如何使用哈希从数据库中的另一个记录创建的哈希在数据库中创建记录

Question

I am having two rails systems, on one system I created a record using active record. Now I am converting that object to a Hash using attributes method like this user_hash = @user.attributes and sending it to other rails system.
Now I want to create user record on this system with this hash. The problem I am facing is that "id" field in database, how to override that field.
is there any way to solve this?

Answer 1

you can use clone also

# rails < 3.1
new_record = old_record.clone

#rails >= 3.1
new_record = old_record.dup

Returns a clone of the record that hasn't been assigned an id yet and is treated as a new record.

Answer 2

user_hash = @user.attributes
user_hash = ["id", "created_at", "updated_at"].each{ |k| user_hash.delete(k) }