require named files

contracts/migrations/0060_alter_contractfile_name.py

+# Generated by Django 4.1.4 on 2023-05-03 11:28
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('contracts', '0059_alter_contract_is_valid'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='contractfile',
+            name='name',
+            field=models.CharField(default='Neznámé jméno', max_length=256, verbose_name='Jméno'),
+            preserve_default=False,
+        ),
+    ]

contracts/models.py

@@ -856,8 +856,8 @@ class ContractFileField(models.FileField):
 class ContractFile(NameStrMixin, models.Model):
     name = models.CharField(
         max_length=256,
-        blank=True,
-        null=True,
+        blank=False,
+        null=False,
         verbose_name="Jméno",
     )