menu old_id for transfer

apps/establishment/migrations/0078_menu_old_id.py

@@ -0,0 +1,18 @@
+# Generated by Django 2.2.7 on 2020-01-24 05:58
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('establishment', '0077_menuuploads'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='menu',
+            name='old_id',
+            field=models.PositiveIntegerField(blank=True, default=None, null=True, verbose_name='old id'),
+        ),
+    ]

apps/establishment/models.py

@@ -1243,6 +1243,7 @@ class Menu(TranslatedFieldsMixin, BaseAttributes):
         verbose_name=_('Establishment schedule'),
         related_name='menus',
     )
+    old_id = models.PositiveIntegerField(_('old id'), blank=True, null=True, default=None)
 
     class Meta:
         verbose_name = _('menu')