python-itemadapter/pydantic2.patch

Index: itemadapter-0.8.0/README.md
===================================================================
--- itemadapter-0.8.0.orig/README.md
+++ itemadapter-0.8.0/README.md
@@ -193,7 +193,7 @@ The returned value is taken from the fol
     for `dataclass`-based items
   * [`attr.Attribute.metadata`](https://www.attrs.org/en/stable/examples.html#metadata)
     for `attrs`-based items
-  * [`pydantic.fields.FieldInfo`](https://pydantic-docs.helpmanual.io/usage/schema/#field-customisation)
+  * [`pydantic.fields.FieldInfo`](https://docs.pydantic.dev/latest/api/fields/#pydantic.fields.FieldInfo)
     for `pydantic`-based items
 
 #### class method `get_field_names_from_class(item_class: type) -> Optional[list[str]]`
Index: itemadapter-0.8.0/itemadapter/adapter.py
===================================================================
--- itemadapter-0.8.0.orig/itemadapter/adapter.py
+++ itemadapter-0.8.0/itemadapter/adapter.py
@@ -179,24 +179,24 @@ class PydanticAdapter(AdapterInterface):
 
     @classmethod
     def get_field_names_from_class(cls, item_class: type) -> Optional[List[str]]:
-        return list(item_class.__fields__.keys())  # type: ignore[attr-defined]
+        return list(item_class.model_fields.keys())  # type: ignore[attr-defined]
 
     def field_names(self) -> KeysView:
-        return KeysView(self.item.__fields__)
+        return KeysView(self.item.model_fields)
 
     def __getitem__(self, field_name: str) -> Any:
-        if field_name in self.item.__fields__:
+        if field_name in self.item.model_fields:
             return getattr(self.item, field_name)
         raise KeyError(field_name)
 
     def __setitem__(self, field_name: str, value: Any) -> None:
-        if field_name in self.item.__fields__:
+        if field_name in self.item.model_fields:
             setattr(self.item, field_name, value)
         else:
             raise KeyError(f"{self.item.__class__.__name__} does not support field: {field_name}")
 
     def __delitem__(self, field_name: str) -> None:
-        if field_name in self.item.__fields__:
+        if field_name in self.item.model_fields:
             try:
                 delattr(self.item, field_name)
             except AttributeError:
@@ -205,7 +205,7 @@ class PydanticAdapter(AdapterInterface):
             raise KeyError(f"{self.item.__class__.__name__} does not support field: {field_name}")
 
     def __iter__(self) -> Iterator:
-        return iter(attr for attr in self.item.__fields__ if hasattr(self.item, attr))
+        return iter(attr for attr in self.item.model_fields if hasattr(self.item, attr))
 
     def __len__(self) -> int:
         return len(list(iter(self)))
Index: itemadapter-0.8.0/itemadapter/utils.py
===================================================================
--- itemadapter-0.8.0.orig/itemadapter/utils.py
+++ itemadapter-0.8.0/itemadapter/utils.py
@@ -23,30 +23,21 @@ def _is_pydantic_model(obj: Any) -> bool
 
 def _get_pydantic_model_metadata(item_model: Any, field_name: str) -> MappingProxyType:
     metadata = {}
-    field = item_model.__fields__[field_name].field_info
+    field = item_model.model_fields[field_name]
 
     for attribute in [
         "alias",
         "title",
         "description",
-        "const",
-        "gt",
-        "ge",
-        "lt",
-        "le",
-        "multiple_of",
-        "min_items",
-        "max_items",
-        "min_length",
-        "max_length",
-        "regex",
     ]:
         value = getattr(field, attribute)
         if value is not None:
             metadata[attribute] = value
-    if not field.allow_mutation:
-        metadata["allow_mutation"] = field.allow_mutation
-    metadata.update(field.extra)
+    if field.frozen is not None:
+        metadata["frozen"] = field.frozen
+
+    if field.json_schema_extra is not None:
+        metadata.update(field.json_schema_extra)
 
     return MappingProxyType(metadata)
 
Index: itemadapter-0.8.0/tests/__init__.py
===================================================================
--- itemadapter-0.8.0.orig/tests/__init__.py
+++ itemadapter-0.8.0/tests/__init__.py
@@ -102,7 +102,7 @@ else:
 
 
 try:
-    from pydantic import BaseModel, Field as PydanticField
+    from pydantic import ConfigDict, BaseModel, Field as PydanticField
 except ImportError:
     PydanticModel = None
     PydanticSpecialCasesModel = None
@@ -125,11 +125,9 @@ else:
         special_cases: Optional[int] = PydanticField(
             default_factory=lambda: None,
             alias="special_cases",
-            allow_mutation=False,
+            frozen=False,
         )
-
-        class Config:
-            validate_assignment = True
+        model_config = ConfigDict(validate_assignment=True)
 
     class PydanticModelNested(BaseModel):
         nested: PydanticModel
@@ -139,9 +137,7 @@ else:
         set_: set
         tuple_: tuple
         int_: int
-
-        class Config:
-            arbitrary_types_allowed = True
+        model_config = ConfigDict(arbitrary_types_allowed=True)
 
     class PydanticModelSubclassed(PydanticModel):
         subclassed: bool = PydanticField(
Index: itemadapter-0.8.0/tests/test_adapter_pydantic.py
===================================================================
--- itemadapter-0.8.0.orig/tests/test_adapter_pydantic.py
+++ itemadapter-0.8.0/tests/test_adapter_pydantic.py
@@ -73,7 +73,7 @@ class DataclassTestCase(unittest.TestCas
         )
         self.assertEqual(
             get_field_meta_from_class(PydanticSpecialCasesModel, "special_cases"),
-            MappingProxyType({"alias": "special_cases", "allow_mutation": False}),
+            MappingProxyType({"alias": "special_cases", "frozen": False}),
         )
         with self.assertRaises(KeyError, msg="PydanticModel does not support field: non_existent"):
             get_field_meta_from_class(PydanticModel, "non_existent")