New users all defaulting to admin: true

I can't work out how to set admin to false as a default for new users

Tried my own method in the User.rb model to work after_initialize: but no luck

Any suggestions Chris Oliver ?

Also tried in User.rb:

attribute :admin, :boolean, default: false

which didn't work either

Bump? Anyone?

It's null by default which is falsey. Edit the migration if you want to make it explicit, but there's no need to.

Many thanks