即使我已经指定了方法：放置？没有路由匹配自定义放置操作中的[GET]错误。

Question

I'm trying to create a new action in my post controller called move_up which changes the position attribute of a post. I got all set up:

routes.rb

  resources :posts do
    member do
      put :move_up
    end
  end

posts_controller.rb: before_action :set_post, only: [:show, :edit, :update, :destroy, :move_post_up]

  def move_up
    @post.update(position: 0)
  end

index.html.erb:

<% @posts.each do |post| %>
  <tr>
    <td><%= post.content %></td>
    <td><%= post.position %></td>
    <td><%= link_to 'Show', post %></td>
    <td><%= link_to 'Edit', edit_post_path(post) %></td>
    <td><%= link_to 'Destroy', post, method: :delete, data: { confirm: 'Are you sure?' } %></td>
    <td><%= link_to 'Move up', move_up_post_path(post) %></td>
  </tr>
<% end %>

But when I click the link I get this error:

Started GET "/posts/1/move_up?method=put" for 127.0.0.1 at 2014-02-23 12:09:00 +0800

ActionController::RoutingError (No route matches [GET] "/posts/1/move_up"):

How to fix this?

Answer 1

The problem is that you are sending a GET request to an action that only has a PUT route defined for it. In this case you would want to specify the put method in your link_to , like so:

 <td><%= link_to 'Move up', move_up_post_path(post) , method: :put  %></td>