I currently am creating a dynamic select field using WTFORMS, however it never submits and fails the validation with the following error.
Not a valid choice
My Field is created like this:
area = SelectField()
and in the view, i am grabbing the options from the db like so:
form = MytestForm()
form.area.choices = [(a.id, a.name) for a in Area.objects.all()]
It works however if i create static options.
My guess is that Area.id
is a int
- when data comes back from the client it is treated as a string by WTForms unless a callable is passed to the coerce
keyword argument of the wtforms.fields.SelectField
constructor:
area = SelectField(coerce=int)
Alternately, if you are using SQLAlchemy you could use wtforms.ext.sqlalchemy.fields.QuerySelectField
(wtforms_sqlalchemy
if you are using WTForms 3+):
area = QuerySelectField(query_factory=Area.objects.all,
get_pk=lambda a: a.id,
get_label=lambda a: a.name)