本文介绍了如何将记录添加到 has_many :通过 rails 中的关联的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
class Agents << ActiveRecord::Base
belongs_to :customer
belongs_to :house
end
class Customer << ActiveRecord::Base
has_many :agents
has_many :houses, through: :agents
end
class House << ActiveRecord::Base
has_many :agents
has_many :customers, through: :agents
end
如何为 Customer
添加到 Agents
模型?
How do I add to the Agents
model for Customer
?
这是最好的方法吗?
Customer.find(1).agents.create(customer_id: 1, house_id: 1)
以上在控制台上工作正常,但是我不知道如何在实际应用程序中实现这一点.
The above works fine from the console however, I don't know how to achieve this in the actual application.
假设为客户填写了一个表单,该表单也将 house_id
作为输入.那么我是否在我的控制器中执行以下操作?
Imagine a form is filled for the customer that also takes house_id
as input. Then do I do the following in my controller?
def create
@customer = Customer.new(params[:customer])
@customer.agents.create(customer_id: @customer.id, house_id: params[:house_id])
@customer.save
end
总的来说,我对如何在 has_many :through
表中添加记录感到困惑?
Overall I'm confused as to how to add records in the has_many :through
table?
推荐答案
我认为你可以简单地这样做:
I think you can simply do this:
@cust = Customer.new(params[:customer])
@cust.houses << House.find(params[:house_id])
或者在为客户建造新房子时:
Or when creating a new house for a customer:
@cust = Customer.new(params[:customer])
@cust.houses.create(params[:house])
您也可以通过 id 添加:
You can also add via ids:
@cust.house_ids << House.find(params[:house_id])
这篇关于如何将记录添加到 has_many :通过 rails 中的关联的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!