From c105f83880fcb48910f28b6eb16f8cfe14833468 Mon Sep 17 00:00:00 2001
From: JensDiemer <git@jensdiemer.de>
Date: Wed, 6 Sep 2017 12:03:51 +0200
Subject: [PATCH] NEW: jango_cms_tools.permissions.ModelPermissionMixin

---
 django_cms_tools/permissions.py | 49 +++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 django_cms_tools/permissions.py

diff --git a/django_cms_tools/permissions.py b/django_cms_tools/permissions.py
new file mode 100644
index 0000000..9fa7885
--- /dev/null
+++ b/django_cms_tools/permissions.py
@@ -0,0 +1,49 @@
+# coding: utf-8
+
+"""
+    permission helpers
+    ~~~~~~~~~~~~~~~~~~
+
+    create 06.Sep.2017 by Jens Diemer
+"""
+
+
+from __future__ import unicode_literals, absolute_import, print_function
+
+import logging
+
+from django_tools.permissions import ModelPermissionMixin as ModelPermissionBaseMixin
+
+
+log = logging.getLogger(__name__)
+
+
+class ModelPermissionMixin(ModelPermissionBaseMixin):
+    """
+    Helper for easy model permission checks.
+
+    e.g.:
+        from django_cms_tools.permissions import ModelPermissionMixin
+
+        class FooModel(ModelPermissionMixin, models.Model):
+            ...
+
+        def view(request):
+            if FooModel.edit_mode_and_change_permission(request):
+                ...
+    """
+    @classmethod
+    def edit_mode_and_change_permission(cls, request):
+        edit_mode = hasattr(request, 'toolbar') and request.toolbar.edit_mode
+        # edit_mode = request.user.is_staff and request.session.get('cms_edit', False)
+
+        if not edit_mode:
+            # log.debug("Not in edit mode.")
+            return False
+
+        user = request.user
+        if not cls.has_change_permission(user, raise_exception=False):
+            # log.debug("User has no change permissions.")
+            return False
+
+        return True