For the life of me, I can\'t figure out how to pre-populate a BooleanField with WTForms. I have a field called \"active\". It defaults to being not checked, and it\'s not requ
This worked for me
BooleanField(default="checked")
https://wtforms.readthedocs.io/en/2.3.x/fields/
class wtforms.fields.BooleanField(default field arguments, false_values=None)