CODEWITHSUNDEEP
pythonvalidationflaskwtformsflask-wtforms
andiwin
andiwin

Reputation: 1602

Flask Wtform calling both FieldList and FormField validate() causes error

so I have this code

class ItemPurchaseForm(wtforms.Form):
    purchase_price = IntegerField(label='Purchase Price: ',
                                  validators=[InputRequired()])

    def validate(self, *args, **kwargs):
        if not super().validate():
            self.purchase_price.errors += (super().errors,)
            return False
        #.... do other validations....

class PurchaseTransactionForm(Form):
    yyyy = IntegerField(label='Transaction Year',
                        validators=[InputRequired()])

    transaction_items = FieldList(FormField(ItemPurchaseForm),
                                  label='Purchased items',
                                  min_entries=1)
    submit_button = SubmitField(label='Add new purchase transaction')

    def validate(self, **kwargs):

        if not super().validate():
            self.yyyy.errors += (super().errors, 'super not validated')
            return False

         #.... do some other validation

As you can see there is a FieldList(FormField(...)), so I followed this answer to fix previous error caused by CRSF field. And now if I have def validate() in ItemPurchaseForm it will give me error, and the error is just this: {'transaction_items': [{}]}.

If I remove the def validate() from ItemPurhcaseForm, everything works well. Is there any reason why that causes error? I did read this http://wtforms.readthedocs.org/en/latest/fields.html#wtforms.fields.Field.validate, so does it mean that ItemPurchaseForm is a Subfield?

Upvotes: 2

Views: 1179

Answers (1)

andiwin
andiwin

Reputation: 1602

I know the problem and have fixed the problem. I just forgot to put return True in ItemPurchaseForm validate()

Upvotes: 2

Related Questions