如何使用 join 咨询 SQL 以及在何处查看 rails

Question

我有：

person 有很多雇员员工属于个人，有很多再融资再融资属于员工

Person 有一个名为 cpf (uniq) 的列 Employee 有一个名为 register

的列

我如何为一个 WHERE in view Refinancing return all registers this cpf?? 我正在尝试这个：

select * from refinancings join (employees)
                               on (refinancings.employee_id = employee.id)
                               join (people)
                               on (employees.person_id = people.id)
                               where (cpf = 111111)

但是，这个 return 这个 cpf 的所有再融资我需要全部注册这个cpf。怎么做到的？

在此之后我需要放在这里：

 <%= f.association :employee, collection: Employee.all, label_method: :register, value_method: :id, prompt: "Select a register" %>

CPF没关系，我在URL

Answer 1

我明白了！

SQL:

select * from funcionarios join (pessoas)
                           on (funcionarios.pessoa_id = pessoas.id)
                           where (cpf = '111.111.111-11')

Rails:

Funcionario.joins(:pessoa).where("pessoas.cpf" => params[:pesquisa_func_cpf])

如何使用 join 咨询 SQL 以及在何处查看 rails

How do consult SQL with join and where and put it in view on rails

sql

join

ruby-on-rails

where

ruby-on-rails-4