M＃drive

Question

方案

我的Rails项目中有四个资源，即。 Drive，Drivecomment，College和Manager

resources :drives do 
    resources :drivecomments
  end

devise_for :colleges, controllers: { sessions: "college/sessions", registrations: "college/registrations" }
devise_for :managers, controllers: { sessions: "manager/sessions", registrations: "manager/registrations" }

它们之间的关联如下：

Manager => belongs_to :college

College => has_many :managers
College => has_many :drives

Drives => belongs_to :college
Drives => has_many :drivecomments

Drivecomments => belongs_to :drives

从上面的关联可以清楚地看出，每个云端硬盘都可以有多个Drivecomments，可以由管理员提交。

另外，我创建了一个自定义Controller #View资源＆＃34; m＆＃34;用于提供管理器接口（coz默认管理器是从设计生成并使用相同的资源意味着所有后期操作都被重定向到＆＃34;创建＆＃34;方法，包括sign_up，这最终意味着我根本无法签名）

resources :m, :only => [:index] do
    member do
      get :drive
    end
  end

所以，在我的＆＃34; m＆＃34;中，我创建了一个用于发布评论的表单以及一个用于显示所有评论的表。

用于显示评论：

../drive.html.erb
<h2>Drive Comments</h2>
<table>
  <thead>
    <tr>
      <th>Jobseeker</th>
      <th>Comment</th>
      <th colspan="3"></th>
    </tr>
  </thead>

  <tbody>
    <% @comments.each do |comment| %>
      <tr>
        <td><%= comment.jobseeker.first_name  %></td>
        <td><%= comment.title %></td>
      </tr>
    <% end %>
  </tbody>
</table>

../m_controller.erb
def drive
    @drive = @drives.find_by_id(params[:id])
    @comments = @drive.drivecomments
    @addcomment = Drivecomment.new
end

添加评论：

../drive.html.erb
<%= form_for [@addcomment], as: :addcomment, url: {action: "addcomment"} do |f| %>

    <div><%= f.hidden_field :drive_id, :value => @drive.id %></div>
    <div><%= f.hidden_field :jobseeker_id, :value => 2 %></div>

    <div><%= f.label "Comment:" %><%= f.text_field :title %></div>

    <div><%= f.submit "Post Comment" %></div>
  <% end %>

../m_controller.erb
  def new
    @addcomment = Drivecomment.new
  end

  def create
    @drive = @drives.find_by_id(params[:id])
    @addcomment = @drive.drivecomments.build
    @addcomment.save
  end

问题

当我提交表单时，我收到错误消息

M＃drive

中的ActionController :: UrlGenerationError

显示/home/xxx/xxx/xxx/app/views/m/drive.html.erb第30行：

没有路线匹配{：action =＆gt;＆＃34; addcomment＆＃34;，：controller =＆gt;＆＃34; m＆＃34;，：id =＆gt;＆＃34; 5＆＃ 34;}

提取的来源（第30行）：

</table>

<%= form_for [@addcomment], as: :addcomment, url: {action: "addcomment"} do |f| %>

    <div><%= f.hidden_field :drive_id, :value => @drive.id %></div>
    <div><%= f.hidden_field :jobseeker_id, :value => 2 %></div>

或者，如果我像这样写我的表格

<%= form_for [@drive, @addcomment] do |f| %>

    <div><%= f.hidden_field :drive_id, :value => @drive.id %></div>
    <div><%= f.hidden_field :jobseeker_id, :value => 2 %></div>

    <div><%= f.label "Comment:" %><%= f.text_field :title %></div>

    <div><%= f.submit "Post Comment" %></div>
<% end %>

它成功提交表单并添加了一个值，但我被重定向到＆＃34; http://localhost:3000/drives/5/drivecomments/8＆＃34;来自＆＃34; http://localhost:3000/m/5/drive＆＃34;这是我不想要的。请告诉我这个问题的解决方法可能是什么。

其他信息

Drivecomments _form.html.erb

<%= form_for([@drive, @drivecomment]) do |f| %>
  <% if @drivecomment.errors.any? %>
    <div id="error_explanation">
      <h2><%= pluralize(@drivecomment.errors.count, "error") %> prohibited this drivecomment from being saved:</h2>

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

  <div class="field">
    <%= f.label :jobseeker_id %><br>
    <%= f.number_field :jobseeker_id %>
  </div>
  <div class="field">
    <%= f.label :drive_id %><br>
    <%= f.number_field :drive_id %>
  </div>
  <div class="field">
    <%= f.label :title %><br>
    <%= f.text_area :title %>
  </div>
  <div class="actions">
    <%= f.submit %>
  </div>
<% end %>

从drivecoments_controller.rb中提取

before_action :set_drivecomment, only: [:show, :edit, :update, :destroy]
before_filter :load_drive

def new
     @drivecomment = @drive.drivecomments.new
end

def create
    @drivecomment = @drive.drivecomments.new(drivecomment_params)

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

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

    # Never trust parameters from the scary internet, only allow the white list through.
    def drivecomment_params
      params.require(:drivecomment).permit(:jobseeker_id, :drive_id, :title)
    end

    def load_drive
       @drive = Drive.find(params[:drive_id])
    end

Answer 1

如果您想要从控制器.cfc使用操作create，您应该像这样定义表单：

此外，您需要在路线上定义<%= form_for @addcomment, url: url_for(controller: :m, action: :create) do |f| %>操作，更新此部分路线：

create

如何覆盖控制器以提交表单

M＃drive

1 个答案: