template processor can_user to check permissions

issue/context_processors.py

@@ -7,3 +7,32 @@ def projects(request):
         return {'projects': request.projects}
     else:
         return {}
+
+
+class PermissionChecker:
+
+    def getattr(self, request, perm, obj=None):
+        if request.user.is_authenticated():
+            return request.user.has_perm(perm, obj)
+
+class PermWrapper:
+
+    def __init__(self, user):
+        self.user = user
+
+    def __getitem__(self, perm):
+        return self.user.has_perm(perm)
+
+    def __iter__(self):
+        raise TypeError("PermWrapper is not iterable.")
+
+    def __contains__(self, perm):
+        return self[perm]
+
+def can_user(request):
+
+    wrapper = PermWrapper(request.user)
+
+    return {
+        'can_user': wrapper,
+    }

ponytracker/settings.py

@@ -109,6 +109,7 @@ TEMPLATE_CONTEXT_PROCESSORS = (
     'django.contrib.auth.context_processors.auth',
     'django.core.context_processors.request',
     'issue.context_processors.projects',
+    'issue.context_processors.can_user',
 )
 
 AUTHENTICATION_BACKENDS = (