Collection and revision spec migration

alyx/data/migrations/0018_alter_dataset_collection_alter_revision_name.py

@@ -0,0 +1,24 @@
+# Generated by Django 4.1.7 on 2023-06-16 12:19
+
+import django.core.validators
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('data', '0017_alter_dataset_object_id'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='dataset',
+            name='collection',
+            field=models.CharField(blank=True, help_text='file subcollection or subfolder', max_length=255, null=True, validators=[django.core.validators.RegexValidator('^[\\w./-]+$', 'Collections must only contain letters, numbers, hyphens, underscores and forward slashes.')]),
+        ),
+        migrations.AlterField(
+            model_name='revision',
+            name='name',
+            field=models.CharField(blank=True, help_text='Long name', max_length=255, unique=True, validators=[django.core.validators.RegexValidator('^[\\w.-]+$', 'Revisions must only contain letters, numbers, hyphens, underscores and forward slashes.')]),
+        ),
+    ]