Cancan usage?

[sonnymai]

I get this error when trying to use cancan and attempt to browse images in ckeditor:

Expected <app_path>/app/models/ckeditor/picture.rb to define Picture

I have placed this in myapplication_controller.rb

  protected
    # Cancan example
    def ckeditor_authenticate
      authorize! action_name, @asset
    end

    # Set current_user as assetable
    def ckeditor_before_create_asset(asset)
      asset.assetable = current_user
      return true
    end

And this in ability.rb

can [:index], Picture if user.role? :user

I suspect it could be something to do with the namespaced controller/models?

[galetahub]

Try this:

can [:index], Ckeditor::Picture if user.role? :user

[sonnymai]

Thanks for the suggestion. I had tried that before and unfortunately that doesn't work. I just get CanCan::AccessDenied when using that.

heres some lines from the stacktrace:

activesupport (3.1.0) lib/active_support/dependencies.rb:490:in `load_missing_constant'
activesupport (3.1.0) lib/active_support/dependencies.rb:181:in `block in const_missing'
activesupport (3.1.0) lib/active_support/dependencies.rb:179:in `each'
activesupport (3.1.0) lib/active_support/dependencies.rb:179:in `const_missing'
activesupport (3.1.0) lib/active_support/dependencies.rb:501:in `load_missing_constant'
activesupport (3.1.0) lib/active_support/dependencies.rb:181:in `block in const_missing'
activesupport (3.1.0) lib/active_support/dependencies.rb:179:in `each'
activesupport (3.1.0) lib/active_support/dependencies.rb:179:in `const_missing'
app/models/ability.rb:99:in `initialize'
cancan (1.6.5) lib/cancan/controller_additions.rb:349:in `new'
cancan (1.6.5) lib/cancan/controller_additions.rb:349:in `current_ability'
cancan (1.6.5) lib/cancan/controller_additions.rb:330:in `authorize!'
app/controllers/application_controller.rb:17:in `ckeditor_authenticate'
activesupport (3.1.0) lib/active_support/callbacks.rb:430:in `_run__2103710711640583003__process_action__688618921792957714__callbacks'
activesupport (3.1.0) lib/active_support/callbacks.rb:386:in `_run_process_action_callbacks'

[adamtao]

I had the same issue. I figured out that the @asset in the callback is Nil at some point. (Perhaps it creates a dummy asset as a placeholder for the upload link--just guessing.) Anyway, if you just skip the authorize! method if the @asset is Nil, then it works:

  protected
    # Cancan example
    def ckeditor_authenticate
      if @asset
        authorize! action_name, @asset
      end
    end

Also, be sure your ability.rb file uses the suggestion from galetahub above:

can [:index], Ckeditor::Picture if user.role? :user

or

can [:index], Ckeditor::Asset if user.role? :user

[barmstrong]

I ran into this error also.

For me what fixed it was removing #{Rails.root}/app/models/ckeditor from config.autoload_paths in application.rb

[galetahub]

Added support for cancan integration in this commit d336964