rails 4：按包含字段查找

Question

在 Rails 3 我有这个查询：

Supporter.includes(:person).where("concat(club_member_number, ' ', people.surname, ' ',  people.name) LIKE ?", term)

但是在 Rails 4 中，它出现了一个错误：

ActiveRecord::StatementInvalid Exception: Mysql2::Error: Unknown column 'person.surname'

我如何更改它在 Rails 4 中工作的查询？

Answer 1

尝试关注

Supporter.eager_load(:person).where("concat(club_member_number, ' ', people.surname, ' ',  people.name) LIKE ?", term)

或将 references(:person) 与 includes

一起使用

Supporter.includes(:person).where("concat(club_member_number, ' ', people.surname, ' ',  people.name) LIKE ?", term).references(:person)

参考this

rails 4: find by includes field