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ruby-on-railsrubycontrollerroutesuninitialized-constant

Rails: uninitialized constant Controller

Here is my setup:

Routes:

resources :apps, except: [:index, :new], path: 'a' do
    resources :platforms, only: [:update]
end

Controller:

class Apps::PlatformsController < ApplicationController

    before_action :authenticate_user!
    before_action :set_platform

    # PATCH/PUT /apps/1/platforms/1
    # PATCH/PUT /apps/1/platforms/1.json
    def update
        # do stuff ...
    end

    private

    # Use callbacks to share common setup or constraints between actions.
    def set_platform
        @platform = App::Platform.find params[:id]
    end

end

View:

= link_to 'Update', app_platform_url(platform.app.slug, platform.id), method: :put

When clicking the link, I get the following error:

uninitialized constant PlatformsController

Why does Rails look for PlatformsController and not Apps::PlatformsController?

Solution

  • As far as I know just namespaces and scopes require a nested module.