2016-05-10 150 views
0

我有兩個模型,它們都有has_and_belongs_to_many彼此關聯。Rails 5 Active Record has_and_belongs_to_many

訂購

class Order < ApplicationRecord 
# Has multiple related rates. 
    has_and_belongs_to_many :rates 

class Rate < ApplicationRecord 
    has_and_belongs_to_many :orders 

率包含給定日期的貨幣數據,而訂單包含的最後期限。根據訂單的截止日期,我有一份工作,創建並提取(today..deadline) - 1年之間的所有日期。

工作

def perform(order_record) 
    (all_dates << history_weeks).flatten! 
     all_dates.each do |date| 
      r = Rate.find_by(date: date) 
      if r == nil 
      r = Rate.new(date: date) 
      r.save 
      end 

      q = r.update(orders << order_record) 
     end 

現在的事情是,爲有史以來第一次下令我創造,一切順利,該協會已正確,這樣我可以通過@order.rates訪問率。第二,每一個訂單,我創建沒有做到這一點,儘管登陸以下,但只有一次:

Rate Load (0.0ms) SELECT "rates".* FROM "rates" INNER JOIN "orders_rates" ON "rates"."id" = "orders_rates"."rate_id" WHERE "orders_rates"."order_id" = ? ORDER BY "rates"."id" ASC LIMIT ? [["order_id", 4], ["LIMIT", 1]]

我在做什麼錯在那裏?

編輯:

作業名爲在orders_controller:

def create 
    @order = Order.new(order_params) 
    @order.user = User.find(current_user) 

    respond_to do |format| 
    if @order.save 
     GetCurrencyHistoryJob.perform_now(@order) 
     format.html { redirect_to @order, notice: 'Order was successfully created.' } 
     format.json { render :show, status: :created, location: @order } 
    else 
     format.html { render :new } 
     format.json { render json: @order.errors, status: :unprocessable_entity } 
    end 
    end 
end 
+0

你能後,你所說的工作 –

回答

0

我從來沒有見過r.update(orders << order_record)

我始終認爲,語法是

r.orders << order_record 

你也可以收拾這個

r = Rate.find_by(date: date) 
if r == nil 
    r = Rate.new(date: date) 
    r.save 
end 

r = Rate.find_or_create_by(date: date) 
+0

'r.orders << order_record'產生完全相同的結果代碼:第一個推出精,接下來的人不。 –