当我尝试提交下面的表格时,我收到了这个错误WARNING: Can't mass-assign protected attributes: sub_category
。我试图在 stackoverflow 上解决以前提出的相关问题,似乎我在正确的轨道上,但由于某种原因,我仍然遇到同样的错误,什么是我做错了吗?我已经包含了下面的所有信息,提前谢谢你。
查看/表格
<%= form_for @ip ,:url=>{:action =>"create"} do |f| %>
<%=f.text_field :email %>
<% f.text_field :ip_address %>
<%= f.fields_for :sub_category do |s| %>
<%=s.text_field :name%>
<%end%>
<%=f.submit "submit" %>
<%end%>
控制器
def create
@ips=Ip.new(params[:ip])
@ip=@ips.sub_categories.build
if @ip.save
redirect_to :controller=>"home" ,:action=>"index"
else
render 'index'
end
楷模
class Ip < ActiveRecord::Base
has_many :sub_categories ,:through=>:ip_subs
has_many :ip_subs
accepts_nested_attributes_for :sub_categories
attr_accessible :sub_categories_attributes,:ip_address,:email,:ip_count
end
class SubCategory < ActiveRecord::Base
has_many :ip ,:through=>:ip_subs
has_many :ip_subs
end
class IpSub < ActiveRecord::Base
belongs_to :ip
belongs_to :sub_category
end