我试图通过嵌套在父模型中的表单添加has_many_through关系。我无法弄清楚这是否可能?通过复选框以嵌套的形式处理has_many
没有复选框,嵌套窗体工作正常。当这些复选框位于嵌套表单之外时,它们可以正常工作。
= semantic_form_for @raduser do |f|
%ul
%li
= f.text_field :expiration, :placeholder => 'Expiration Date', :id => 'expiration_date'
- f.fields_for :radcheck do |builder|
= builder.text_field :username, :placeholder => 'Stuff'
-Radgroup.all.each do |group|
%li
= check_box_tag 'radcheck[radgroup_ids]', group.id, @radcheck.radgroup_ids.include?(group.id)
= group.groupname
%li
= f.submit
这将引发一个错误:
undefined method `radgroup_ids' for #<ActiveRecord::Relation:0x007faaa24c2468>
我得建立模型罚款,我认为所有的值保存完美未经复选框
---编辑模型中加入 - -
Radusers有许多Radcheck(单数由于遗留数据库)。 Radcheck通过radusergroup有许多radgroups。
class Raduser < ActiveRecord::Base
has_many :radcheck, :dependent => :destroy
accepts_nested_attributes_for :radcheck, :reject_if => lambda { |a| a[:value].blank? }, :allow_destroy => true
end
class Radcheck < ActiveRecord::Base
self.table_name = 'radcheck'
attr_accessible :attribute_name, :username, :value, :op, :radgroupcheck_id, :radcheck_serial, :radgroup_ids
belongs_to :raduser
has_many :radusergroup, :dependent => :destroy
has_many :radgroup, :through => :radusergroup
end
class Radgroup < ActiveRecord::Base
self.table_name = 'radgroup'
has_many :radusergroup, :dependent => :destroy
has_many :radcheck, :through => :radusergroup
end
class Radusergroup < ActiveRecord::Base
belongs_to :radcheck
belongs_to :radgroup
end
- 更新两个 -
def new
@radcheck = Radcheck.new
...
end
def create
@radcheck = Radcheck.new(params[:radcheck])
...
end
--- UPDATE 3 ---
我的数据库目前看起来是这样的:
+----------------+-----------------------+----------+------+
| radcheck_id | radgroup_id | priority | id |
+----------------+-----------------------+----------+------+
| 8 | 3 | 1 | 1 |
| 4 | 9 | 0 | 2 |
| 22 | 4 | 1 | 3 |
| 2 | 6 | 1 | 4 |
我有解决方案建议在下面工作。
我希望做的是插入radcheck_username和radgroup_groupname到数据库,而不是radcheck_id:
+----------------+-----------------------+----------+------+
| ...username | --groupname | priority | id |
+----------------+-----------------------+----------+------+
| user123344 | group88888 | 1 | 1 |
| shushQb | 30-minutes | 0 | 2 |
| forty | gigiig | 1 | 3 |
| snang | ps-staff | 1 | 4 |
这可能吗?
如果可能,需要查看您的模型。 – Ryan 2012-02-05 08:26:29
@Ryan,刚刚更新了我的问题。谢谢 – simonmorley 2012-02-05 11:32:24
A ** has_many:通过**不会生成** something_ids **方法。为什么你有这个** Radusergroup **类?有没有任何有用的信息,或只是ID? – 2012-02-05 13:30:43