DocumentTemplate: add slug, manage natural key. Utils: create_slug function

1 files changed, 14 insertions, 0 deletions

diff --git a/ishtar_common/utils.py b/ishtar_common/utils.py
index 19ff16394..9eda2d22f 100644
--- a/ishtar_common/utils.py
+++ b/ishtar_common/utils.py
@@ -241,3 +241,17 @@ def post_save_point(sender, **kwargs):
         instance.skip_history_when_saving = True
         instance.save()
     return
+
+
+def create_slug(model, name, slug_attr='slug', max_length=100):
+    base_slug = slugify(name)
+    slug = base_slug[:max_length]
+    final_slug = None
+    idx = 1
+    while not final_slug:
+        if slug and not model.objects.filter(**{slug_attr:slug}).exists():
+            final_slug = slug
+            break
+        slug = base_slug[:(max_length - 1 - len(str(idx)))] + "-" + str(idx)
+        idx += 1
+    return final_slug