我正在创建一个每月定期付款的系统,因此我使用每当宝石
创建新的付款要求问题似乎出现在我的付款模式方法中,就在这里。
class Payment < ActiveRecord::Base
belongs_to :client
def monthly_payment
clients = Client.all
clients.each do |client|
Payment.create(month: Date.now, client_id: client.id)
end
end
end
在cron.log中,我收到NoMethodError,所以我在rails控制台中尝试了该方法,并出现了同样的错误:
NoMethodError: undefined method `monthly_payment' for Payment (call 'Payment.connection' to establish a connection):Class
模型有问题吗?
以下是付款架构:
create_table "payments", force: :cascade do |t|
t.date "date"
t.string "type"
t.date "month"
t.boolean "paid"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.integer "client_id"
end
答案 0 :(得分:5)
您必须使用类方法,而不是实例方法:
def self.monthly_payment # notice the self.
clients = Client.all
clients.each do |client|
Payment.create(month: Date.now, client_id: client.id)
end
end
所以你可以打电话给
Payment.monthly_payment # class method
# method that can be called only on the Payment class
而不是
Payment.where(some_condition).first.monthly_payment # instance method
# method that can be called only on an instance of the Payment class
有关它的有趣链接:http://www.railstips.org/blog/archives/2009/05/11/class-and-instance-methods-in-ruby/
答案 1 :(得分:0)
尝试将其定义为类方法,即
def Payment.monthly_payment
# etc.
end
抱歉格式不正确,我正在使用手机。