getting JSON data from server with Ember

Question

I have a Court.rb model (inheriting from Active Record) in my Rails app that I'm also using with ember-rails gem.

I created a Court model for it in Ember

 App.Court = DS.Model.extend({
    jurisdictionId: DS.attr('number'),
    name: DS.attr('string')
  });

There is a courts resource in the router

  App.Router.map(function() {
    this.resource("courts");
    this.resource("about");

  });

and, to retrieve the data, I created a courts route that calls findAll() on the Court model

App.CourtsRoute = Ember.Route.extend({
  model: function() {
    return App.Court.findAll();
  }

});

Ember's giving me a long error message for this, the final part of which says has no method 'findAll' . I also tried to use App.Court.find() and got the same error.

This is essentially what Ryan Bates did to retrieve data from the server in his Railscast on Ember He created an Entry model

Raffler.Entry = DS.Model.extend({
  name: DS.attr('string'),
  winner: DS.attr('boolean')
});

And also an Entries route that calls find on the model

 Raffler.EntriesRoute = Ember.Route.extend

  model:  -> Raffler.Entry.find()

Can you explain what I might be doing wrong to get this to work?

@kroofy I ran this command yesterday to get the latest version rails generate ember:install --head whatever that is. — BrainLikeADullPencil
– BrainLikeADullPencil, Commented Sep 8, 2013 at 17:03
Try using return this.store.find('court'); in the model hook — kroofy
– kroofy, Commented Sep 8, 2013 at 17:13

kroofy · Accepted Answer · 2013-09-09 08:42:54Z

3

You are probably running the latest version of Ember Data,

Try using:

return this.store.find('court'); instead of return App.Court.findAll();

Here's a jsfiddle showing a simple structure: http://jsfiddle.net/XUmTC/2/

For more information of the transition look here: https://github.com/emberjs/data/blob/master/TRANSITION.md

edited Sep 9, 2013 at 8:42

answered Sep 8, 2013 at 17:18

kroofy

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5 Comments

BrainLikeADullPencil Over a year ago

Thanks for trying but it gave me an error.

Assertion failed: The response from a findAll must be an Array, not {courts: [object Object],[object Object],[object Object]...

I thought Ember needed the root courts (in this case) in the json returned from server. Is that the problem do you think?

kroofy Over a year ago

It should use the root key courts, maybe the JSON is not formatted correctly? Can you make a JSfiddle with fixture data?

BrainLikeADullPencil Over a year ago

I tried to adapt someone else's Ember fiddle with some fixture data but I couldn't figure out how to get it to work. However, you can see the fixture data here along with the code I added. jsfiddle.net/backyardguy/PkT8x/365

kroofy Over a year ago

Added a fiddle to it. So if that's not working for you when you switch to real backend, it could be that the data is not properly formatted.

BrainLikeADullPencil Over a year ago

thanks a lot. I thought the data that Ember expects JSON data to have the root (in this case 'courts'), but you removed it.

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