Fixed #35359 -- Fixed migration operations ordering when adding fields referenced by GeneratedField.expression.

Thank you to Simon Charette for the review.

tests/migrations/test_operations.py

@@ -9,7 +9,7 @@ from django.db.migrations.operations.fields import FieldOperation
 from django.db.migrations.state import ModelState, ProjectState
 from django.db.models import F
 from django.db.models.expressions import Value
-from django.db.models.functions import Abs, Pi
+from django.db.models.functions import Abs, Concat, Pi
 from django.db.transaction import atomic
 from django.test import (
     SimpleTestCase,
@@ -1379,6 +1379,54 @@ class OperationTests(OperationTestBase):
         self.assertEqual(definition[1], [])
         self.assertEqual(sorted(definition[2]), ["field", "model_name", "name"])
 
+    @skipUnlessDBFeature("supports_stored_generated_columns")
+    def test_add_generate_field(self):
+        app_label = "test_add_generate_field"
+        project_state = self.apply_operations(
+            app_label,
+            ProjectState(),
+            operations=[
+                migrations.CreateModel(
+                    "Rider",
+                    fields=[
+                        ("id", models.AutoField(primary_key=True)),
+                    ],
+                ),
+                migrations.CreateModel(
+                    "Pony",
+                    fields=[
+                        ("id", models.AutoField(primary_key=True)),
+                        ("name", models.CharField(max_length=20)),
+                        (
+                            "rider",
+                            models.ForeignKey(
+                                f"{app_label}.Rider", on_delete=models.CASCADE
+                            ),
+                        ),
+                        (
+                            "name_and_id",
+                            models.GeneratedField(
+                                expression=Concat(("name"), ("rider_id")),
+                                output_field=models.TextField(),
+                                db_persist=True,
+                            ),
+                        ),
+                    ],
+                ),
+            ],
+        )
+        Pony = project_state.apps.get_model(app_label, "Pony")
+        Rider = project_state.apps.get_model(app_label, "Rider")
+        rider = Rider.objects.create()
+        pony = Pony.objects.create(name="pony", rider=rider)
+        self.assertEqual(pony.name_and_id, str(pony.name) + str(rider.id))
+
+        new_rider = Rider.objects.create()
+        pony.rider = new_rider
+        pony.save()
+        pony.refresh_from_db()
+        self.assertEqual(pony.name_and_id, str(pony.name) + str(new_rider.id))
+
     def test_add_charfield(self):
         """
         Tests the AddField operation on TextField.