got redirects in wrapper working with messaging

rowers/decorators.py

@@ -0,0 +1,46 @@
+from django.contrib.auth.decorators import login_required,user_passes_test
+
+from django.http import HttpResponseRedirect
+from django.core.exceptions import PermissionDenied
+from django.utils.decorators import available_attrs
+from django.contrib import messages
+
+try:
+    from functools import wraps
+except ImportError:
+    from django.utils.functional import wraps
+
+
+REDIRECT_FIELD_NAME = None
+
+default_message = "Please log in, in order to see the requested page."
+
+def user_passes_test(test_func, message=default_message,login_url=None,redirect_field_name=None):
+    """
+    Decorator for views that checks that the user passes the given test,
+    setting a message in case of no success. The test should be a callable
+    that takes the user object and returns True if the user passes.
+    """
+    def decorator(view_func):
+        @wraps(view_func, assigned=available_attrs(view_func))
+        def _wrapped_view(request, *args, **kwargs):
+            if not test_func(request.user):
+                messages.error(request, message)
+                return HttpResponseRedirect(login_url)
+            return view_func(request, *args, **kwargs)
+        return _wrapped_view
+    return decorator
+
+def login_required_message(function=None, message=default_message):
+    """
+    Decorator for views that checks that the user is logged in, redirecting
+    to the log-in page if necessary.
+    """
+    actual_decorator = user_passes_test(
+        lambda u: u.is_authenticated(),
+        message=message,
+    )
+    if function:
+        return actual_decorator(function)
+    return actual_decorator
+