make slugs editable through admin panel

apps/blog/models.py

@@ -116,10 +116,11 @@ class Blog(models.Model):
             return None
     
     def save(self, *args, **kwargs):
-        try:
-            self.slug = generate_language_slugs(self.title)
-        except Exception:
-            self.slug = []
+        if not self.slug:
+            try:
+                self.slug = generate_language_slugs(self.title)
+            except Exception:
+                self.slug = []
         super().save(*args, **kwargs)
 
 
@@ -205,4 +206,4 @@ class BlogSeo(models.Model):
 
     def __str__(self):
         lang = getattr(self.language, 'code', None) if self.language else None
-        return f"SEO({lang or '-'}) - {self.title or ''}"
+        return f"SEO({lang or '-'}) - {self.title or ''}"

apps/course/serializers/admin.py

@@ -84,6 +84,7 @@ class AdminCourseListSerializer(serializers.ModelSerializer):
 
 
 class AdminCourseDetailSerializer(serializers.ModelSerializer):
+    slug = serializers.SlugField(required=False, allow_blank=True)
     category_name = serializers.CharField(source='category.name', read_only=True)
     professor_name = serializers.CharField(source='professor.fullname', read_only=True)
     thumbnail = FileFieldSerializer(required=False, allow_null=True)
@@ -124,7 +125,7 @@ class AdminCourseDetailSerializer(serializers.ModelSerializer):
             'created_at',
             'updated_at'
         ]
-        read_only_fields = ['id', 'slug', 'final_price', 'created_at', 'updated_at']
+        read_only_fields = ['id', 'final_price', 'created_at', 'updated_at']
 
     def get_participant_count(self, obj):
         return obj.participants.count()