add: contract create serializer, TODO: fix errors with owners create and test

core/apps/companies/migrations/0005_alter_companyfoldermodel_contracts.py

@@ -0,0 +1,21 @@
+# Generated by Django 5.2.4 on 2025-08-05 06:17
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("companies", "0004_alter_companymodel_logo_and_more"),
+        ("contracts", "0001_initial"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="companyfoldermodel",
+            name="contracts",
+            field=models.ManyToManyField(
+                blank=True, null=True, related_name="folders", to="contracts.contractmodel", verbose_name="Contracts"
+            ),
+        ),
+    ]

core/apps/companies/models/folders.py

@@ -37,6 +37,8 @@ class CompanyFolderModel(UUIDPrimaryKeyBaseModel):
         ContractModel,
         verbose_name=_("Contracts"),
         related_name="folders",
+        null=True,
+        blank=True
     )
 
     def __str__(self):