Rename to drf-yasg

drf-swagger was already taken

src/drf_yasg/middleware.py

@@ -0,0 +1,23 @@
+from django.http import HttpResponse
+
+from .codecs import _OpenAPICodec
+from .errors import SwaggerValidationError
+
+
+class SwaggerExceptionMiddleware(object):
+    def __init__(self, get_response):
+        self.get_response = get_response
+
+    def __call__(self, request):
+        return self.get_response(request)
+
+    def process_exception(self, request, exception):
+        if isinstance(exception, SwaggerValidationError):
+            err = {'errors': {exception.validator_name: str(exception)}}
+            codec = exception.source_codec
+            if isinstance(codec, _OpenAPICodec):
+                err = codec.encode_error(err)
+                content_type = codec.media_type
+                return HttpResponse(err, status=500, content_type=content_type)
+
+        return None  # pragma: no cover