Pre-populating a BooleanField as checked (WTForms)

Question

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

Answer 1

None of these solutions worked for me. There seems to be a bug in WTForms that has not been fixed.

Instead, when the route is called I set the value of the Boolean field after I have initialised the form. This works for me

form = GameCreateForm(request.form)
form.allow_comments.data = True

Answer 2

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)