#1: ongoing changes to update contents of Dataset.parameters field

geospaas/catalog/migrations/0008a_add_newparameters_field.py

@@ -0,0 +1,19 @@
+# Generated by Django 2.1.5 on 2019-02-04 18:01
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('vocabularies', '0001_initial'),
+        ('catalog', '0007c_remove_source_and_specs_fields'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='dataset',
+            name='newparameters',
+            field=models.ManyToManyField(to='vocabularies.Parameter'),
+        ),
+    ]

geospaas/catalog/migrations/0008b_migrate_parameters_data.py

@@ -0,0 +1,19 @@
+# Generated by Django 2.1.5 on 2019-02-05 12:18
+
+from django.db import migrations
+
+def forward(apps, schema_editor):
+    Dataset = apps.get_model('catalog', 'Dataset')
+    for ds in Dataset.objects.all():
+        ds.newparameters.add(ds.parameters.parameter)
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('catalog', '0008a_add_newparameters_field'),
+    ]
+
+    operations = [
+            migrations.RunPython(forward, backward),
+    ]

geospaas/catalog/migrations/0009_auto_20190204_1802.py → geospaas/catalog/migrations/0009_rename_newparameters_field.py

@@ -6,7 +6,7 @@
 class Migration(migrations.Migration):
 
     dependencies = [
-        ('catalog', '0008_auto_20190204_1801'),
+        ('catalog', '0008c_remove_parameters_field'),
     ]
 
     operations = [