嵌套属性在Rails的节省3.1
问题描述:
我有嵌套模型如下嵌套属性在Rails的节省3.1
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"> </li>
<li style="opacity: 0.8;"><div class="space"><%= f.submit "Submit", :class=> "button"%></div></li></ul>
<%end%>
我不能救keywords
虽然这是节省project
我可能会出错?
关键字图
class CreateKeywords < ActiveRecord::Migration
def change
create_table :keywords do |t|
t.string :kw
t.integer :project_id
t.timestamps
end
end
end
答
试试这个在您的项目模型:
has_many :keywords
accepts_nested_attributes_for :keywords, :allow_destroy => true
关键字 - 因为你有的has_many关联。
如果它不工作,检查日志/ development.log您的PARAMS - 你应该有这样的事情: “keywords_attributes”=> { “标题”=>” “...”}
看看这个网页:http://api.rubyonrails.org/classes/ActiveRecord/NestedAttributes/ClassMethods.html
欣赏你的回应,帮助! – 2012-01-31 14:58:29