Independent data model validation with colander

[Andrius Kulbis]

I started using colander in my pyramid project. Created a simple data model mapping using colander

class DataModel(colander.MappingSchema):
    user_count = colander.SchemaNode(colander.Integer())
    expiration_date = colander.SchemaNode(colander.Date())
    comment = colander.SchemaNode(colander.String())

How can I pass submited form data to this mapping ir order to validate it without using deform? Is it possible to iterate over a validation errors?

model = DataModel()

if 'submit' request.POST:
   form_data =request.POST.items()
   ???

[tonthon]

Hi,
you may use peppercorn for this purpose :

import peppercorn
controls = request.params.items()
values = peppercorn.parse(controls)
try:
appstruct = schema.deserialize(values)
except colander.Invalid as e:
logger.exception(u"An error occured")

Hope this help,
Regards
Gaston

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