fix: added merchant_id to printing_order and plate_order

printing/migrations/0029_add_merchant_to_models.py

@@ -0,0 +1,30 @@
+# Generated by Django 5.2.8 on 2026-01-14 05:41
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('basic_info', '0024_frontend_page_and_visible_pages'),
+        ('printing', '0028_batch_advance_record_only_parameters'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='plateorder',
+            name='merchant',
+            field=models.ForeignKey(blank=True, help_text='所属商户，可空以兼容历史数据', null=True, on_delete=django.db.models.deletion.PROTECT, related_name='plate_orders', to='basic_info.merchant', verbose_name='商户'),
+        ),
+        migrations.AddField(
+            model_name='printingjob',
+            name='merchant',
+            field=models.ForeignKey(blank=True, help_text='所属商户，可空以兼容历史数据', null=True, on_delete=django.db.models.deletion.PROTECT, related_name='printing_jobs', to='basic_info.merchant', verbose_name='商户'),
+        ),
+        migrations.AddField(
+            model_name='printingorder',
+            name='merchant',
+            field=models.ForeignKey(blank=True, help_text='所属商户，可空以兼容历史数据', null=True, on_delete=django.db.models.deletion.PROTECT, related_name='printing_orders', to='basic_info.merchant', verbose_name='商户'),
+        ),
+    ]