Railscast 198，但使用formtastic [英] Railscast 198, but using formtastic

问题描述

你怎么能够完成 RyanB的Railscast 中的内容使用Formtastic单独编辑多个记录？ Formtastic不使用form_tag，RyanB的方法依赖于form_tag。 semantic_form_for 仅仅是 > form_for ，所以你可以使用相同的参数。这里是瑞安贝茨的屏幕录像的形式化版本。

views / products / edit_individual.html.erb

 <％semantic_form_for：update_individual_products，：url => update_individual_products_path，：method => ：把do | f | ％GT; 
 <@products％中产品的百分比>> 
 <％f.fields_forproducts []，product do | ff | ％GT; 
< h2><％= h product.name％>< / h2> 
 <％=呈现字段，：：f => ff％> 
<％end％> 
<％end％> 
< p><％= submit_tag提交％>< / p> 
<％end％> 
  

views / products / index.html.erb

 <％semantic_form_for：edit_individual_products，：url => edit_individual_products_path do％> 
< table> 
< tr> 
< th>< / th> 
< th>名称< / th> 
第< th>类别< / th> 
 Price< th> 
< / tr> 
 <@products％中产品的百分比>> 
< tr> 
< td><％= check_box_tagproduct_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编辑，edit_product_path（product）％>< / td> 
< td><％= link_toDestroy，product，：confirm => '你确定吗？'，：method => ：删除％>< / td> 
< / tr> 
<％end％> 
< / table> 
< p> 
 <％= select_tag：field，options_for_select（[[All Fields，]，[Name，name]，[Price，price]，[Category category_id]，[Discontinued，discontinued]]）％> 
 <％= submit_tag编辑选中％> 
< / p> 
<％end％> 
  

请注意，您可以使用 form_for 帮助者以及 formtastic 。

更新

如果您也想使用嵌套属性，则应该使用表单部分中的fields_for。让我们坚持使用railscast示例并说：

product.rb

  has_many：commments 
 accepts_nested_attributes_for：comments 
  

您可以在_fields上编辑评论。产品的html.erb：

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

并确保您的评论视图中有部分字段。

How could you do what's covered in RyanB's Railscast on editing multiple records individually, using Formtastic? Formtastic doesn't use form_tag, which RyanB's method relies on.

解决方案

The semantic_form_for is just a wrapper around form_for so you can use the same parameters. Here is a formtastic version of Ryan Bates' screencast

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 %>

Please note that you can use the form_for helpers as well in formtastic.

Update

If you like to use nested attributes as well it should work out of the box, using fields_for on the form partial. Lets stick with the railscast example and say that:

product.rb

has_many :commments
accepts_nested_attributes_for :comments

You can edit the comments on the _fields.html.erb of the products like:

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

And make sure you have a fields partial in your comments views.

这篇关于Railscast 198，但使用formtastic的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！