Add default_metadata in DocumentType

src/documents/migrations/1037_alter_documenttype_add_default_metadata.py

@@ -0,0 +1,24 @@
+# Generated by Django 4.1.7 on 2023-07-23 17:36
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('documents', '1036_add_metadata'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='documenttype',
+            name='default_metadata',
+            field=models.JSONField(blank=True, help_text='Default JSON metadata', null=True, verbose_name='default_metadata'),
+        ),
+        migrations.AlterField(
+            model_name='metadata',
+            name='document',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='document', to='documents.document', verbose_name='document'),
+        ),
+    ]

src/documents/models.py

@@ -112,6 +112,14 @@ class Tag(MatchingModel):
 
 
 class DocumentType(MatchingModel):
+    default_metadata = models.JSONField(
+        _("default_metadata"),
+        # Source: https://stackoverflow.com/a/47590145/5575610
+        null=True,
+        blank=True,
+        help_text=_("Default JSON metadata"),
+    )
+
     class Meta(MatchingModel.Meta):
         verbose_name = _("document type")
         verbose_name_plural = _("document types")