Rails: Prevent duplicate inserts due to pressing back button and save again

Question

Think about a simple Rails scaffold application with a \"new\" action containing a form to add records to a database with a \"save\" button. After the \"create\" action the

Answer 1

You can use validators to make sure that no duplicate values are inserted. In this case validates_uniqueness_of :field

If you for example want to prevent users from having the same email address you could put the following code in your user model.

validates_uniqueness_of :email

This checks the column for any previous entries that are the same as the one your trying to inert. Good luck