Improve Data Migration

Improved migration files so that they preserve data

Change-Id: I53283fd3fd207ed3f9773beea7b1ce2062b5bd9f
Signed-off-by: Parker Berberian <pberberian@iol.unh.edu>

1 files changed, 22 insertions, 0 deletions

diff --git a/src/api/migrations/0012_manual_20200218_1536.py b/src/api/migrations/0012_manual_20200218_1536.py
new file mode 100644
index 0000000..55befbd
--- /dev/null
+++ b/src/api/migrations/0012_manual_20200218_1536.py
@@ -0,0 +1,22 @@
+# Generated by Django 2.2 on 2020-02-18 15:36
+
+from django.db import migrations
+
+
+def set_resource_id(apps, schema_editor):
+    for cls in ["HostHardwareRelation", "HostNetworkRelation", "SnapshotConfig"]:
+        model = apps.get_model('api', cls)
+        for m in model.objects.all():
+            m.resource_id = m.host.labid
+            m.save()
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('api', '0011_auto_20200218_1536'),
+    ]
+
+    operations = [
+        migrations.RunPython(set_resource_id),
+    ]