Argument validation¶

CorePost integrates the popular ‘formencode’ package to implement form and query argument validation. Validators can be specified using a formencode Schema object, or via custom field-specific validators.

Example:

from corepost.web import validate, route
from corepost.enums import Http
from formencode import Schema, validators

class TestSchema(Schema):
    allow_extra_fields = True
    childId = validators.Regex(regex="^value1|value2$")

class MyApp():

        @route("/validate/<int:rootId>/schema",Http.POST)
        @validate(schema=TestSchema())
        def postValidateSchema(self,request,rootId,childId,**kwargs):
            '''Validate using a common schema'''
            return "%s - %s - %s" % (rootId,childId,kwargs)

        @route("/validate/<int:rootId>/custom",Http.POST)
        @validate(childId=validators.Regex(regex="^value1|value2$"))
        def postValidateCustom(self,request,rootId,childId,**kwargs):
            '''Validate using argument-specific validators'''
            return "%s - %s - %s" % (rootId,childId,kwargs)

Please see the FormEncode documentation:

http://www.formencode.org/en/latest/Validator.html

for list of available validators:

Previous topic

Argument parsing

Next topic

This Page