Make node aliases not nullable #10437

arches/app/models/graph.py

@@ -2107,7 +2107,7 @@ def create_node_alias(self, node):
         Assigns a unique, slugified version of a node's name as that node's alias.
         """
         with connection.cursor() as cursor:
-            if node.hascustomalias:
+            if node.hascustomalias and node.alias:
                 cursor.callproc("__arches_slugify", [node.alias])
                 node.alias = cursor.fetchone()[0]
             else:
@@ -2117,6 +2117,7 @@ def create_node_alias(self, node):
                     n.alias for n in self.nodes.values() if node.alias != n.alias
                 ]
                 node.alias = self.make_name_unique(row[0], aliases, "_n")
+                node.hascustomalias = False
         return node.alias
 
     def validate(self):

arches/app/models/migrations/10437_node_alias_not_null.py

@@ -0,0 +1,31 @@
+# Generated by Django 5.1.2 on 2024-11-01 15:08
+
+from django.db import migrations, models
+
+# Once GraphModel.create_node_alias is a static method, we can remove this import.
+# Until then, this is safe to use in a migration, because it doesn't use Graph
+# fields (and thus is a lot like a static method).
+from arches.app.models.graph import Graph
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("models", "11042_update__arches_staging_to_tile"),
+    ]
+
+    def create_node_aliases(apps, schema_editor):
+        Node = apps.get_model("models", "Node")
+        nodes_needing_alias = Node.objects.filter(alias__isnull=True)
+        for node in nodes_needing_alias:
+            Graph.objects.get(pk=node.graph_id).create_node_alias(node)
+        Node.objects.bulk_update(nodes_needing_alias, ["alias"])
+
+    operations = [
+        migrations.RunPython(create_node_aliases, migrations.RunPython.noop),
+        migrations.AlterField(
+            model_name="node",
+            name="alias",
+            field=models.TextField(blank=True),
+        ),
+    ]

arches/app/models/models.py

@@ -805,7 +805,7 @@ def __init__(self, *args, **kwargs):
     sortorder = models.IntegerField(blank=True, null=True, default=0)
     fieldname = models.TextField(blank=True, null=True)
     exportable = models.BooleanField(default=False, null=True)
-    alias = models.TextField(blank=True, null=True)
+    alias = models.TextField(blank=True)
     hascustomalias = models.BooleanField(default=False)
     source_identifier = models.ForeignKey(
         "self",
@@ -904,7 +904,15 @@ def __init__(self, *args, **kwargs):
         if not self.nodeid:
             self.nodeid = uuid.uuid4()
 
-    def save(self, *args, **kwargs):
+    def clean(self):
+        if not self.alias:
+            Graph.objects.get(pk=self.graph_id).create_node_alias(self)
+
+    def save(self, **kwargs):
+        if not self.alias:
+            self.clean()
+            add_to_update_fields(kwargs, "alias")
+            add_to_update_fields(kwargs, "hascustomalias")
         if self.pk == self.source_identifier_id:
             self.source_identifier_id = None
             add_to_update_fields(kwargs, "source_identifier_id")

releases/8.0.0.md

@@ -21,6 +21,7 @@ Arches 8.0.0 Release Notes
 - Add system check advising next action when enabling additional languages without updating graphs [#10079](https://github.com/archesproject/arches/issues/10079)
 - Improve handling of longer model names [#11317](https://github.com/archesproject/arches/issues/11317)
 - Support more expressive plugin URLs [#11320](https://github.com/archesproject/arches/issues/11320)
+- Make node aliases not nullable [#10437](https://github.com/archesproject/arches/issues/10437)
 - Concepts API no longer responds with empty body for error conditions [#11519](https://github.com/archesproject/arches/issues/11519)
 - Removes sample index from new projects, updates test coverage behavior [#11591](https://github.com/archesproject/arches/issues/11519)
 
@@ -59,6 +60,9 @@ JavaScript:
 
 - `ensure_userprofile_exists()` was removed from the `Tile` model.
 
+- The following fields are no longer nullable. If you have custom SQL (or Python code that uses direct ORM operations to bypass model methods, etc.), you will need to set these fields directly on creation:
+    - `Node.alias`
+
 ### Upgrading Arches
 
 1. You must be upgraded to at least version   before proceeding. If you are on an earlier version, please refer to the upgrade process in the []()

tests/models/node_tests.py

@@ -0,0 +1,27 @@
+from arches.app.models.graph import Graph
+from arches.app.models.models import Node
+from tests.base_test import ArchesTestCase
+
+# these tests can be run from the command line via
+# python manage.py test tests.models.node_tests --settings="tests.test_settings"
+
+
+class NodeTests(ArchesTestCase):
+    @classmethod
+    def setUpTestData(cls):
+        cls.graph = Graph.new(name="Node Tests Graph")
+
+    def test_missing_alias_supplied(self):
+        new_node = Node(graph_id=self.graph.pk)
+        new_node.clean()
+        self.assertIsNotNone(new_node.alias)
+
+    def test_empty_custom_alias_regenerated(self):
+        """One dubiously empty alias per graph is currently allowed at the
+        database level. Ensure it is regenerated via the application."""
+        new_node = Node(
+            graph_id=self.graph.pk, name="Test node", alias="", hascustomalias=True
+        )
+        new_node.clean()
+        self.assertEqual(new_node.alias, "test_node")
+        self.assertIs(new_node.hascustomalias, False)

tests/models/tile_model_tests.py

@@ -23,6 +23,7 @@
 from django.contrib.auth.models import User
 from django.db.utils import ProgrammingError
 from django.http import HttpRequest
+from arches.app.models.graph import Graph
 from arches.app.models.tile import Tile, TileValidationError
 from arches.app.models.resource import Resource
 from arches.app.models.models import (
@@ -726,10 +727,12 @@ def test_related_resources_managed(self):
 
     def test_check_for_missing_nodes(self):
         # Required file list node.
+        graph = Graph.new(name="Test Graph")
         node_group = NodeGroup.objects.get(
             pk=UUID("41111111-0000-0000-0000-000000000000")
         )
         required_file_list_node = Node(
+            graph=graph,
             name="Required file list",
             datatype="file-list",
             nodegroup=node_group,