Merge pull request #948 from chiuczek/json-dependency-injection

Use dependency injection to allow alternative json parser or encoder

sanic/request.py

@@ -71,12 +71,17 @@ class Request(dict):
     @property
     def json(self):
         if self.parsed_json is None:
-            try:
-                self.parsed_json = json_loads(self.body)
-            except Exception:
-                if not self.body:
-                    return None
-                raise InvalidUsage("Failed when parsing body as json")
+            self.load_json()
+
+        return self.parsed_json
+
+    def load_json(self, loads=json_loads):
+        try:
+            self.parsed_json = loads(self.body)
+        except Exception:
+            if not self.body:
+                return None
+            raise InvalidUsage("Failed when parsing body as json")
 
         return self.parsed_json
 

sanic/response.py

@@ -237,7 +237,8 @@ class HTTPResponse(BaseHTTPResponse):
 
 
 def json(body, status=200, headers=None,
-         content_type="application/json", **kwargs):
+         content_type="application/json", dumps=json_dumps,
+         **kwargs):
     """
     Returns response object with body in json format.
 
@@ -246,7 +247,7 @@ def json(body, status=200, headers=None,
     :param headers: Custom Headers.
     :param kwargs: Remaining arguments that are passed to the json encoder.
     """
-    return HTTPResponse(json_dumps(body, **kwargs), headers=headers,
+    return HTTPResponse(dumps(body, **kwargs), headers=headers,
                         status=status, content_type=content_type)