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2019-08-14T13:06:13Z

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=== How to get WTF results as Integer? ===

When data comes back from the client it is treated as a <big>string</big> by WTForms unless a callable is passed to the coerce keyword argument of the wtforms.fields.SelectField constructor:

area = SelectField(<big>coerce=int</big>) <-- changes the default coerce to Integer

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)

=== Formularfehler anzeigen lassen ===

for fieldName, errorMessages in form.errors.items():
for err in errorMessages:
flash("In field " + fieldName + " you have an error: " + err, 'danger')
pprint("In field " + fieldName + " you have an error: " + err, 'danger')

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Froggi: Die Seite wurde neu angelegt: „=== How to get WTF results as Integer? === When data comes back from the client it is treated as a string by WTForms unless a call…“