Rails 4：点击提交按钮后 div 渲染部分

Question

我不明白。我正在构建一个 rails 应用程序并想执行一些单页操作。我现在得到的是，当我从 customers/index.html.erb 的列表中选择一个 'customer' 时，我在 'current_customer' div 中渲染它。当我点击编辑时，表单呈现在 'current_customer' - 完美。但是当我点击表格上的 sumbit 时，我得到一个错误（我理解）'ActionController::UnknownFormat'，因为控制器对 'show' 的操作。我被路由到“http://localhost:3000/customers/2” 我想要的是在 clikcing sumit 之后路由到'http://localhost:3000/customers' 并在 'current_customer' div.[=20= 中渲染 cutomers/_show.html.erb ]

我的代码： customers/index.html.erb

<h1>Listing Customers</h1>

<table>
  <thead>
    <tr>
      <th>Name</th>
      <th colspan="3">Actions</th>
    </tr>
  </thead>

  <tbody>
    <% @customers.each do |customer| %>
      <tr>
        <td><%= customer.name %></td>
        <td><%= link_to 'Show', customer, remote: true %></td>
        <td><%= link_to 'Edit', edit_customer_path(customer), remote: true %></td>
        <td><%= link_to 'Destroy', customer, method: :delete, data: { confirm: 'Are you sure?' } %></td>
      </tr>
    <% end %>

  </tbody>
</table>

<br>
<div id="current_customer"></div>
<br>

<%= link_to 'New Customer', new_customer_path, class: "button", id: "new_customer" %>

customers/_show.html.erb

<p>
  <strong>Name:</strong>
  <%= @customer.name %>
  <%= @customer.id %>
</p>

<%= link_to 'Edit Customer', edit_customer_path(@customer) %> |

customers/_edit.html.erb

<h1>Editing Customer</h1>

<%= render 'form' %>

<%= link_to 'Show', @customer %> |

customers/_form.html.erb

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

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

  <div class="field">
    <%= f.label :name %><br>
    <%= f.text_field :name %>
  </div>
  <div class="actions">
    <%= f.submit id: "customer_button", remote: true %>
  </div>
<% end %>

customers/edit.js.erb

$("#current_customer").html("<%= escape_javascript(render partial: 'customers/edit', locals: { customer: @customer } ) %>");

customers_controller.rb（部分）

def show
    respond_to do |format|
      format.js {render layout: false}
    end
  end

  # GET /customers/new
  def new
  end

  # GET /customers/1/edit
  def edit
    respond_to do |format|
      format.js {render layout: false}
    end
  end

def update
    respond_to do |format|
      if @customer.update(customer_params)
        format.html { redirect_to @customer, notice: 'Customer was successfully updated.' }
        format.json { render :show, status: :ok, location: @customer }
      else
        format.html { render :edit }
        format.json { render json: @customer.errors, status: :unprocessable_entity }
      end
    end
  end

我很乐意提供帮助！谢谢

Answer 1

您需要将 remote: true 放在 form_for 标签中而不是 submit 按钮，请在此处添加

<%= form_for @customer, remote: true do |f| %>

将其从

中删除

<%= f.submit id: "customer_button" %>

此外，update 操作也应该接受 AJAX 请求，创建 update.js.erb 模板并在您使用 [=12= 提交表单时处理 AJAX 请求]

希望对您有所帮助！

Answer 2

按原样提交表单将调用 POST /customer/1。您需要在您的控制器和路由中定义一个更新方法，并在您的表单中添加 method: :patch 以实现 PATCH /customer/1.

此外，您可能想定义一个 update.js.erb 并在表单中添加 remote: true 以添加一些动态 AJAX.

Answer 3

你可以用这个替换你的节目link：

<%= link_to "show", {:action => :show}, :remote => true %>

或

<%= link_to "show", customer_path(customer), :remote => true %>

Rails 4：点击提交按钮后 div 渲染部分

Rails 4: Render partial in div after submit button click

ruby-on-rails

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redirect

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partial