fix python2 and 3 compatible

Author: gusibi

swagger_py_codegen/templates/falcon/api.tpl

@@ -1,6 +1,8 @@
 # -*- coding: utf-8 -*-
 from __future__ import absolute_import, print_function
 
+from six import with_metaclass
+import six
 import falcon
 
 from ..validators import  request_validate, response_filter
@@ -11,25 +13,33 @@ before_decorators = [request_validate]
 after_decorators = [response_filter]
 
 
+if six.PY3:
+    ismethod = inspect.isfunction
+else:
+    ismethod = inspect.ismethod
+
+
 def add_before_decorators(model_class):
-    for name, m in inspect.getmembers(model_class, inspect.ismethod):
+    for name, m in inspect.getmembers(model_class, ismethod):
         if name in ['on_get', 'on_post', 'on_put', 'on_delete']:
             setattr(model_class, name, falcon.before(*before_decorators)(m))
 
 
 def add_after_decorators(model_class):
-    for name, m in inspect.getmembers(model_class, inspect.ismethod):
+    for name, m in inspect.getmembers(model_class, ismethod):
         if name in ['on_get', 'on_post', 'on_put', 'on_delete']:
             setattr(model_class, name, falcon.after(*after_decorators)(m))
 
 
 class APIMetaclass(type):
-
     """
     Metaclass of the Model.
     """
-
     def __init__(cls, name, bases, attrs):
         super(APIMetaclass, cls).__init__(name, bases, attrs)
         add_before_decorators(cls)
         add_after_decorators(cls)
+
+class Resource(with_metaclass(APIMetaclass, object)):
+
+    pass

swagger_py_codegen/templates/falcon/validators.tpl

@@ -102,7 +102,7 @@ def request_validate(req, resp, resource, params):
     if method == 'HEAD':
         method = 'GET'
     locations = validators.get((endpoint, method), {})
-    options = {}
+    context = {}
     for location, schema in six.iteritems(locations):
         value = getattr(req, location, MultiDict())
         if location == 'headers':
@@ -124,8 +124,8 @@ def request_validate(req, resp, resource, params):
         result, errors = validator.validate(value)
         if errors:
             raise falcon.HTTPUnprocessableEntity('Unprocessable Entity', description=errors)
-        options[location] = result
-    req.options = options
+        context[location] = result
+    req.context = context
 
 
 def response_filter(req, resp, resource):

swagger_py_codegen/templates/falcon/view.tpl

@@ -3,18 +3,16 @@ from __future__ import absolute_import, print_function
 
 import falcon
 
-from . import APIMetaclass
+from . import Resource
 
 
-class {{ name }}(object):
-
-    __metaclass__ = APIMetaclass
+class {{ name }}(Resource):
 
     {%- for method, ins in methods.items() %}
 
     def on_{{ method.lower() }}(self, req, resp{{ params.__len__() and ', ' or '' }}{{ params | join(', ') }}):
         {%- for request in ins.requests %}
-        print(req.options['{{ request }}'])
+        print(req.context['{{ request }}'])
         {%- endfor %}
 
         {% if 'response' in  ins -%}