Add CanCreateMixin, and add amount in journals

core/views/__init__.py

@@ -12,6 +12,11 @@ def forbidden(request):
 def not_found(request):
     return HttpResponseNotFound(render(request, "core/404.jinja"))
 
+def can_create(mod, user):
+    if mod.can_be_created_by(user):
+        return True
+    return False
+
 def can_edit_prop(obj, user):
     if obj is None or user.is_owner(obj):
         return True
@@ -27,6 +32,19 @@ def can_view(obj, user):
         return True
     return can_edit(obj, user)
 
+class CanCreateMixin(View):
+    """
+    This view is made to protect any child view that would create an object, and thus, that can not be protected by any
+    of the following mixin
+    """
+    def dispatch(self, request, *arg, **kwargs):
+        res = super(CanCreateMixin, self).dispatch(request, *arg, **kwargs)
+        if hasattr(self, 'model'):
+            mod = self.model
+        if can_create(mod, self.request.user):
+            return res
+        raise PermissionDenied
+
 class CanEditPropMixin(View):
     """
     This view is made to protect any child view that would be showing some properties of an object that are restricted