first commit

home/signals.py

@@ -0,0 +1,52 @@
+from django.db.models.signals import post_save, post_delete, m2m_changed
+from django.dispatch import receiver
+from django.core.cache import cache
+from home.models import (Home, AboutMe, MyService, MyServiceTitle, MyResume, Education, Experience, Skill, Knowledge,
+                         MainMenu, Tags)
+
+HOME_CACHE_KEYS = (
+    'home:active_home',
+    'home:active_aboutme',
+    'home:service_list',
+    'home:service_title',
+    'home:resume',
+    'home:education_list',
+    'home:experience_list',
+    'home:skill_list',
+    'home:knowledge_list',
+    'home:active_menu',
+)
+
+
+def clear_home_cache():
+    cache.delete_many(HOME_CACHE_KEYS)
+
+
+@receiver(post_save, sender=Home)
+@receiver(post_delete, sender=Home)
+@receiver(post_save, sender=AboutMe)
+@receiver(post_delete, sender=AboutMe)
+@receiver(post_save, sender=MyService)
+@receiver(post_delete, sender=MyService)
+@receiver(post_save, sender=MyServiceTitle)
+@receiver(post_delete, sender=MyServiceTitle)
+@receiver(post_save, sender=MyResume)
+@receiver(post_delete, sender=MyResume)
+@receiver(post_save, sender=Education)
+@receiver(post_delete, sender=Education)
+@receiver(post_save, sender=Experience)
+@receiver(post_delete, sender=Experience)
+@receiver(post_save, sender=Skill)
+@receiver(post_delete, sender=Skill)
+@receiver(post_save, sender=Knowledge)
+@receiver(post_delete, sender=Knowledge)
+@receiver(post_save, sender=MainMenu)
+@receiver(post_delete, sender=MainMenu)
+def clear_home_cache_on_save(sender, instance, **kwargs):
+    clear_home_cache()
+
+
+@receiver(m2m_changed, sender=Home.tags.through)
+def clear_home_cache_on_tags_change(sender, instance, action, **kwargs):
+    if action in {"post_add", "post_remove", "post_clear"}:
+        clear_home_cache()