ruby-on-rails - 在Rails控制台中抑制SQL输出的简单方法？

Question

我经常需要使用rails c在Rails控制台上运行。然后，我运行一些语句，该语句遍历模型的记录。我需要输出信息，但是所有的SQL代码也会变得乱七八糟。喜欢:

Students.all.each {|s| puts s.inspect unless s.attendance};nil

我把那个 nil放在最后，这样我就不会收到所有学生的丑陋转储。这是输出:

  Student Load (4.3ms)  SELECT "students".* FROM "students"
  Attendance Load (3.6ms)  SELECT "attendances".* FROM "attendances" WHERE "attendances"."id" = 2694 LIMIT 1
  Attendance Load (2.7ms)  SELECT "attendances".* FROM "attendances" WHERE "attendances"."id" = 2695 LIMIT 1
  Attendance Load (4.9ms)  SELECT "attendances".* FROM "attendances" WHERE "attendances"."id" = 2689 LIMIT 1
#<Student id: 3, attendance_id: 2689, teacher_id: 6, began_at: "2013-05-21 19:16:37", finished_at: "2013-05-21 20:34:33", created_at: "2013-05-21 19:16:37", updated_at: "2013-05-21 20:34:33">
  Attendance Load (2.0ms)  SELECT "attendances".* FROM "attendances" WHERE "attendances"."id" = 2692 LIMIT 1
#<Student id: 26, attendance_id: 2713, teacher_id: 6, began_at: "2013-05-21 22:44:25", finished_at: "2013-05-21 22:44:42", created_at: "2013-05-21 22:44:25", updated_at: "2013-05-21 22:44:42">
  Attendance Load (1.6ms)  SELECT "attendances".* FROM "attendances" WHERE "attendances"."id" = 2714 LIMIT 1
#<Student id: 27, attendance_id: 2714, teacher_id: 3, began_at: "2013-05-21 22:45:06", finished_at: "2013-05-21 22:45:27", created_at: "2013-05-21 22:45:06", updated_at: "2013-05-21 22:45:27">
  Attendance Load (4.0ms)  SELECT "attendances".* FROM "attendances" WHERE "attendances"."id" = 2712 LIMIT 1

在这里，实际上还算不错，但是有时仍然很难看清我想要的东西。抑制SQL输出的简便方法？

Answer 1

在控制台中输入此内容，或将其放入控制台的配置文件中:

ActiveRecord::Base.logger = nil