Examples of using relationships during create / update

[garytaylor]

Whilst the relationships work find and are well documented for reading - I am finding that I really do not know what I am doing when trying to use them during creation / updating of a resource. I was expecting this to work :-

forum = Forum.find(1).first
forum.posts << Post.find(5)
forum.save

This is assuming that a forum has many posts

Please can you add some examples to the readme to explain how things like this should be done ? I am assuming now that it has something to do with the "relationships" method but can't be sure.

Thanks

Gary

[rondale-sc]

I'm also curious about this. I'm currently giving

{
  :title=>"Ember.js 1.11 Workshop",
   :url=>"https://www.youtube.com/watch?v=8GMeMM0ukYM",
   :relationships=>{:author=>{:data=>[{:type=>"people", :id=>"39"}]}}}

And was assuming that it'd be parse on init of my JsonApiClient::Resurce for saving. But haven't had any luck.

Any helper here would be greatly appreciated.

Cheers, Jon

[rondale-sc]

@garytaylor There are some examples of this in the tests:

https://github.com/chingor13/json_api_client/blob/f779c3c6b4f8b292824238a92446d3cfa922fbe2/test/unit/updating_test.rb#L172

I believe given

  class Resource < Base
    has_many :authors
  end

  class Author < Base
  end

You should be able to do:

author1 = Author.new(name: 'foo')
author1.save
author2 = Author.new(name: 'bar')
author2.save

r = Resource.new(title: 'foo')
r.relationships.authors = [author1, author2]
r.save

[JohnSmall]

I can see how to save things in relationships, and it works, but I can't get them back again.

Taking the above example. If I were to do

 r = Resource.find('the resource id').first
 r.relationships.authors

Doesn't return the authors that were added, just the path to the relationships. So how do I find the authors related to the resource?

[masimons]

@JohnSmall does it work if you do something like Resource.find('the resource id').includes(:authors).first?