Question

当我尝试使用form_with和指向现有控制器操作的自定义URL提交发布请求时，视图不会呈现。

我正在尝试遵循一个教程，该教程显示ROR中的form_for和form_tag之间的区别，但是尝试使用form_with，因为前者将不推荐使用。使用form_tag一切正常。

表单帮助者的Rails Guides仅显示form_for和form_tag。

ROR API docs确实显示了form_with的一些示例，但是我并没有连接点。

<!-- index.html.erb -->

<%= form_with(url: create_users_path) do |f| %>
  <%= f.text_field :name, placeholder: "Your Name" %>
  <%= f.number_field :age, placeholder: "Your Age" %>
  <%= f.submit "Create Profile" %>
<% end %>

和

  # routes.rb

  get 'users' => 'welcome#users'
  post 'create_users' => 'welcome#users'

和

# welcome_controller.rb

def users
  if params[:name] != nil
    user = User.create(name: params[:name], age: params[:age])
  end
  @users = User.all
end

和

<!--users.html.erb-->
<table border="2">
<tr>
    <th>Name</th>
    <th>Age</th>
</tr>

<% @users.each do |user| %>
    <tr>
        <td><%= user.name %></td>
        <td><%= user.age %></td>
    </tr>
<% end %>

</table>
<br>
<%= link_to "Return to Index", root_path %>

我的用户表使用表单中发送的数据进行更新，但是由于index.html.erb的活动记录调用是，所以我留在了我的users.html.erb视图上，而不是期望的.create在users操作中。

这是我来自POST请求的服务器日志，其中welcome/users.html.erb被渲染（浏览器未更新。）GET将在浏览器中渲染页面

Started POST "/create_users" for 127.0.0.1 at 2018-08-05 22:18:26 -0400
Processing by WelcomeController#users as JS
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"upoeRgVioYXs+Z+vsyBdg4CnXrSTOMCzPFXSHUKT2IlrVMDtvnf8UD7yJkPMYw0zkwihmPvY3Yq0BlG7RFsIIQ==", "name"=>"testy testerson", "age"=>"28", "commit"=>"Create Profile"}
   (0.1ms)  begin transaction
  SQL (2.4ms)  INSERT INTO "users" ("name", "age", "created_at", "updated_at") VALUES (?, ?, ?, ?)  [["name", "testy testerson"], ["age", 28], ["created_at", "2018-08-06 02:18:26.466212"], ["updated_at", "2018-08-06 02:18:26.466212"]]
   (3.2ms)  commit transaction
  Rendering welcome/users.html.erb within layouts/application
  User Load (0.2ms)  SELECT "users".* FROM "users"
  Rendered welcome/users.html.erb within layouts/application (4.3ms)
Completed 200 OK in 147ms (Views: 56.8ms | ActiveRecord: 6.7ms)


Started GET "/users" for 127.0.0.1 at 2018-08-05 22:19:19 -0400
Processing by WelcomeController#users as HTML
  Rendering welcome/users.html.erb within layouts/application
  User Load (0.3ms)  SELECT "users".* FROM "users"
  Rendered welcome/users.html.erb within layouts/application (2.3ms)
Completed 200 OK in 60ms (Views: 51.1ms | ActiveRecord: 0.3ms)

我非常确定，在同一动作中进行创建和显示不是最佳实践……只是试图更好地理解rails。我对路线/控制器/视图关系缺少什么？

我正在使用Rails versrion 5.1.6

使用form_with，URL和ROR中的现有控制器操作时，视图不会呈现

0 个答案: