Bump version number to 2.9.2

README.rst

@@ -212,6 +212,15 @@ Besides ``LocalizedField``, there's also:
                    title = LocalizedField()
                    slug = LocalizedUniqueSlugField(populate_from='title')
 
+    By setting the option ``include_time=True``
+
+          .. code-block:: python
+
+               slug = LocalizedUniqueSlugField(populate_from='title', include_time=True)
+
+    You can instruct the field to include a part of the current time into
+    the resulting slug. This is useful if you're running into a lot of collisions.
+
 * ``LocalizedAutoSlugField``
      Automatically creates a slug for every language from the specified field.
 

localized_fields/fields/localized_autoslug_field.py

@@ -1,4 +1,5 @@
 from typing import Callable
+from datetime import datetime
 
 from django import forms
 from django.conf import settings
@@ -16,6 +17,7 @@ class LocalizedAutoSlugField(LocalizedField):
         """Initializes a new instance of :see:LocalizedAutoSlugField."""
 
         self.populate_from = kwargs.pop('populate_from', None)
+        self.include_time = kwargs.pop('include_time', False)
 
         super(LocalizedAutoSlugField, self).__init__(
             *args,
@@ -30,6 +32,7 @@ class LocalizedAutoSlugField(LocalizedField):
             LocalizedAutoSlugField, self).deconstruct()
 
         kwargs['populate_from'] = self.populate_from
+        kwargs['include_time'] = self.include_time
         return name, path, args, kwargs
 
     def formfield(self, **kwargs):
@@ -76,6 +79,9 @@ class LocalizedAutoSlugField(LocalizedField):
             if not value:
                 continue
 
+            if self.include_time:
+                value += '-%s' % datetime.now().microsecond
+
             def is_unique(slug: str, language: str) -> bool:
                 """Gets whether the specified slug is unique."""
 

localized_fields/fields/localized_uniqueslug_field.py

@@ -1,3 +1,5 @@
+from datetime import datetime
+
 from django.conf import settings
 from django.utils.text import slugify
 from django.core.exceptions import ImproperlyConfigured
@@ -34,6 +36,18 @@ class LocalizedUniqueSlugField(LocalizedAutoSlugField):
         )
 
         self.populate_from = kwargs.pop('populate_from')
+        self.include_time = kwargs.pop('include_time', False)
+
+    def deconstruct(self):
+        """Deconstructs the field into something the database
+        can store."""
+
+        name, path, args, kwargs = super(
+            LocalizedUniqueSlugField, self).deconstruct()
+
+        kwargs['populate_from'] = self.populate_from
+        kwargs['include_time'] = self.include_time
+        return name, path, args, kwargs
 
     def pre_save(self, instance, add: bool):
         """Ran just before the model is saved, allows us to built
@@ -70,8 +84,25 @@ class LocalizedUniqueSlugField(LocalizedAutoSlugField):
                 continue
 
             slug = slugify(value, allow_unicode=True)
+
+            # verify whether it's needed to re-generate a slug,
+            # if not, re-use the same slug
+            if instance.pk is not None:
+                current_slug = getattr(instance, self.name).get(lang_code)
+                if current_slug is not None:
+                    stripped_slug = current_slug[0:current_slug.rfind('-')]
+                    if slug == stripped_slug:
+                        slugs.set(lang_code, current_slug)
+                        continue
+
+            if self.include_time:
+                slug += '-%d' % datetime.now().microsecond
+
             if instance.retries > 0:
-                slug += '-%d' % instance.retries
+                # do not add another - if we already added time
+                if not self.include_time:
+                    slug += '-'
+                slug += '%d' % instance.retries
 
             slugs.set(lang_code, slug)
 

setup.py

@@ -7,7 +7,7 @@ with open(os.path.join(os.path.dirname(__file__), 'README.rst')) as readme:
 
 setup(
     name='django-localized-fields',
-    version='2.7',
+    version='2.9.2',
     packages=find_packages(),
     include_package_data=True,
     license='MIT License',

tests/test_localized_slug_fields.py

@@ -1,11 +1,12 @@
+import copy
+
 from django import forms
 from django.conf import settings
 from django.test import TestCase
 from django.db.utils import IntegrityError
-from django.utils.text import slugify
-
 from localized_fields import (LocalizedField, LocalizedAutoSlugField,
                               LocalizedUniqueSlugField)
+from django.utils.text import slugify
 
 from .fake_model import get_fake_model
 
@@ -43,7 +44,7 @@ class LocalizedSlugFieldTestCase(TestCase):
         cls._test_populate(cls.AutoSlugModel)
 
