add receipt_template to class model

courses/classes/models.py

@@ -36,7 +36,14 @@ class Class(models.Model):
         'certification.CertificateTemplate',
         models.SET_NULL,
         verbose_name=_('CertificateTemplate'),
-        related_name='classes',
+        related_name='classes_certificate',
+        null=True,
+    )
+    receipt_template = models.ForeignKey(
+        'certification.CertificateTemplate',
+        models.SET_NULL,
+        verbose_name=_('CertificateTemplate'),
+        related_name='classes_receipt',
         null=True,
     )
 

courses/migrations/0032_auto_20210803_0308.py

+# Generated by Django 2.2.24 on 2021-08-03 06:08
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('certification', '0008_auto_20210730_1110'),
+        ('courses', '0031_auto_20210730_1115'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='class',
+            name='receipt_template',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='classes_receipt', to='certification.CertificateTemplate', verbose_name='CertificateTemplate'),
+        ),
+        migrations.AlterField(
+            model_name='class',
+            name='certificate_template',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='classes_certificate', to='certification.CertificateTemplate', verbose_name='CertificateTemplate'),
+        ),
+    ]