Question

我有嵌套模型如下

Project模型has_many关键字和关键字belongs_to项目

  class Project < ActiveRecord::Base

   has_many :url_list
   has_many :keyword
   accepts_nested_attributes_for :keyword, :allow_destroy => true
  end

  class Keyword < ActiveRecord::Base
   belongs_to :project
   attr_accessible :kw, :project_id 
  end

查看：

  <%=form_for @project, :multipart => true do |f|%>
        <ul><li style = "width:85px; text-align: right; margin-right:5px; margin-top:5px"><%= f.label :name%></li>
        <li><%= f.text_field :name, :class => "txt_box1"%></li></ul>
        <ul><li style = "width:85px; text-align: right; margin-right:5px; margin-top:5px"><%= f.label :request_id %></li> 
        <li><%= f.text_field :request_id, :class => "txt_box1" %></li></ul>
        <ul><li style = "width:85px; text-align: right; margin-right:5px; margin-top:5px"><%= f.label :file%></li>
        <li><%= f.file_field :uploaded_file%></li></ul>

        <%= f.fields_for :keywords do |k|%> 
        <ul><li style = "width:85px; text-align: right; margin-right:5px; margin-top:5px"><%= k.label "keyword1" %></li>

        <li><%= k.text_field :kw, :class => "txt_box1" %></li></ul>


        <%end%>
        <ul><li style="width:85px; text-align: right; margin-right:5px; margin-top:5px">&nbsp;</li>
        <li style="opacity: 0.8;"><div class="space"><%= f.submit "Submit", :class=> "button"%></div></li></ul>
        <%end%>

我无法保存keywords虽然它可以保存project但我可能出错了？

关键字架构

   class CreateKeywords < ActiveRecord::Migration
   def change
   create_table :keywords do |t|
    t.string :kw
    t.integer :project_id

  t.timestamps
  end
  end
  end

Answer 1

在您的项目模型中尝试此操作：

has_many :keywords
accepts_nested_attributes_for :keywords, :allow_destroy => true

关键字 - 因为您有 has_many 关联。

如果它不起作用，请在log / development.log中检查你的参数 - 你应该有这样的东西：“keywords_attributes”=＆gt; {“title”=＆gt;“”......“}

查看此页面：http://api.rubyonrails.org/classes/ActiveRecord/NestedAttributes/ClassMethods.html

嵌套属性不保存在Rails 3.1中

1 个答案: