Question

我试图将我的CRUD的索引页合并为一个作为主要主页，这是我尝试的但是它提出了一个底层方法每个错误，任何想法？还不确定如何在创建和删除后重定向到它。

<h1>Weather forecasts</h1>

<%= link_to 'Search by City', new_cityweather_path(@cityweathers) %>
<%= link_to 'Search by Postcode', new_postcodeweather_path(@postcodeweathers) %>
<h1>Listing Postcodeweathers</h1>

<table>
  <thead>
    <tr>
      <th>Postcode</th>
      <th colspan="3"></th>
    </tr>
  </thead>

  <tbody>
    <% @postcodeweathers.each do |postcodeweather| %>
      <tr>
        <td><%= postcodeweather.postcode %></td>
        <td><%= link_to 'Show', postcodeweather %></td>
        <td><%= link_to 'Edit', edit_postcodeweather_path(postcodeweather) %></td>
        <td><%= link_to 'Destroy', postcodeweather, method: :delete, data: { confirm: 'Are you sure?' } %></td>
      </tr>
    <% end %>
  </tbody>
</table>
<h1>Listing Cityweathers</h1>

<table>
  <thead>
    <tr>
      <th>City</th>
      <th colspan="3"></th>
    </tr>
  </thead>

  <tbody>
    <% @cityweathers.each do |cityweather| %>
      <tr>
        <td><%= cityweather.city %></td>
        <td><%= link_to 'Show', cityweather %></td>
        <td><%= link_to 'Edit', edit_cityweather_path(cityweather) %></td>
        <td><%= link_to 'Destroy', cityweather, method: :delete, data: { confirm: 'Are you sure?' } %></td>
      </tr>
    <% end %>
  </tbody>
</table>

Answer 1

您可以定义单独的控制器，可以说是主控制器，如：

class MainController < ApplicationController
  def index
    @postcodeweathers = PostCodeWeather.all
    @cityweathers = CityWeather.all
  end
end

然后，模板views/main/index.html.erb可以使用partial作为：

<h1>Weather forecasts</h1>

<%= link_to 'Search by City', new_cityweather_path(@cityweathers) %>
<%= link_to 'Search by Postcode', new_postcodeweather_path(@postcodeweathers) %>

<%= render 'post_code_weathers/index' %>

<%= render 'city_weathers/index' %>

然后，部分views/post_code_weathers/_index.html.erb将为：

<h1>Listing Postcodeweathers</h1>

<table>
  <thead>
    <tr>
      <th>Postcode</th>
      <th colspan="3"></th>
    </tr>
  </thead>

  <tbody>
    <% @postcodeweathers.each do |postcodeweather| %>
      <tr>
        <td><%= postcodeweather.postcode %></td>
        <td><%= link_to 'Show', postcodeweather %></td>
        <td><%= link_to 'Edit', edit_postcodeweather_path(postcodeweather) %></td>
        <td><%= link_to 'Destroy', postcodeweather, method: :delete, data: { confirm: 'Are you sure?' } %></td>
      </tr>
    <% end %>
  </tbody>
</table>

而且，另一个部分views/city_weathers/_index.html.erb是这样的：

<h1>Listing Cityweathers</h1>

<table>
  <thead>
    <tr>
      <th>City</th>
      <th colspan="3"></th>
    </tr>
  </thead>

  <tbody>
    <% @cityweathers.each do |cityweather| %>
      <tr>
        <td><%= cityweather.city %></td>
        <td><%= link_to 'Show', cityweather %></td>
        <td><%= link_to 'Edit', edit_cityweather_path(cityweather) %></td>
        <td><%= link_to 'Destroy', cityweather, method: :delete, data: { confirm: 'Are you sure?' } %></td>
      </tr>
    <% end %>
  </tbody>
</table>

现在，您对postcodeweathers控制器的创建和删除操作可以是：

class PostCodeWeatherController < ApplicationController
  def create
    # create code goes here
    redirect_to main_index_path
  end

  def delete
    # delete code goes here
    redirect_to main_index_path
  end
end

cityweathers控制器中的相同类型的操作。

Answer 2

您是否在相应控制器的索引方法中添加了附加变量？

（注意：这会将两个对象合并到PostCodeWeather的索引页中）

class PostCodeWeathersController < ApplicationController

  def index
    @postcodeweathers = PostCodeWeather.all
    @cityweathers = CityWeather.all
  end

end

这将允许您在索引视图中访问这两组记录。

在创建和删除后重定向到索引页面时，您应该能够在控制器中的所需方法中添加它。

def create
  @cityweather = CityWeather.new(params[:city_weather])
  if @cityweather.save
    redirect_to action: "index"
  end
end

如何组合多个CRUD的索引页？

2 个答案: