POST only permited parameters to Rails from railsResource in angularJS

This will help to POST only permitted attributes to your Rails app when executing 'update' on railsResource object.

Define transformer:

@app.factory('railsStrongParameters', ->
  (data, resource) ->
    if resource.permit
      for key of data
        unless angular.isFunction(data[key])
          unless key in resource.permit
            delete data[key]
    data
)

Then add it to your model transformers list:

@app.factory('Article', ['railsResourceFactory', (railsResourceFactory) ->
  Article = railsResourceFactory
    url: '/articles'
    name: 'article'
    requestTransformers: [
      'railsFieldRenamingTransformer',
      'railsStrongParameters',
      'railsRootWrappingTransformer'
    ]
  Article.permit = ['title', 'body']
  Article
])

Now you can just copy permitted attributes straight from Rails.