Ruby on Rails發布路徑變成獲取路徑

Question

我正在將Ruby on Rails 5用於個人項目，但似乎無法獲得指向正確控制器操作和客戶端操作的鏈接路由。

<div class="admin-users index">
    <h2>Admin Users</h2>
    <%= image_tag('plus_sign.png', :size => '11x11', :alt => '+') %>
    <%= link_to("Add New Admin User", new_admin_user_path, :class => 'action new') %>
    <table class="listing" summary="Admin user list">
        <tr class="header">
            <th>Username</th>
            <th>Name</th>
            <th>Email</th>
            <th>Actions</th>
        </tr>
        <% @admin_users.each do |admin_user| %>
        <tr>
            <td><%= admin_user.username %></td>
            <td><%= admin_user.name %></td>
            <td><%= mail_to(admin_user.email) %></td>
            <td class="actions">
                <%= link_to("Edit", edit_admin_user_path(admin_user), :class => 'action edit') %>
                <%= link_to("Delete", delete_admin_user_path(admin_user), :class => 'action delete') %>
                <%= link_to("Follow User", followings_path(:followed_id => admin_user), :method => :post)%>


            </td>
        </tr>
        <% end %>
    </table>
</div>

我有一個鏈接操作，發出發布請求以在兩個用戶之間創建綁定。

Rails.application.routes.draw do

  resources :followings, :except => [:show, :update, :delete, :new] do
  end

我使用資源路由使事情變得更簡單，但是不幸的是，當我單擊“關注用戶”時，我的發布請求變成了一個獲取請求，並且我無法將任何用戶添加到我的關注列表中。

http://localhost:3000/followings?followed_id=5

當我單擊“關注用戶”按鈕時，它會帶我到上面的URL，這很好，但是在查看控制台后，我看到它是一個GET請求。

Started GET "/followings?followed_id=5" for ::1 at 2016-12-24 18:16:26 -0400
  ActiveRecord::SchemaMigration Load (1.0ms)  SELECT `schema_migrations`.* FROM `schema_migrations`
Processing by FollowingsController#index as HTML
  Parameters: {"followed_id"=>"5"}
  AdminUser Load (0.0ms)  SELECT  `admin_users`.* FROM `admin_users` WHERE `admin_users`.`id` = 1 LIMIT 1
  Rendering followings/index.html.erb within layouts/admin
  Following Load (0.0ms)  SELECT `followings`.* FROM `followings` WHERE `followings`.`admin_user_id` = 1
  AdminUser Load (1.0ms)  SELECT  `admin_users`.* FROM `admin_users` WHERE `admin_users`.`id` = 3 LIMIT 1
  Rendered followings/index.html.erb within layouts/admin (64.0ms)
Completed 200 OK in 542ms (Views: 448.4ms | ActiveRecord: 10.0ms)

這是以下控制器：

class FollowingsController < ApplicationController
  layout 'admin'
  def index
    admin_user = AdminUser.find(session[:user_id])
    @user = admin_user
  end

  def create
      current_user = AdminUser.find(session[:user_id])
      @following = current_user.following.build(:followed_id => params[:followed_id])
      if @following.save
        flash[:notice] = "Added user."
        redirect_to root_url
      else
        flash[:notice] = "Cannot add user."
        redirect_to(admin_users_path)
      end
  end

  def destroy
      current_user = AdminUser.find(session[:user_id])
      @following = current_user.followings.find(params[:id])
      @following.destroy
      flash[:notice] = "Removed user."
      redirect_to root_url
  end
end

不知道為什么要這么做。

Answer 1

我不確定，但是我可以想象這與您為“后續活動”設置的路線有關。 跟隨不是跟隨的復數，因此不遵循Rails的命名約定，因此不能正確生成路由。 我會將資源切換為“關注者”（因為關注者是關注者的復數），或者設置您自己的自定義路線，而不使用資源方法。 您可以執行以下操作：

post 'follow_user/:followed_id' => 'followings#create', as: :follow_user
get 'followings' => 'followings#index', as: :followings

那么您的關注用戶鏈接將是：

<%= link_to("Follow User", follow_user_path(followed_id: admin_user), method: :post) %>

我還建議在更新或創建記錄時在控制器中使用強參數。 http://api.rubyonrails.org/classes/ActionController/StrongParameters.html