我怎样才能获得.any的价值？什么时候真的？ - 铁路

Question

@comment.body.scan(/@(\w+)/).flatten.to_a.each do|username|
   if @mentioned = User.where(:username => username).any?
    #@mentioned value??
   end
end

如何在真正的

时获得@ mentioned的值

Answer 1

您想通过用户名获取User并检查是否有用户名吗？

@comment.body.scan(/@(\w+)/).flatten.to_a.each do|username|
   @mentioned = User.find_by_username(username)

   if !@mentioned.blank?
    # @mentioned is a User model instance.
    @mentioned.username  == username             # => true
   end
end