ActiveRecord 使用 Includes 连接表

Question

如何使用 Ruby ActiveRecord 执行上面的查询？

SELECT p.name, c.ios FROM public.projects p
INNER JOIN public.controls c
ON c.company_id = p.company_id

我试过了

Project.includes(company::controls)
Project.joins(:company => controls)

但都失败了

Project Model: { id, name, company_id, type, created_at, updated_at }
Company Model: { id, name, created_at, updated_at }
Control Model: { id, ios, android, macos, company_id, created_at, updated_at}

Answer 1

如果它是 INNER JOIN，您需要 table1: :table2，假设您的模型是正确的，您需要以下内容

Project.includes(company: :controls)
Project.joins(company: :controls)

ActiveRecord 使用 Includes 连接表

ActiveRecord join tables with Includes

ruby-on-rails

ruby

activerecord