有人可以给我一个使用mongoid的嵌套形式的工作实例吗？
我的型号：
class Employee include Mongoid::Document field :first_name field :last_name embeds_one :address end class Address include Mongoid::Document field :street field :city field :state field :post_code embedded_in :employee,:inverse_of => :address end
解决方法
您的型号：
class Employee
include Mongoid::Document
field :first_name
field :last_name
embeds_one :address
# validate embedded document with parent document
validates_associated :address
# allows you to give f.e. Employee.new a nested hash with attributes for
# the embedded address object
# Employee.new({ :first_name => "First Name",:address => { :street => "Street" } })
accepts_nested_attributes_for :address
end
class Address
include Mongoid::Document
field :street
field :city
field :state
field :post_code
embedded_in :employee,:inverse_of => :address
end
你的控制器：
class EmployeesController < ApplicationController
def new
@employee = Employee.new
# pre-build address for nested form builder
@employee.build_address
end
def create
# this will also build the embedded address object
# with the nested address parameters
@employee = Employee.new params[:employee]
if @employee.save
# [..]
end
end
end
你的模板：
# new.html.erb
<%= form_for @employee do |f| %>
<!-- [..] -->
<%= f.fields_for :address do |builder| %>
<table>
<tr>
<td><%= builder.label :street %></td>
<td><%= builder.text_field :street %></td>
</tr>
<!-- [..] -->
</table>
<% end %>
<% end %>
这应该适合你！
朱利安