fix allow_unicode kwarg for AutoSlugField (#482)

djangocms_blog/fields.py

@@ -10,8 +10,9 @@
 
 class AutoSlugField(SlugField):
     def __init__(self, *args, **kwargs):
-        self.allow_unicode = kwargs.pop('allow_unicode', False)
-        super(SlugField, self).__init__(*args, **kwargs)
+        if django.VERSION < (1, 9):
+            self.allow_unicode = kwargs.pop('allow_unicode', False)
+        super(AutoSlugField, self).__init__(*args, **kwargs)
 
 
 def slugify(base):

djangocms_blog/migrations/0036_auto_20180913_1809.py

@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.15 on 2018-09-13 18:09
+from __future__ import unicode_literals
+
+from django.db import migrations
+import djangocms_blog.fields
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('djangocms_blog', '0035_posttranslation_subtitle'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='posttranslation',
+            name='slug',
+            field=djangocms_blog.fields.AutoSlugField(allow_unicode=True, blank=True, max_length=767, verbose_name='slug'),
+        ),
+    ]