     @classmethod
-    def test_populate_magic(cls):
+    def test_populate_unique(cls):
         cls._test_populate(cls.MagicSlugModel)
 
     @classmethod
@@ -51,7 +52,7 @@ class LocalizedSlugFieldTestCase(TestCase):
         cls._test_populate_multiple_languages(cls.AutoSlugModel)
 
     @classmethod
-    def test_populate_multiple_languages_magic(cls):
+    def test_populate_multiple_languages_unique(cls):
         cls._test_populate_multiple_languages(cls.MagicSlugModel)
 
     @classmethod
@@ -59,14 +60,62 @@ class LocalizedSlugFieldTestCase(TestCase):
         cls._test_unique_slug(cls.AutoSlugModel)
 
     @classmethod
-    def test_unique_slug_magic(cls):
+    def test_unique_slug_unique(cls):
         cls._test_unique_slug(cls.MagicSlugModel)
 
-    def test_unique_slug_magic_max_retries(self):
-        """Tests whether the magic slug implementation doesn't
+    @staticmethod
+    def test_unique_slug_with_time():
+        """Tests whether the primary key is included in
+        the slug when the 'use_pk' option is enabled."""
+
+        title = 'myuniquetitle'
+
+        PkModel = get_fake_model(
+            'PkModel',
+            {
+                'title': LocalizedField(),
+                'slug': LocalizedUniqueSlugField(populate_from='title', include_time=True)
+            }
+        )
+
+        obj = PkModel()
+        obj.title.en = title
+        obj.save()
+
+        assert obj.slug.en.startswith('%s-' % title)
+
+    @classmethod
+    def test_uniue_slug_no_change(cls):
+        """Tests whether slugs are not re-generated if not needed."""
+
+        NoChangeSlugModel = get_fake_model(
+            'NoChangeSlugModel',
+            {
+                'title': LocalizedField(),
+                'slug': LocalizedUniqueSlugField(populate_from='title', include_time=True)
+            }
+        )
+
+        title = 'myuniquetitle'
+
+        obj = NoChangeSlugModel()
+        obj.title.en = title
+        obj.title.nl = title
+        obj.save()
+
+        old_slug_en = copy.deepcopy(obj.slug.en)
+        old_slug_nl = copy.deepcopy(obj.slug.nl)
+        obj.title.nl += 'beer'
+        obj.save()
+
+        assert old_slug_en == obj.slug.en
+        assert old_slug_nl != obj.slug.nl
+
+    def test_unique_slug_unique_max_retries(self):
+        """Tests whether the unique slug implementation doesn't
         try to find a slug forever and gives up after a while."""
 
-        title = 'mymagictitle'
+        title = 'myuniquetitle'
 
         obj = self.MagicSlugModel()
         obj.title.en = title
@@ -83,7 +132,7 @@ class LocalizedSlugFieldTestCase(TestCase):
         cls._test_unique_slug_utf(cls.AutoSlugModel)
 
     @classmethod
-    def test_unique_slug_utf_magic(cls):
+    def test_unique_slug_utf_unique(cls):
         cls._test_unique_slug_utf(cls.MagicSlugModel)
 
     @classmethod
@@ -91,7 +140,7 @@ class LocalizedSlugFieldTestCase(TestCase):
         cls._test_deconstruct(LocalizedAutoSlugField)
 
     @classmethod
-    def test_deconstruct_magic(cls):
+    def test_deconstruct_unique(cls):
         cls._test_deconstruct(LocalizedUniqueSlugField)
 
     @classmethod
@@ -99,7 +148,7 @@ class LocalizedSlugFieldTestCase(TestCase):
         cls._test_formfield(LocalizedAutoSlugField)
 
     @classmethod
-    def test_formfield_magic(cls):
+    def test_formfield_unique(cls):
         cls._test_formfield(LocalizedUniqueSlugField)
 
     @staticmethod
@@ -130,7 +179,7 @@ class LocalizedSlugFieldTestCase(TestCase):
     def _test_unique_slug(model):
         """Tests whether unique slugs are properly generated."""
 
-        title = 'mymagictitle'
+        title = 'myuniquetitle'
 
         obj = model()
         obj.title.en = title