无法嵌套JSON Rails
我无法通过通过轨道关系嵌套具有has_many的对象。
我的模型如下所示：
class SessionDetail < ActiveRecord::Base
has_many :session_enrollments, dependent: :destroy
has_many :customers, through: :session_enrollments
end
class SessionEnrollment < ActiveRecord::Base
belongs_to :customers //column name is "customers_id"
belongs_to :session_details //column name is "sessiondetails_id"
end
class Customer < ActiveRecord::Base
has_many :session_enrollments
has_many :session_details, through: :session_enrollments
end
我试图嵌套一个json对象来返回一个会话详细数组，一个客户的子数组和一个session_enrollments的子数组（一个对象）
我的控制器当前如下所示：
def return_trainers_sessions
@trainer_requests = SessionDetail.where(trainers_id: params[:trainers_id], state: "PENDING")
unless (!@trainer_requests.any?)
respond_to do |format|
msg = {:status => "SUCCESS", :messages => "Requests Found", :requests => @trainer_requests.as_json(:includes => {:customers => {:include =>:session_enrollments}})}
format.json { render :json => msg } # don't do msg.to_json
end
我也尝试过制作课堂教学方法，但只能尽可能地嵌套客户。
我最终没有返回客户或session_enrollments，所以我的json看起来像我从来没有将包含添加到.as_json的右侧
注意你的复数形式。
class SessionDetail < ActiveRecord::Base
has_many :session_enrollments, dependent: :destroy
has_many :customers, through: :session_enrollments
end
# a session enrollment belongs to a single customer, and a single session detail. Similarly
# the foreign key fields should be singular, customer_id, session_detail_id
class SessionEnrollment < ActiveRecord::Base
belongs_to :customer
belongs_to :session_detail
end
class Customer < ActiveRecord::Base
has_many :session_enrollments
has_many :session_details, through: :session_enrollments
end