多个belongs_to关系到三个模型
情况是这样的..
class Organization < ActiveRecord::Base
has_many :role_memberships
has_many :roles
has_many :users, :through => :role_memberships, :uniq => true
end
class User
has_many :role_memberships
has_many :organizations, :through => :role_memberships, :uniq => true
has_many :roles, :through => :role_memberships, :uniq => true
end
class RoleMembership < ActiveRecord::Base
belongs_to :organization
belongs_to :role
belongs_to :user
end
class Role < ActiveRecord::Base
belongs_to :organization
has_many :role_memberships
has_many :users, :through => :role_memberships, :uniq => true
end
问题是如何填充角色成员表中的所有三个外键..当我执行 org.users.push(u) 时，这会创建一条记录，但 role_id 被遗漏了...
The situation is this way..
class Organization < ActiveRecord::Base
has_many :role_memberships
has_many :roles
has_many :users, :through => :role_memberships, :uniq => true
end
class User
has_many :role_memberships
has_many :organizations, :through => :role_memberships, :uniq => true
has_many :roles, :through => :role_memberships, :uniq => true
end
class RoleMembership < ActiveRecord::Base
belongs_to :organization
belongs_to :role
belongs_to :user
end
class Role < ActiveRecord::Base
belongs_to :organization
has_many :role_memberships
has_many :users, :through => :role_memberships, :uniq => true
end
The QUESTION is how do I populate all the three foreign-keys in rolemembership table..when I do org.users.push(u) this create a record but role_id is left out...
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在这种情况下，我可能会创建 RoleMembership 对象本身，如下所示：
In this case I will probably create RoleMembership object itself, like this: