ruby-on-rails - 有许多通过复选框不保存值 Rails3

Question

我已经在我的数据库中设置了一个 has_many through 关系并更改了 key ，因为我正在使用旧版数据库。

一切似乎都正常，但我无法将复选框保存到数据库中。

我的模型如下:

class Radcheck < ActiveRecord::Base
  set_table_name 'radcheck'
  attr_accessible :attribute_name, :username, :value, :op, :groupname
  belongs_to :raduser

  has_many :radusergroup, :dependent => :destroy, :primary_key => :username, :foreign_key => :groupname
  has_many :radgroupcheck, :through => :radusergroup
end


class Radgroupcheck < ActiveRecord::Base
  set_table_name 'radgroupcheck'
  has_many :radusergroup, :dependent => :destroy#, :primary_key => :groupname, :foreign_key => :username
  has_many :radcheck, :through => :radusergroup
end


class Radusergroup < ActiveRecord::Base
  belongs_to :radcheck, :foreign_key => 'groupname', :primary_key => 'username'
  belongs_to :radgroupcheck, :foreign_key => 'username', :primary_key => 'groupname'
end

在我的表格中，我有这个:

<% Radgroupcheck.all.each do |group| -%>
  <%= check_box_tag :groupnames, group.id, @radcheck.radgroupcheck.include?(group), :username => 'radcheck[groupname][]' -%> | <%= label_tag :groupnames, group.groupname -%>
<% end -%>

表单可以正常显示复选框，我可以看到组名，但是当我点击保存时没有任何反应。

开发日志清晰，mysql查询日志也看不到。

Answer 1

尝试在您的表单中使用它:

<% Radgroupcheck.all.each do |group| -%>
  <%= check_box_tag "radcheck[radgroupcheck_ids][]", radgroupcheck.id, @radcheck.radgroupchecks.include?(radgroupcheck), :id => "radcheck_radgroupcheck_id_#{radgroupcheck.id}" -%>
  <%= label_tag "radcheck[radgroupcheck_ids][]", radgroupcheck.name, :for => "radcheck_radgroupcheck_id_#{radgroupcheck.id}" -%>
<% end %>

在你的 Controller 中:

def create
  params[:radcheck][:radgroupcheck_ids] ||= []
  @radcheck = Radcheck.new(params[:radcheck])

  # rest of your controller logic
end

这改编 self 在 Rails 3.1 项目中的工作，基于 http://railscasts.com/episodes/17-habtm-checkboxes?view=asciicast