WTForms default values by current_user flask-login

Question

I'm trying to make a few inputs have a default value retrieved from MongoDB, using mongoengine.

But when I'm trying to set a default value like this...

# Edit form (wtform)
class EditForm(FlaskForm):
    firstname = StringField('First name', default = current_user.firstname)
    ...

... I get an error:

AttributeError: 'NoneType' object has no attribute 'firstname'

How do I solve this issue?

Can I somehow pass "current_user.firstname" by value in .html file?:

{{ form.firstname(class_='form-control', placeholder_='First name', value_='current_user.firstname') }}
{{ form.firstname.label(for_='firstname') }}

Answer 1

I found the solution by myself. For future reference, all I had to do was to remove '' from value_:

{{ form.firstname(class_='form-control', placeholder_='First name', value_=current_user.firstname) }}
{{ form.firstname.label(for_='firstname') }}