Initial Contributionv1.0

1 files changed, 39 insertions, 0 deletions

diff --git a/webapp/django/views/decorators/http.py b/webapp/django/views/decorators/http.py
new file mode 100644
index 0000000000..dd4f90ea9c
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+++ b/webapp/django/views/decorators/http.py
@@ -0,0 +1,39 @@
+"""
+Decorators for views based on HTTP headers.
+"""
+
+try:
+    from functools import wraps
+except ImportError:
+    from django.utils.functional import wraps  # Python 2.3, 2.4 fallback.
+
+from django.utils.decorators import decorator_from_middleware
+from django.middleware.http import ConditionalGetMiddleware
+from django.http import HttpResponseNotAllowed
+
+conditional_page = decorator_from_middleware(ConditionalGetMiddleware)
+
+def require_http_methods(request_method_list):
+    """
+    Decorator to make a view only accept particular request methods.  Usage::
+
+        @require_http_methods(["GET", "POST"])
+        def my_view(request):
+            # I can assume now that only GET or POST requests make it this far
+            # ...
+
+    Note that request methods should be in uppercase.
+    """
+    def decorator(func):
+        def inner(request, *args, **kwargs):
+            if request.method not in request_method_list:
+                return HttpResponseNotAllowed(request_method_list)
+            return func(request, *args, **kwargs)
+        return wraps(func)(inner)
+    return decorator
+
+require_GET = require_http_methods(["GET"])
+require_GET.__doc__ = "Decorator to require that a view only accept the GET method."
+
+require_POST = require_http_methods(["POST"])
+require_POST.__doc__ = "Decorator to require that a view only accept the POST method."
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