Question

我有一个列出所有广告的索引页面（简单的脚手架生成列表）。我已经这样做，当我点击广告时，它将展开（css和jquery）并显示该广告的信息。现在我无法解决的问题是，我希望能够通过索引ads_item视图中的表单预订该广告。

并且要清楚，以便我们在同一页面上是一个关于我正在做什么的模型

我得到的错误是

param is missing or the value is empty: ads_item

这就是我得到的

路由

  resources :ads_items do
    resources :bookings
  end

ads_items控制器

def new
    @ads_item = AdsItem.new
end

def create
    @ads_item = AdsItem.new(ads_item_params)

    respond_to do |format|
      if @ads_item.save
      format.html { redirect_to @ads_item, notice: 'Ads item was successfully created.' }
      format.json { render :show, status: :created, location: @ads_item }
  else
      format.html { render :new }
      format.json { render json: @ads_item.errors, status: :unprocessable_entity }
    end
  end
end

预订控制器

def new

  @booking = Booking.new

end

def create
  @booking = Booking.new(booking_params)

  respond_to do |format|
    if @booking.save
      format.html { redirect_to @booking, notice: 'Booking was successfully created.' }
      format.json { render :show, status: :created, location: @booking }
    else
      format.html { render :new }
      format.json { render json: @booking.errors, status: :unprocessable_entity }
    end
  end
end

模型ads_item

class AdsItem < ActiveRecord::Base
  belongs_to :user
  has_many :bookings
  accepts_nested_attributes_for :bookings
end

预订模型

class Booking < ActiveRecord::Base
  belongs_to :ads_item
end

数据库

create_table "ads_items", force: true do |t|
    t.integer  "user_id"
    t.date     "date"
    t.time     "time"
    t.string   "type_of_service"
    t.string   "address"
    t.text     "include_in_price"
    t.integer  "rate"
    t.integer  "original_price"
    t.integer  "now_price"
    t.boolean  "booked"
    t.string   "category"
    t.datetime "created_at"
    t.datetime "updated_at"
    t.string   "company_information"
    t.string   "company_website"
    t.string   "company_facebook"
    t.string   "company_twitter"
    t.string   "company_instagram"
    t.string   "company_google_maps"
    t.string   "company_phone"
    t.string   "company_name"
    t.string   "logo_path"

end


create_table "bookings", force: true do |t|
    t.string   "first_name"
    t.string   "last_name"
    t.string   "social_nr"
    t.string   "phone_nr"
    t.string   "email"
    t.integer  "ads_item_id"
    t.datetime "created_at"
    t.datetime "updated_at"
end

和ads_items索引视图在哪里列出所有项目（脚手架）

<% @ads_items.each do |ads_item| %>
   list all items


  <%= form_for :booking do |f| %>
    <%= f.text_field :first_name %>
    <%= f.text_field :last_name %>
    <%= f.text_field :social_nr %>
    <%= f.text_field :phone_nr %>
    <%= f.text_field :email %>
    <%= f.number_field :ads_item_id, :value => ads_item.id %>                          

    <%= f.submit %>


  <% end %>
<% end %>

我确实遵循了此Rails guide

但它不会奏效。我在这里错过了什么吗？如何在填写表单后呈现表单以便获取广告ID并将其保存到预订表中？

Answer 1

到目前为止你所做的一切看起来是正确的。您可以使用rails中的嵌套属性功能通过AdItem模型创建预订，请查看此处的文档http://api.rubyonrails.org/classes/ActiveRecord/NestedAttributes/ClassMethods.html

您可以使用视图中的fields_for方法呈现预订表单。

嵌套模型表单属性不起作用

1 个答案: