactoryGuy.generate("user_name"),
    addresses: FactoryGuy.buildList('address',6)
    }

Have you implemented it same way ?

Hi @danielspaniel - could you please also suggest if this is the right approach or not?

@danielspaniel Thank you for the awesome work!

[hjdivad]

The following works for me:

Duchy = DS.extend({
  kingdom: belongsTo('kingdom')
});

Kingdom = DS.extend({
  duchies: DS.hasMany('duchy')
});


FactoryGuy.define('duchy', { /*... */ });
FactoryGuy.define('kingdom', {
  'default': {
    duchies: function () {
      return FactoryGuy.buildList('duchy', 2);
    }
  }
});

FactoryGuy.build("kingdom")
// => "{"duchies":[{"id":4},{"id":5}],"id":2}"

But it's worth keeping in mind that I use factory guy only to mock API responses (using pretender): I don't try to load factoried models into the store directly.

[shivanibhanwal]

Thank you @hjdivad !

We also have similar situation we want to mock the APIs as we have separate REST API server.
I am also looking for the best solution on the similar lines. I am using mockjax. However i was also going through the Pretender.

If you have any suggestions then please do share.

Thanks
Shivani

[danielspaniel]

Hi Guys, I am on internet free vacation for another few days .. will get back to you on Monday ..

[hjdivad]

@shivanibhanwal I'm writing acceptance tests roughly like this

import Ember from 'ember';
import startApp from '../helpers/start-app';

var App, server;

module('Acceptance: Kingdoms', {
  setup: function () {
    App = startApp();
    server = new Pretender();
  },
  teardown: function () {
    server.shutdown();
    Ember.run(App, 'destroy');
  },
});

test('/kingdoms loads some kingdoms and their duchies', function () {
  server.get('/kingdoms', function () {
    var content = {
      kingdoms: FactoryGuy.buildList('kingdom', 2);
    }
    return [200, {}, JSON.stringify(content)];
  });

visit('/kingdoms');

andThen( /* do some assertions */ );
});

[danielspaniel]

@hjdivad and @swatijadhav .. thanks for the interesting ideas. I actually never thought that hasMany associations would work, but you did a simple test .. and voila .. kind of surprised me.

So, what I did was to change the FactoryGuy#assocation method to FactoryGuy#belongsTo and added a FactoryGuy#hasMay method for creating the hasMany association.

There are 2 ways to use this:

FactoryGuy.define('user', {
  user_with_projects: {
    projects: FactoryGuy.hasMany('project', 2)
  },
  traits: {
    with_projects: {
      projects: FactoryGuy.hasMany('project', 2)
    }
  }
})

traits are a nice thing to use since you then can add the projects or not when ever you want and you don't have to make a 'user_with_projects' definition,
since all you have to do is to say:

 // for this to work you have to have defined that trait ( 'with_projects' ) 
 FactoryGuy.build('user', 'with_projects'); 

So those are your two options.

As to using pretender. I am thinking that you don't need to use that at all, since this project uses mockjax and this project has a special test helper mixin called
FactoryGuyTestHelperMixin that has some methods that do the same thing
as you will get from pretender but with less effort ( ie, just a one liner )

for example, instead of what you are doing:

 server.get('/kingdoms', function () {
    var content = {
      kingdoms: FactoryGuy.buildList('kingdom', 2);
    }
    return [200, {}, JSON.stringify(content)];
  });

you could just do:

var kingdoms = FactoryGuy.buildList('kingdom',2);
this.stubEndpointForHttpRequest('/kingdoms', {kingdoms: [kingdoms]}

ok .. so its a two liner .. but this case is one where you are getting all kingdoms.
if you wanted to find just one kingdom .. then you could use the handleFind method, and it would be even easier.

If you have any questions about this .. let me know .. and I will try and point you to more ideas, and or fix up the README alittle more ( traits are not on there yet )

The FacoryGuy.hasMany method is available in version 0.6.0