Railscast 198，但使用formtastic

Question

如何使用Formtastic分别编辑多个记录，如RyanB's Railscast中所述？Formtastic没有使用RyanB的方法所依赖的form_tag。

Answer 1

semantic_form_for只是form_for的包装器，所以您可以使用相同的参数。下面是Ryan Bates' screencast的一个形式化版本

views/products/edit_individual.html.erb

<% semantic_form_for :update_individual_products, :url => update_individual_products_path, :method => :put do |f| %>
  <% for product in @products %>
    <% f.fields_for "products[]", product do |ff| %>
      <h2><%=h product.name %></h2>
      <%= render "fields", :f => ff %>
    <% end %>
  <% end %>
  <p><%= submit_tag "Submit" %></p>
<% end %>

views/products/index.html.erb

<% semantic_form_for :edit_individual_products, :url => edit_individual_products_path do %>
  <table>
    <tr>
      <th></th>
      <th>Name</th>
      <th>Category</th>
      <th>Price</th>
    </tr>
  <% for product in @products %>
    <tr>
      <td><%= check_box_tag "product_ids[]", product.id %></td>
      <td><%=h product.name %></td>
      <td><%=h product.category.name %></td>
      <td><%= number_to_currency product.price %></td>
      <td><%= link_to "Edit", edit_product_path(product) %></td>
      <td><%= link_to "Destroy", product, :confirm => 'Are you sure?', :method => :delete %></td>
    </tr>
  <% end %>
  </table>
  <p>
    <%= select_tag :field, options_for_select([["All Fields", ""], ["Name", "name"], ["Price", "price"], ["Category", "category_id"], ["Discontinued", "discontinued"]]) %>
    <%= submit_tag "Edit Checked" %>
  </p>
<% end %>

请注意，您也可以在formtastic中使用form_for帮助器。

更新

如果您也喜欢使用嵌套属性，那么应该开箱即用，在表单partial上使用fields_for。让我们继续使用railscast示例，并说明：

product.rb

has_many :commments
accepts_nested_attributes_for :comments

您可以编辑产品_fields.html.erb上的注释，如下所示：

<%= f.fields_for :comments do |cf| %>
  <%=render 'comments/fields', :f=>cf%>
<%end%>

并确保您的注释视图中有字段部分。