Empty request when using custom validators

[tesarm]

Swagger doesn't generate request object for services with custom validators:

How to reproduce:

from cornice import Service
from cornice.validators import colander_body_validator 

def my_validator(request, schema=None, deserializer=None, **kwargs):
    return colander_body_validator(request, schema, deserializer, **kwargs)

class MySchema(colander.Schema):
    dummy = colander.SchemaNode(colander.String())

documented = Service(name='my_service', path='/my-url')
@documented.post(schema=MySchema(), validators=(colander_body_validator,))
def documented_post(self):
        return {}

undocumented = Service(name='another_service', path='/another-url')
@undocumented.post(schema=MySchema(), validators=(my_validator,))
def undocumented_post(self):
        return {}

The reason why I need to use custom validator is because I want to bind request to schema. My actual validator looks like the function below, but it doesn't make any difference if I call it with modifications

def my_validator(request, schema=None, deserializer=None, **kwargs):
    return colander_body_validator(request, schema.bind(request=request), deserializer, **kwargs)

[jomasti]

I can't check right now, but I think you can create a body schema transfomer for the validator and append it to the list of transformers that are ran:

def body_schema_transformer(schema, args):
    validators = args.get('validators', [])
    if my_validator in validators:
        body_schema = schema
        schema = colander.MappingSchema()
        schema['body'] = body_schema
    return schema

@swagger.get()
def swagger_spec(request):
    ...
    generator = CorniceSwagger(get_services())
    generator.schema_transformers.append(body_schema_transformer)
    ...

[gabisurita]

@jomasti answer should do the job. Currently that's not documented, but it definitely should be on this section.

[gabisurita]

Related to #51

[gabisurita]

@tesarm I've updated the documentation and assumed this to be solved. Feel free to reopen it if you have more problems. :)