Question

我目前正在使用通过关联具有has_many的嵌套资源。

试图简单地编辑我的dynamic_elements值，但是在生成编辑页面时，将使用表单按钮启动表单以完成发布操作。我读过一点Rails可以做到这一点，因为某些浏览器不支持PUT，因此只发布了Post。我也读过，以防止表格重复，我只需要将:id放在强参数中即可。唯一的问题是，:id在我提交表单时没有将其纳入参数。 :id出现在用于编辑视图的参数中，但是一旦我单击“提交”，就找不到它们了。这是一些代码：

在这里，您可以看到{"dynamic_page_id"=>"2", "id"=>"31"}的参数存在于编辑方法/视图中，但是一旦调用更新方法，"id"=>"31"就会丢失

enter image description here

路线：

namespace :admin do
 resources :dynamic_pages do
  resources :dynamic_elements
 end
end

耙道： enter image description here

型号：

module Admin
 class DynamicElement < ApplicationRecord
  has_many :dynamic_page_elements
  has_many :dynamic_pages, :through => :dynamic_page_elements
 end
end

module Admin
 class DynamicPage < ApplicationRecord
  has_many :dynamic_page_elements
  has_many :dynamic_elements, :through => :dynamic_page_elements
 end
end

module Admin
 class DynamicPageElement < ApplicationRecord
  belongs_to :market_page
  belongs_to :market_element
 end
end

控制器：

module Admin
  class DynamicElementsController < ApplicationController
   before_action :set_dynamic_element, only: [:show, :edit, :update, :destroy]
   before_action :set_dynamic_page, only: [:index, :show, :edit, :update, :destroy]

  def index
   @dynamic_elements = DynamicElement.all
   # @dynamic_page = DynamicPageElement.find(params[:dynamic_page_id])
  end

   def show
   end

   def new
    @dynamic_element = DynamicElement.new
   end

   def edit
    @dynamic_element = DynamicElement.find(params[:id])
    @styles_hash = @dynamic_element.style
   end

   def create
    # @dynamic_element = DynamicElement.find(params[:id])
   @dynamic_element = DynamicElement.new(dynamic_element_params)

   respond_to do |format|
     if @dynamic_element.save
      format.html { redirect_to admin_dynamic_page_dynamic_elements_url, notice: 'Dynamic element was successfully created.' }
      format.json { render :show, status: :created, location: @dynamic_element }
    else
      format.html { render :new }
      format.json { render json: @dynamic_element.errors, status: :unprocessable_entity }
    end
  end
  @dynamic_page_element = DynamicPageElement.new(dynamic_element_id: @dynamic_element.id, dynamic_page_id: params[:dynamic_page_id])
  @dynamic_page_element.save
end

def update
  respond_to do |format|
    if @dynamic_element.update(dynamic_element_params)
      format.html { redirect_to admin_dynamic_page_dynamic_elements_path, notice: 'Dynamic element was successfully updated.' }
      format.json { render :show, status: :ok, location: @dynamic_element }
    else
      format.html { render :edit }
      format.json { render json: @dynamic_element.errors, status: :unprocessable_entity }
    end
  end
end

def destroy
  @dynamic_page_element = DynamicPageElement.where(dynamic_element_id: params[:id])[0]
  @dynamic_page_element.destroy
  @dynamic_element.destroy
  respond_to do |format|
    format.html { redirect_to admin_dynamic_page_dynamic_elements_path, notice: 'Dynamic element was successfully destroyed.' }
    format.json { head :no_content }
  end
end

private
  # Use callbacks to share common setup or constraints between actions.
  def set_dynamic_element
    @dynamic_element = DynamicElement.find(params[:id])
  end

  def set_dynamic_page
    @dynamic_page = DynamicPage.find(params[:dynamic_page_id])
  end

  def dynamic_element_params
    params.permit(:style, :description, :id)
  end

 end
end

表格：

<%= form_with(url:admin_dynamic_page_dynamic_elements_url) do |form| %>
 <% if dynamic_element.errors.any? %>
  <div id="error_explanation">
  <h2><%= pluralize(dynamic_element.errors.count, "error") %> 
    prohibited this dynamic_element from being saved:</h2>

    <ul>
     <% dynamic_element.errors.full_messages.each do |message| %>
      <li><%= message %></li>
     <% end %>
    </ul>
  </div>
<% end %>

<div class="field">
 <%= form.label :description %>
 <%= form.text_field :description, value: @dynamic_element.description %>
</div>

<div class="field">
 <%= form.label :style %>
 <%= form.text_area :style, value: @styles_hash %>
</div>

<h5>Current Styles</h5>
<ul style="list-style-type: none;">
 <% @dynamic_element.style.keys.zip(@dynamic_element.style.values).each do |key, value| %>
   <li>"<%= key %>" => "<%= value %>", </li>
  <% end %>
 </ul>

 <div class="actions">
  <%= form.submit %>
 </div>
<% end %>

我尝试了url:admin_dynamic_page_dynamic_elements_url而不是我的表单助手中的model: @market_page，但只是抛出了此错误：

undefined method `admin_dynamic_element_path' for #<#<Class:0x007ffe56cf57b8>:0x007ffe56c45340>
Did you mean?  admin_dynamic_page_path
               admin_dynamic_pages_path

enter image description here

我似乎无法弄清楚，任何帮助将不胜感激。如果我需要提供更多信息，请告诉我！谢谢！

Rails：编辑后，编辑表单会导致重复（命名空间内的嵌套资源）

0 个答案: