我已经看到了几个同样问题的问题,例如
通过Active Admin使用HABTM或Has_many
但我仍然在努力让事情发挥作用(此时我已尝试过多种方式).
我的模型(稍微复杂于用户模型的'技术员'别名):
class AnalysisType < ActiveRecord::Base
has_many :analysis_type_technicians, :dependent => :destroy
has_many :technicians, :class_name => 'User', :through => :analysis_type_technicians
accepts_nested_attributes_for :analysis_type_technicians, allow_destroy: true
end
class User < ActiveRecord::Base
has_many :analysis_type_technicians, :foreign_key => 'technician_id', :dependent => :destroy
has_many :analysis_types, :through => :analysis_type_technicians
end
class AnalysisTypeTechnician < ActiveRecord::Base
belongs_to :analysis_type, :class_name => 'AnalysisType', :foreign_key => 'analysis_type_id'
belongs_to :technician, :class_name => 'User', :foreign_key => 'technician_id'
end
我已经为AnalysisType模型注册了一个ActiveAdmin模型,并且希望能够选择(已经创建)技术人员以在下拉列表/复选框中与该AnalysisType相关联.我的ActiveAdmin设置目前看起来像:
ActiveAdmin.register AnalysisType do
form do |f|
f.input :analysis_type_technicians, as: :check_boxes, :collection => User.all.map{ …