authentication - Rails nil value when saving to database -

I am trying to implement a user authentication system inside the rail, this is my model:

  class users & lt; ActiveRecord :: Base attr_accessible: id,: email ,: name ,: password, made_it ,: updated_at has_secure_password before_save {email.downcase! } Valid: Email, Attendance: True ,: Specification = & gt; {: Case_senstive = & gt; Running in the console I can successfully read the user table, then when I try to make a record:  
  User.new (: name = & gt; "A" ,: Email = & Gt; "a @ aa" ,: password = & gt; "password")   
 is running  valid  back to it  true < / Code>, but when I save the record I get an error:  
  Users can not tap.   
  password  Removing  hash  works fine.  
 What's the problem?  
 Thanks   
 
 
 You : password_confirmation ? You need this from the example given in Docs.