Rails 2.3.8 has_many :至

Question

我有3张表/课

   vectors, b_cells and transfections

它们是这样关联的

    class BCell
    has_and_belongs_to_many :vectors ( JOIN ) 

    class Transfection
    has_and_belongs_to_many :vectors ( JOIN )

如何使用关联将b_cells和转染连接起来？我试过了

    class BCell
    has_many :transfections, :through => :vectors

    class Transfection
    has_many :b_cells, :through => :vectors

我使用的是rails 2.3.8

Answer 1

我认为您在模型声明方面有问题。你能试试这个吗?看看能不能用？

class BCell < ActiveRecord::Base
    has_many :vectors 
    has_many :transfections, :through => :vectors
end

class Transfection < ActiveRecord::Base
    has_many :vectors
    has_many :b_cells, :through => :vectors
end

class vectors < ActiveRecord::Base
    belongs_to :b_cell
    belongs_to :transfection
end