ruby-on-rails - DEPRECATION WARNING: Passing options to #find is deprecated

Question

In my message model I have method to read a message, I use it in Message Controller. But something's worng with this method because when i run the tests i have error:

DEPRECATION WARNING: Passing options to #find is deprecated. Please build a scope and then call #find on it. (called from readingmessage at /home/mateusz/rails4/Bloggers/app/models/message.rb:21)

This is my method:

def self.readingmessage(id, reader)
 message = find(id, :conditions => ["sender_id = ? OR recepient_id = ?",    reader,  reader])
if message.read_at.nil? && (message.recepient.id==reader)
  message.read_at = Time.now
  message.save!
end
  message
end

Answer 1

您将where改为使用：

message = where("sender_id = ? OR recepient_id = ?", reader, reader).find(id)

Answer 2

听起来就像我用来构建消息传递系统的教程一样。而不是仅仅findor where（它只会检索一个活动的关系对象），做：

self.find(id, :conditions => ["sender_id = ? OR recepient_id = ?", reader, reader])

Answer 3

尝试 arel 语法：

message = where('sender_id = ? OR recepient_id = ?', reader, reader).find(id)

值得一看： http: //guides.rubyonrails.org/active_record_querying.html