新手问题 \A [[:lower:]] 这个表达式中的:lower:是什么语法
lass Person < ApplicationRecord
validates_each :name, :surname do |record, attr, value|
record.errors.add(attr, 'must start with upper case') if value =~ /\A[[:lower:]]/
end
end
lass Person < ApplicationRecord
validates_each :name, :surname do |record, attr, value|
record.errors.add(attr, 'must start with upper case') if value =~ /\A[[:lower:]]/
end
end