Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

Python A Social Network with Flask Takin' Names Flask-WTF Forms


In this video forms.py line 9:

 if User.select().where(User.username == field.data).exists():

Is the "data" in field.data a variable, or it is just a function in flask?

1 Answer

Chris Freeman
Chris Freeman
Treehouse Moderator 67,982 Points

Hey jun cheng wong, data is the field attribute that “Contains the resulting (sanitized) value of calling either of the process methods. Note that it is not HTML escaped when using in templates.

Post back if you need more help. Good luck!!!

thanks chris