devise: not requiring email

Question

I would like to NOT require email for signing in using devise. I removed email from config/initializers/devise.rb:

config.authentication_keys = [ :login ]
         


        

Answer 1

It looks like you have the email field set in the database as "not NULL" or "Allow Null" to false. And you are getting an error directly from the database. Assuming that your user model is called user you need to add the fallowing migration to fix that:

change_column :users, :email, :string, :null => true 

Documentation: http://apidock.com/rails/ActiveRecord/ConnectionAdapters/SchemaStatements/change_column