Update Baner Meta & save

apps/content/models.py

@@ -117,3 +117,17 @@ class Baner(models.Model):
     button_text = models.CharField(max_length=50)
     url = models.URLField()
     image = models.ImageField()
+    use = models.BooleanField(default=False)
+
+    created_at = models.DateTimeField(auto_now_add=True)
+    update_at = models.DateTimeField(auto_now=True)
+
+    class Meta:
+        verbose_name = 'Банер'
+        verbose_name_plural = 'Банеры'
+        ordering = ('-created_at',)
+
+    def save(*args, **kwargs):
+        if self.use:
+            Baner.objects.filter(use=true).update(use=False)
+        return super().save(*args, **kwargs)