Question

在我的客户控制器中，更新方法代码如下：

  def update
    @customer= Customer.find(params[:id])
    if @customer.update_attributes(customer_params)
      redirect_to  customers_path
    else
      render 'edit'
    end
  end

在我的客户索引页面视图中，我计划添加一个＆＃34; link_to＆＃34;链接，如果单击，那么特定客户字段＆＃34; doc_delete＆＃34;应该更新值＆＃34; TRUE＆＃34;。

<td><%= link_to "[Update", *************what is here ?******** method: :put %></td>

Answer 1

您可以通过button_to传递隐藏的参数：

<ResourceDictionary
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

    <!-- Expression Blend 4 created this (and a lot more) from some system theme on Windows 7 -->
    <Style TargetType="{x:Type MenuItem}">
        <Setter Property="HorizontalContentAlignment" Value="{Binding HorizontalContentAlignment, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/>
        <Setter Property="VerticalContentAlignment" Value="{Binding VerticalContentAlignment, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/>
        <Setter Property="Background" Value="Transparent"/>
        <Setter Property="ScrollViewer.PanningMode" Value="Both"/>
        <Setter Property="Stylus.IsFlicksEnabled" Value="False"/>
        <Setter Property="Template" Value="{DynamicResource {ComponentResourceKey ResourceId=SubmenuItemTemplateKey, TypeInTargetAssembly={x:Type MenuItem}}}"/>
        <Style.Triggers>
            <Trigger Property="Role" Value="TopLevelHeader">
                <Setter Property="Padding" Value="7,2,8,3"/>
                <Setter Property="Template" Value="{DynamicResource {ComponentResourceKey ResourceId=TopLevelHeaderTemplateKey, TypeInTargetAssembly={x:Type MenuItem}}}"/>
            </Trigger>
            <Trigger Property="Role" Value="TopLevelItem">
                <Setter Property="Padding" Value="7,2,8,3"/>
                <Setter Property="Template" Value="{DynamicResource {ComponentResourceKey ResourceId=TopLevelItemTemplateKey, TypeInTargetAssembly={x:Type MenuItem}}}"/>
            </Trigger>
            <Trigger Property="Role" Value="SubmenuHeader">
                <Setter Property="Padding" Value="5,4,2,3"/>
                <!-- Changed from 2,3,2,3 -->
                <Setter Property="Template" Value="{DynamicResource {ComponentResourceKey ResourceId=SubmenuHeaderTemplateKey, TypeInTargetAssembly={x:Type MenuItem}}}"/>
            </Trigger>
            <Trigger Property="Role" Value="SubmenuItem">
                <Setter Property="Padding" Value="5,4,2,3"/>
                <!-- Changed from 2,3,2,3 -->
            </Trigger>
        </Style.Triggers>
    </Style>

    <!-- Expression Blend 4 created this from some system theme on Windows 7 -->
    <!-- Edited like in: http://devlicio.us/blogs/christopher_bennage/archive/2008/06/19/styling-separators-in-wpf.aspx -->
    <!-- Decreased in height to be more platform standard -->
    <Style x:Key="{x:Static MenuItem.SeparatorStyleKey}" TargetType="{x:Type Separator}">
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type Separator}">
                    <Grid Margin="0,3,0,2" SnapsToDevicePixels="true">
                        <!-- Changed from 0,6,0,4 -->
                        <Rectangle Fill="#E0E0E0" Height="1" Margin="30,0,1,1"/>
                        <Rectangle Fill="White" Height="1" Margin="30,1,1,0"/>
                    </Grid>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</ResourceDictionary>

这将创建一个微形式，就像<%= button_to "Update", user, method: :put, params: { doc_delete: true } %>提到的那样。虽然效率很低，但这是将数据发送到Marwen操作的最佳方式。

-

另一种更有效的方法是定义自定义路线/动作：

update

Answer 2

您需要一张表格才能为您完成

<% unless customer.doc_delete? %>
  <%= form_for customer do |f| %>
    <%= f.hidden_field_tag :doc_delete, true %>
    <%= f.submit %>
  <% end %>
<% end %>

在何处插入此表单？

如果您使用以下方式向客户呈现：

   <%=render @costumers %>

然后您将在/customers/_customer.html.erb

中添加表单

如果您手动循环它们：

<% @customers.each do |customer| %>
  <%=customer.full_name %>
  ## Here you can add the form
<% end %>

Answer 3

另一种方法是，您可以使用 Ajax 。

#app/views/customers/index.html.erb
<% @customers.each do |customer| %>
   <% if !customer.doc_delete == true %>
     <%= link_to "Update", customer_doc_delete_path(customer), remote: true %>
   <% else %>
     <%= Updated %>
   <% end %>
<% end %>

#config/routes.rb
resources :customers do
   patch :doc_delete, on: :member #-> url.com/customers/:id/doc_delete
end

#app/controllers/customers_controller.rb
class CustomersController < ApplicationController
   def doc_delete
      @customer = Customer.find params[:id]

      if @customer.update doc_delete: true
        respond_to do | format |  
          format.js {render :nothing => true} 
        end 
      end
   end
end

Answer 4

在我的index.html中

      <td>
        <%= hidden_field_tag 'delete_present', :value => "present" %>
        <%=link_to "[update]", customer_path(customer, :doc_delete => true), :method => :put, :confirm => "Are you sure?" %>
      </td>

在我的客户控制器中

def update
      if params[:doc_delete].present?
        @customer= Customer.find(params[:id])
        @customer.doc_delete=true
        @customer.save
        redirect_to  customers_path
      else  
        @customer= Customer.find(params[:id])
        if @customer.update_attributes(customer_params)
          redirect_to  customers_path
        else
          render 'edit'
        end
      end
  end

Rails 4：表布尔列更新使用＆＃34; link_to＆＃34;具有特定值＆＃34; TRUE＆＃34;总是

4 个答案:

在何处插入此表单？