Rails have Nested Resources for a while, and it has been heavy used (or overused). Say we have two model, Article and Comment.

class Article < ActiveRecord::Base
  has_many :ments
end

class Comment < ActiveRecord::Base
  belongs_to :article
end

Define the Nested Resource in routes.rb

resources :articles do
  resources :ments
end

So now, we can list ments by specific article: http://localhost:3000/articles/1/ments

But Spine can only make url for post request to create Article and Comment like this:

/articles
/ments

How to make Spine's url for Ajax request like this?

/articles/1/ments

I know I can override the url() in Comment Model for retrieval ments, but what about creating a new record?

I also go through the source code as well, what I found is that the create() method in Spine's Ajax module doesn't care about the custom url() function in instance of Comment. what I want is just pass the article_id and using it with my custom url() function to generate url, then I can posting to server for create.

Does it possible without fork and modified version of Spine fo my own?

btw: sorry for my English, wish all of you guys can understand what I want to say about :-)

Thank you and best regards,

Rails have Nested Resources for a while, and it has been heavy used (or overused). Say we have two model, Article and Comment.

class Article < ActiveRecord::Base
  has_many :ments
end

class Comment < ActiveRecord::Base
  belongs_to :article
end

Define the Nested Resource in routes.rb

resources :articles do
  resources :ments
end

So now, we can list ments by specific article: http://localhost:3000/articles/1/ments

But Spine can only make url for post request to create Article and Comment like this:

/articles
/ments

How to make Spine's url for Ajax request like this?

/articles/1/ments

I know I can override the url() in Comment Model for retrieval ments, but what about creating a new record?

I also go through the source code as well, what I found is that the create() method in Spine's Ajax module doesn't care about the custom url() function in instance of Comment. what I want is just pass the article_id and using it with my custom url() function to generate url, then I can posting to server for create.

Does it possible without fork and modified version of Spine fo my own?

btw: sorry for my English, wish all of you guys can understand what I want to say about :-)

Thank you and best regards,

• javascript
• ruby-on-rails
• ruby-on-rails-3
• spine.js

5 Answers 5

The model's url property can be a value or a function. So you could do:

class Comment extends Spine.Model
  @configure "ment", "article_id"
  @extend Spine.Model.Ajax

  @url: ->
    "articles/#{article_id}/ments"

or something similar. The ajax module will evaluate this property and use it as the resource end point when building requests.

add

#= require spine/relation

to app/javascript/app/views/index.js.cofee

to add the relation extension

class App.Project extends Spine.Model
  @configure 'Project', 'name'
  @extend Spine.Model.Ajax
  @hasMany 'pages', 'projects/page'

class App.Page extends Spine.Model
  @configure 'Page', 'name', 'content'
  @extend Spine.Model.Ajax
  @belongsTo 'project', 'Project'

in javascript console

App.Project.find(the_id).pages().create({name:"asd"})

more info in http://spinejs./docs/relations

the link is at the bottom of spinejs model documentation

I have a solution:

http://groups.google./group/spinejs/browse_thread/thread/6a5327cdb8afdc69?tvc=2

https://github./SpoBo/spine

I made a fork which overrides how url's are generated in the ajax module. This allows the create url to contain bits of the model's instance data. For example: /articles/1/ments. Works with create, update, etc.

class App.Post extends Spine.Model 
  @configure 'Post', 'channel_id', 'title' 
  @extend Spine.Model.Ajax 

  resourceUrl: -> 
    "channels/#{@channel_id}/posts" 

  @hasOne 'channel', 'App.Channel' 

I have the same problem as this seems to be one of the biggest problems with Spine.

It is fairly straightforward to implement with BackBone due to it's simplicity, but Spine's internals are quite plex making it quite difficult.

I am trying to implement stand will e back if I have a solution.

Following bit of code worked for me BUT then it didn't...(and I modified this answer). So this is NOT a good solution because Ajax-requests are queued by Spine. It always worked for a first ment but not for subsequent calls since the call to super would return without having sent the PUT/POST.

class Comment extends Spine.Model
  @configure "ment", "article_id"
  @extend Spine.Model.Ajax

  # hack for nested: @article_id is only set correctly during save
  @article_id = "?"
  @url: =>"/articles/#{@article_id}/ments"

  save: ()=>
    # hack for nested resources (see @url)
    Comment.article_id = @article_id
    super
    Comment.article_id = "?"