rails 5.2
、ruby 2.6.4
Student
记录具有以下字段,部分为:
fname,
lname,
emplid,
class_code,
...
class_code是一个数字1,2,3,4。
1 = freshman
2 = sophomore
3 = junior
4 = senior
我有一个验证:
validates_inclusion_of :class_code, :in => Constants::CLASS_CODES,
message: "The class code, %{value}, is not considered a valid class code."
这是有效的,但如果我能说出这个错误发生在哪个学生记录上,那将非常有帮助。我想在错误消息中添加字段emplid
。这可能吗?
类似于:
message: "For student {emplid}, %{value} is not considered a valid class code."
谢谢你的提示。
您可以将lambda传递给message
。
validates_inclusion_of :class_code, :in => Constants::CLASS_CODES,
message: ->(student, options) { "For student #{student.emplid}, #{options[:value]} is not considered a valid class code." }