Question

我正在尝试使用HABTM方法向rails中的事件添加类别。由于某种原因，它根本不起作用。还有什么奇怪我在活动管理员中的id字段填充了我的事件的标题而不是像这样的id整数：/admin/events/event-test

我有这个设置：

模型/ event.rb

class Event < ActiveRecord::Base
    has_and_belongs_to_many :categories 
    self.primary_key = :id
    has_attached_file :event_image, styles: {
        large: "600x450#",
        medium: "250x250#",
        small: "100x100#"
    }, :default_url => "/images/:style/filler.png"
    validates :title, :slug, :event_image, presence: true   
    extend FriendlyId
    friendly_id :title, use: :slugged
end

管理员/ event.rb

ActiveAdmin.register Event do
    controller do
       def permitted_params
          params.permit event: [:title, :slug, :event_image, :category, :eventdate, :description]
       end
       def find_resource
            scoped_collection.friendly.find(params[:id])
        end
    end
    form do |f|
      f.inputs "Details" do
        f.input :title
      end
      f.inputs "Event Date" do
        f.input :eventdate, :date_select => true, :as => :date_picker, :use_month_names => true
      end
      f.inputs "Category" do
       f.input :categories, :as => :check_boxes, :collection => Category.all
      end
      f.inputs "Biography" do
        f.input :description, :as => :ckeditor, :label => false, :input_html => {  :ckeditor => { :toolbar => 'Full', :height => 400 } }
      end
      f.inputs "Image" do
        f.file_field :event_image
      end
      f.actions
    end
end

模型/ category.rb

class Category < ActiveRecord::Base
    has_and_belongs_to_many :events
    self.primary_key = :id
end

管理员/ category.rb

ActiveAdmin.register Category do
    controller do
       def permitted_params
          params.permit category: [:id]
       end
       def find_resource
            scoped_collection.friendly.find(params[:name])
        end
    end
    form do |f|
      f.inputs "Details" do
        f.input :name
      end
      f.actions
    end
end

schema.rb

  create_table "categories", id: false, force: true do |t|
    t.integer  "id"
    t.string   "name"
    t.datetime "created_at"
    t.datetime "updated_at"
  end

  create_table "categories_events", force: true do |t|
    t.integer "category_id"
    t.integer "event_id"
  end

events_controller.rb

class EventsController < InheritedResources::Base

    def index
        @events = Event.all
    end

    def show
        @event = Event.friendly.find(params[:id])
    end

end

categories_controller.rb

class CategoriesController < InheritedResources::Base

    def index
        @categories = Category.all
    end
    def show
        @category = Category.find(params[:id])
    end

end

当我进入我的视图并尝试访问所选类别时，我得到[]。

有谁知道这里的问题是什么？

如何在rails应用程序中显示我的rails 4类别？

0 个答案: