No check for dupe email on user signup

[lewis-morris]

I'm struggling with this part, I will work out a way. I have tired to make a custom validator for marshmallow but still no luck.

But the server replies with this

body = Object {code: 400, description: "UNIQUE constraint failed: users.email", message: "Database integrity error"}

Instead of the correctly formatted errors object.

[miguelgrinberg]

Thanks, this should now be fixed.

[lewis-morris]

Can you tell me what you did, where so I can learn how to do this myself.

The book is great by the way !! Love it

[lewis-morris]

Of course, I've just compared the commits.