看 Rails Guides 的新手问题 :posts_path 与 create 动作的对应

bigpig85 — Sun, 29 Sep 2013 04:34:02 +0800

新手问题，在看 RoR guides，在访问 localhost:3000/posts/new 的时候，如果点击提交后会转到 create 动作，我想知道这个点击后转到 create 动作是在哪里写的？是 form_for 后面的 :post 来定义的吗？这个跟 create 动作是怎么关联的呢？

In this example, the posts_path helper is passed to the :url option. What Rails will do with this is that it will point the form to the create action of the current controller, the PostsController, and will send a POST request to that route

<%= form_for :post, url: posts_path do |f| %>
  <p>
    <%= f.label :title %><br>
    <%= f.text_field :title %>
  </p>

  <p>
    <%= f.label :text %><br>
    <%= f.text_area :text %>
  </p>

  <p>
    <%= f.submit %>
  </p>
<% end %>

rake routes 的输出：

   Prefix Verb   URI Pattern               Controller#Action
    posts GET    /posts(.:format)          posts#index
          POST   /posts(.:format)          posts#create
 new_post GET    /posts/new(.:format)      posts#new
edit_post GET    /posts/:id/edit(.:format) posts#edit
     post GET    /posts/:id(.:format)      posts#show
          PATCH  /posts/:id(.:format)      posts#update
          PUT    /posts/:id(.:format)      posts#update
          DELETE /posts/:id(.:format)      posts#destroy
     root GET    /                         welcome#index

bigpig85 (Liang)

看 Rails Guides 的新手问题 :posts_path 与 create 动作的对应