ref: make option values nullable (#94180)

I am planning to convert these to JSONField which represents `None` as
database NULL instead of json `null`

<!-- Describe your PR here. -->

Author: asottile-sentry

migrations_lockfile.txt

@@ -25,7 +25,7 @@ preprod: 0006_add_analysis_file_id_field
 
 replays: 0006_add_bulk_delete_job
 
-sentry: 0933_add_has_agents_insights_flag
+sentry: 0934_options_nullable_value
 
 social_auth: 0001_squashed_0002_default_auto_field
 

src/sentry/migrations/0934_options_nullable_value.py

@@ -0,0 +1,59 @@
+# Generated by Django 5.2.1 on 2025-06-24 14:40
+
+from django.db import migrations
+
+import sentry.db.models.fields.picklefield
+from sentry.new_migrations.migrations import CheckedMigration
+
+
+class Migration(CheckedMigration):
+    # This flag is used to mark that a migration shouldn't be automatically run in production.
+    # This should only be used for operations where it's safe to run the migration after your
+    # code has deployed. So this should not be used for most operations that alter the schema
+    # of a table.
+    # Here are some things that make sense to mark as post deployment:
+    # - Large data migrations. Typically we want these to be run manually so that they can be
+    #   monitored and not block the deploy for a long period of time while they run.
+    # - Adding indexes to large tables. Since this can take a long time, we'd generally prefer to
+    #   run this outside deployments so that we don't block them. Note that while adding an index
+    #   is a schema change, it's completely safe to run the operation after the code has deployed.
+    # Once deployed, run these manually via: https://develop.sentry.dev/database-migrations/#migration-deployment
+
+    is_post_deployment = False
+
+    dependencies = [
+        ("sentry", "0933_add_has_agents_insights_flag"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="controloption",
+            name="value",
+            field=sentry.db.models.fields.picklefield.PickledObjectField(editable=False, null=True),
+        ),
+        migrations.AlterField(
+            model_name="option",
+            name="value",
+            field=sentry.db.models.fields.picklefield.PickledObjectField(editable=False, null=True),
+        ),
+        migrations.AlterField(
+            model_name="organizationoption",
+            name="value",
+            field=sentry.db.models.fields.picklefield.PickledObjectField(editable=False, null=True),
+        ),
+        migrations.AlterField(
+            model_name="projectoption",
+            name="value",
+            field=sentry.db.models.fields.picklefield.PickledObjectField(editable=False, null=True),
+        ),
+        migrations.AlterField(
+            model_name="projecttemplateoption",
+            name="value",
+            field=sentry.db.models.fields.picklefield.PickledObjectField(editable=False, null=True),
+        ),
+        migrations.AlterField(
+            model_name="useroption",
+            name="value",
+            field=sentry.db.models.fields.picklefield.PickledObjectField(editable=False, null=True),
+        ),
+    ]

src/sentry/models/options/option.py

@@ -36,7 +36,7 @@ class BaseOption(OverwritableConfigMixin, Model):
     class Meta:
         abstract = True
 
-    value = PickledObjectField()
+    value = PickledObjectField(null=True)
 
     __repr__ = sane_repr("key", "value")
 

src/sentry/models/options/organization_option.py

@@ -113,7 +113,7 @@ class OrganizationOption(Model):
 
     organization = FlexibleForeignKey("sentry.Organization")
     key = models.CharField(max_length=64)
-    value = PickledObjectField()
+    value = PickledObjectField(null=True)
 
     objects: ClassVar[OrganizationOptionManager] = OrganizationOptionManager()
 

src/sentry/models/options/project_option.py

@@ -181,7 +181,7 @@ class ProjectOption(Model):
 
     project = FlexibleForeignKey("sentry.Project")
     key = models.CharField(max_length=64)
-    value = PickledObjectField()
+    value = PickledObjectField(null=True)
 
     objects: ClassVar[ProjectOptionManager] = ProjectOptionManager()
 

src/sentry/models/options/project_template_option.py

@@ -105,7 +105,7 @@ class ProjectTemplateOption(Model):
 
     project_template = FlexibleForeignKey("sentry.ProjectTemplate", related_name="options")
     key = models.CharField(max_length=64)
-    value = PickledObjectField()
+    value = PickledObjectField(null=True)
 
     objects: ClassVar[ProjectTemplateOptionManager] = ProjectTemplateOptionManager()
 

src/sentry/users/models/user_option.py

@@ -209,7 +209,7 @@ class UserOption(Model):
     project_id = HybridCloudForeignKey("sentry.Project", null=True, on_delete="CASCADE")
     organization_id = HybridCloudForeignKey("sentry.Organization", null=True, on_delete="CASCADE")
     key = models.CharField(max_length=64)
-    value = PickledObjectField()
+    value = PickledObjectField(null=True)
 
     objects: ClassVar[UserOptionManager] = UserOptionManager()