import formencode
from formencode import validators
def validate(schema):
def fn(realfn):
def wrapper(*args, **kws):
field_names = schema.fields.keys()
args_dict = dict(zip(realfn.func_code.co_varnames, args))
args_dict.update(dict((field_name, kws.get(field_name)) for field_name in field_names if field_name in kws))
schema().to_python(args_dict)
return realfn(*args, **kws)
return wrapper
return fn
class GreetSchema(formencode.Schema):
name = validators.String(not_empty=True)
@validate(GreetSchema)
def greet(name):
print 'hello', name
greet('shon')
greet(name='shon')
greet('')
