Form Validation of None Values

[lucasvo]

It's not the prettiest solution but without fixing mongoengine's email validation, this will have to do

If you setup the following resource form:

class SomeDocument(Document):
     email = EmailField(required=False)
     name = StringField()

ResourceFormBase = model_form(SomeDocument, exclude=['email'])
class ResourceForm(ResourceFormBase):
    email = fields.TextField(validators=[validators.optional(), validators.email()])

A POST with the following json: {'name':'John Doe'} fails without these changes.

Because form.data returns: {'name':'John Doe', 'email':''} instead of {'name':'John Doe'} which causes a validation error. There might be other consequences of this behavior.

[travisbot]

This pull request passes (merged cd4e965 into 8ab7866).

[anemitz]

Can you provide a test case which shows the failure for several field types?

[lucasvo]

The problem lies in flask-mongoengine.wtf: MongoEngine/flask-mongoengine#9 I'm not sure if it makes sense adding this hotfix here. I'll see how i can fix flask-mongoengine.

[anemitz]

closing this issue as it has moved to flask-mongoengine.