add support for ListField and EmbeddedModelField

Author: timgraham

.github/workflows/test-python.yml

@@ -31,7 +31,7 @@ jobs:
         uses: actions/checkout@v4
         with:
           repository: 'mongodb-forks/django'
-          ref: 'mongodb-5.0.x'
+          ref: 'embedded-model-field'
           path: 'django_repo'
       - name: Install system packages for Django's Python test dependencies
         run: |

django_mongodb/compiler.py

@@ -696,12 +696,12 @@ def execute_sql(self, result_type):
             elif hasattr(value, "prepare_database_save"):
                 if field.remote_field:
                     value = value.prepare_database_save(field)
-                else:
-                    raise TypeError(
-                        f"Tried to update field {field} with a model "
-                        f"instance, {value!r}. Use a value compatible with "
-                        f"{field.__class__.__name__}."
-                    )
+                # else:
+                #     raise TypeError(
+                #         f"Tried to update field {field} with a model "
+                #         f"instance, {value!r}. Use a value compatible with "
+                #         f"{field.__class__.__name__}."
+                #     )
             prepared = field.get_db_prep_save(value, connection=self.connection)
             if hasattr(value, "as_mql"):
                 prepared = prepared.as_mql(self, self.connection)

django_mongodb/features.py

@@ -40,6 +40,17 @@ class DatabaseFeatures(BaseDatabaseFeatures):
     uses_savepoints = False
 
     _django_test_expected_failures = {
+        # Unsupported conversion from array to string in $convert with no onError value
+        "mongo_fields.test_listfield.IterableFieldsTests.test_options",
+        "mongo_fields.test_listfield.IterableFieldsTests.test_startswith",
+        # No results:
+        "mongo_fields.test_listfield.IterableFieldsTests.test_chained_filter",
+        "mongo_fields.test_listfield.IterableFieldsTests.test_exclude",
+        "mongo_fields.test_listfield.IterableFieldsTests.test_gt",
+        "mongo_fields.test_listfield.IterableFieldsTests.test_gte",
+        "mongo_fields.test_listfield.IterableFieldsTests.test_lt",
+        "mongo_fields.test_listfield.IterableFieldsTests.test_lte",
+        "mongo_fields.test_listfield.IterableFieldsTests.test_Q_objects",
         # 'NulledTransform' object has no attribute 'as_mql'.
         "lookup.tests.LookupTests.test_exact_none_transform",
         # "Save with update_fields did not affect any rows."

django_mongodb/fields/__init__.py

@@ -1,8 +1,9 @@
 from .auto import ObjectIdAutoField
 from .duration import register_duration_field
+from .embedded_model import EmbeddedModelField, ListField
 from .json import register_json_field
 
-__all__ = ["register_fields", "ObjectIdAutoField"]
+__all__ = ["register_fields", "EmbeddedModelField", "ListField", "ObjectIdAutoField"]
 
 
 def register_fields():