💥 Make TemporaryFileUpload.submission non-nullable

Dockerfile

@@ -92,6 +92,7 @@ RUN mkdir /app/bin /app/log /app/media /app/private_media /app/certifi_ca_bundle
 COPY \
     ./bin/check_celery_worker_liveness.py \
     ./bin/report_component_problems.py \
+    ./bin/check_temporary_uploads.py \
     ./bin/
 
 # prevent writing to the container layer, which would degrade performance.

bin/check_temporary_uploads.py

@@ -0,0 +1,33 @@
+#!/usr/bin/env python
+import sys
+from pathlib import Path
+
+import django
+
+SRC_DIR = Path(__file__).parent.parent / "src"
+sys.path.insert(0, str(SRC_DIR.resolve()))
+
+
+def check_for_null_submissions_in_temporary_uploads():
+    from openforms.submissions.models import TemporaryFileUpload
+
+    problematic_uploads = TemporaryFileUpload.objects.filter(submission__isnull=True)
+    if problematic_uploads.exists():
+        print("There are still legacy temporary uploads. You must clear those first.")
+        return False
+
+    return True
+
+
+def main(skip_setup=False) -> bool:
+    from openforms.setup import setup_env
+
+    if not skip_setup:
+        setup_env()
+        django.setup()
+
+    return check_for_null_submissions_in_temporary_uploads()
+
+
+if __name__ == "__main__":
+    main()

docs/installation/upgrade-300.rst

@@ -103,3 +103,15 @@ Removal of /api/v2/location/get-street-name-and-city endpoint
 
 The /api/v2/location/get-street-name-and-city was deprecated for some time,
 and is now removed in favor of the /api/v2/geo/address-autocomplete endpoint.
+
+Legacy temporary file uploads no longer supported
+=================================================
+
+Before Open Forms 2.7.0, temporary file uploads (as created by the file upload form
+component) would not be related to the submission they were uploaded in. We call these
+legacy temporary file uploads, and support for them has been removed in Open Forms 3.0.
+
+The setting ``TEMPORARY_UPLOADS_REMOVED_AFTER_DAYS`` controls how long file uploads are
+kept. Ensure that this many days have passed since the last legacy upload before
+upgrading to Open Forms 3.0, otherwise you will run into database errors during the
+upgrade.

src/openforms/formio/components/vanilla.py

@@ -383,10 +383,7 @@ def validate(self, attrs: dict[str, Any]) -> dict[str, Any]:
                 {"originalName": _("Name does not match the uploaded file.")}
             )
 
-        if (
-            not temporary_upload.legacy
-            and temporary_upload.submission != self.context["submission"]
-        ):
+        if temporary_upload.submission != self.context["submission"]:
             raise serializers.ValidationError({"url": _("Invalid URL.")})
 
         with temporary_upload.content.open("rb") as infile:

src/openforms/submissions/migrations/0013_remove_temporaryfileupload_non_legacy_submission_not_null_and_more.py

@@ -0,0 +1,32 @@
+# Generated by Django 4.2.17 on 2024-12-09 15:04
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("submissions", "0012_alter_submission_price"),
+    ]
+
+    operations = [
+        migrations.RemoveConstraint(
+            model_name="temporaryfileupload",
+            name="non_legacy_submission_not_null",
+        ),
+        migrations.RemoveField(
+            model_name="temporaryfileupload",
+            name="legacy",
+        ),
+        migrations.AlterField(
+            model_name="temporaryfileupload",
+            name="submission",
+            field=models.ForeignKey(
+                help_text="Submission the temporary file upload belongs to.",
+                on_delete=django.db.models.deletion.CASCADE,
+                to="submissions.submission",
+                verbose_name="submission",
+            ),
+        ),
+    ]

src/openforms/submissions/models/submission_files.py

@@ -8,7 +8,6 @@
 
 from django.core.files.base import File
 from django.db import models
-from django.db.models import Q
 from django.utils import timezone
 from django.utils.translation import gettext_lazy as _
 
@@ -49,17 +48,9 @@ def select_prune(self, age: timedelta):
 
 class TemporaryFileUpload(DeleteFileFieldFilesMixin, models.Model):
     uuid = models.UUIDField(_("UUID"), unique=True, default=uuid.uuid4)
-    legacy = models.BooleanField(
-        _("legacy"),
-        default=False,
-        help_text=_("Whether the instance is linked to a submission instance."),
-    )
-    # TODO DeprecationWarning null=True is a transitional state, and should be removed
-    # at some point:
     submission = models.ForeignKey(
         "submissions.Submission",
         on_delete=models.CASCADE,
-        null=True,
         verbose_name=_("submission"),
         help_text=_("Submission the temporary file upload belongs to."),
     )
@@ -83,13 +74,6 @@ class TemporaryFileUpload(DeleteFileFieldFilesMixin, models.Model):
     class Meta:
         verbose_name = _("temporary file upload")
         verbose_name_plural = _("temporary file uploads")
-        constraints = [
-            models.CheckConstraint(
-                check=(Q(legacy=False) & Q(submission__isnull=False))
-                | (Q(legacy=True) & Q(submission__isnull=True)),
-                name="non_legacy_submission_not_null",
-            ),
-        ]
 
 
 class SubmissionFileAttachmentQuerySet(

src/openforms/submissions/tests/test_models.py

@@ -3,7 +3,6 @@
 from unittest.mock import patch
 
 from django.core.exceptions import ValidationError
-from django.db import IntegrityError
 from django.test import TestCase, override_settings, tag
 
 from freezegun import freeze_time
@@ -23,7 +22,6 @@
     SubmissionFileAttachmentFactory,
     SubmissionReportFactory,
     SubmissionStepFactory,
-    TemporaryFileUploadFactory,
 )
 
 
@@ -589,19 +587,3 @@ def test_names_do_not_break_pdf_saving_to_disk(self):
         report.generate_submission_report_pdf()
 
         self.assertTrue(report.content.storage.exists(report.content.name))
-
-
-class TemporaryFileUploadTests(TestCase):
-    def test_legacy_check_constraint(self):
-        with self.assertRaises(IntegrityError):
-            TemporaryFileUploadFactory.create(
-                submission=None,
-                legacy=False,
-            )
-
-    def test_non_legacy_check_constraint(self):
-        with self.assertRaises(IntegrityError):
-            TemporaryFileUploadFactory.create(
-                submission=SubmissionFactory.create(),
-                legacy=True,
-            )

src/openforms/upgrades/upgrade_paths.py

@@ -76,6 +76,12 @@ def run_checks(self) -> bool:
 # If your current version falls outside of a supported range, you need to do another
 # upgrade path (first) or there is no upgrade path at all.
 UPGRADE_PATHS = {
+    "3.0": UpgradeConstraint(
+        valid_ranges={
+            VersionRange(minimum="2.8.0"),
+        },
+        scripts=["check_temporary_uploads"],
+    ),
     "2.8": UpgradeConstraint(
         valid_ranges={
             VersionRange(minimum="2.7.4"),