Refs #34944 -- Propagated system checks for GeneratedField.output_field.

2 files changed, 37 insertions, 1 deletions

diff --git a/django/db/models/fields/__init__.py b/django/db/models/fields/__init__.py
index 205a41c193..ce3bebb591 100644
--- a/django/db/models/fields/__init__.py
+++ b/django/db/models/fields/__init__.py
@@ -286,6 +286,8 @@ class Field(RegisterLookupMixin):
         Check if field name is valid, i.e. 1) does not end with an
         underscore, 2) does not contain "__" and 3) is not "pk".
         """
+        if self.name is None:
+            return []
         if self.name.endswith("_"):
             return [
                 checks.Error(
diff --git a/django/db/models/fields/generated.py b/django/db/models/fields/generated.py
index ce811789c3..9a73b7fe37 100644
--- a/django/db/models/fields/generated.py
+++ b/django/db/models/fields/generated.py
@@ -63,11 +63,45 @@ class GeneratedField(Field):
 
     def check(self, **kwargs):
         databases = kwargs.get("databases") or []
-        return [
+        errors = [
             *super().check(**kwargs),
             *self._check_supported(databases),
             *self._check_persistence(databases),
         ]
+        output_field_clone = self.output_field.clone()
+        output_field_clone.model = self.model
+        output_field_checks = output_field_clone.check(databases=databases)
+        if output_field_checks:
+            separator = "\n    "
+            error_messages = separator.join(
+                f"{output_check.msg} ({output_check.id})"
+                for output_check in output_field_checks
+                if isinstance(output_check, checks.Error)
+            )
+            if error_messages:
+                errors.append(
+                    checks.Error(
+                        "GeneratedField.output_field has errors:"
+                        f"{separator}{error_messages}",
+                        obj=self,
+                        id="fields.E223",
+                    )
+                )
+            warning_messages = separator.join(
+                f"{output_check.msg} ({output_check.id})"
+                for output_check in output_field_checks
+                if isinstance(output_check, checks.Warning)
+            )
+            if warning_messages:
+                errors.append(
+                    checks.Warning(
+                        "GeneratedField.output_field has warnings:"
+                        f"{separator}{warning_messages}",
+                        obj=self,
+                        id="fields.W224",
+                    )
+                )
+        return errors
 
     def _check_supported(self, databases):
         errors = []