signals for text field

apps/review/admin.py

@@ -1,13 +1,8 @@
 """Admin page for app Review"""
-from . import models
 from django.contrib import admin
+
 from utils.admin import BaseModelAdminMixin
-
-
-class ReviewTextAuthorInline(admin.TabularInline):
-    """ReviewTextAuthor inline."""
-    model = models.ReviewTextAuthor
-    extra = 0
+from . import models
 
 
 @admin.register(models.Review)
@@ -15,7 +10,6 @@ class ReviewAdminModel(BaseModelAdminMixin, admin.ModelAdmin):
     """Admin model for model Review."""
 
     raw_id_fields = ('reviewer', 'child', 'country')
-    inlines = [ReviewTextAuthorInline, ]
 
 
 @admin.register(models.ReviewTextAuthor)

apps/review/models.py

@@ -1,7 +1,11 @@
 """Review app models."""
+from pprint import pprint
+
 from django.contrib.contenttypes import fields as generic
 from django.core.validators import MinValueValidator, MaxValueValidator
 from django.db import models
+from django.db.models.signals import post_init, post_save
+from django.dispatch import receiver
 from django.utils.translation import gettext_lazy as _
 
 from utils.models import (BaseAttributes, TranslatedFieldsMixin,
@@ -93,6 +97,30 @@ class Review(BaseAttributes, TranslatedFieldsMixin):
         verbose_name_plural = _('Reviews')
 
 
+@receiver(signal=post_init, sender=Review)
+def post_init_handler(instance, **kwargs):
+    instance.original_text = instance.text
+
+
+@receiver(signal=post_save, sender=Review)
+def post_save_handler(instance, **kwargs):
+    new_text = instance.text
+    old_text = instance.original_text
+    if new_text != old_text:
+        for locale in new_text:
+            if locale in old_text:
+                pass
+            else:
+                # TODO: для добавленной локали создать запись в ReviewTextAuthor
+                pass
+
+        # TODO: для измененной локали создать или обновить запись в ReviewTextAuthor
+        # TODO: для удаленной локали удалить соответствующую запись в ReviewTextAuthor
+
+        pprint(instance.text)
+        pprint(instance.original_text)
+
+
 class ReviewTextAuthor(ProjectBaseMixin):
     author = models.ForeignKey(
         'account.User',