这些是我的模特:
class Person < ActiveRecord::Base
has_many :honors, :dependent => :destroy, :foreign_key => "honored_id"
has_many :honor_creators, :through => :honors, :source => :person, :foreign_key => "person_id"
class Group
has_many :honorss,:foreign_key => "group_id"
class Honor
belongs_to :person, :class_name => 'Person', :foreign_key => "person_id"
belongs_to :honored, :class_name => 'Person', :foreign_key => "honored_id"
belongs_to :group, :class_name => 'Group', :foreign_key => "group_id"
由于honors
显示在person#show
页面,因此这是我的控制器:
def show
...
@honors = @person.honors.paginate(:page => params[:page], :per_page => Honor.per_page)
end
我的观点:
<% unless @honors.empty? %>
<% @honors.each do |ho| %>
我的问题是:使用ho
我获得了honor
的所有属性,但我希望得到荣誉的创建者及其所属的群体。我怎么能这样做?
谢谢!
答案 0 :(得分:1)
您可以通过访问
来实现ho.person
或
ho.group
答案 1 :(得分:0)
注意:
belongs_to :group, :class_name => 'Group', :foreign_key => "group_id"
和
belongs_to :group
会做同样的事情,因为当你给它:group
时,Rails会假设该类和外键。
让ho.honor_creator
工作(如果我假设正确),您需要:
class Person < Model
has_many :honors, :foreign_key => :creator_id
end
class Honor < Model
belongs_to :creator, :class_name => "Person"
end
这样,您可以设置honor.creator_id = params[:user_id]
,然后使用ho.creator
访问此人。
换句话说,我会像这样重做你的模型:
class Person < ActiveRecord::Base
belongs_to :honor, :foreign_key => :recipient_id
has_many :honors, :foreign_key => :creator_id
class Group
has_many :honors
class Honor
has_many :recipients, :class_name => 'Person' # recipient_id is assumed
belongs_to :creator, :class_name => 'Person' # creator_id is assumed
belongs_to :group # group_id is assumed
我重新命名了一些专栏,希望能有更好的理解,这是我的头脑,所以我会看一些参考来确保我的准确性。
这样,您就可以访问honor.creator
和honor.group
。
<% @honors.each do |honor| %>
Honor Creator: <%= honor.creator.name %>
Honor Group: <%= honor.group.name %>
Honor Recipients: <% honor.recipients.each {|recipient| puts recipient} %>
<% end %>
可能搞砸了收件人协会,但我会去看看。