Rails: 未初始化的常量控制器

Question

这是我的设置：

路线：

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

控制器：

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

查看：

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

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单击 link 时，出现以下错误：

uninitialized constant PlatformsController

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为什么 Rails 寻找 PlatformsController 而不是 Apps::PlatformsController？

Answer 1

据我所知只有 namespaces 和 scopes 需要嵌套模块。