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fix: issue#728 pydantic_core._pydantic_core.Url object is not iterable (
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#730)

* pre-commit

* fix: change test for pydantic v1, v2

* fix: add encoder itself test, conditional default encoder
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tomohirohiratsuka committed Oct 14, 2023
1 parent d9eb71d commit 0db4dd4
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324 changes: 169 additions & 155 deletions beanie/odm/utils/encoder.py
Original file line number Diff line number Diff line change
@@ -1,155 +1,169 @@
import dataclasses as dc
import datetime
import decimal
import enum
import ipaddress
import operator
import pathlib
import re
import uuid
from typing import Any, Callable, Container, Iterable, Mapping, Optional, Tuple

import bson
import pydantic

import beanie
from beanie.odm.fields import Link, LinkTypes
from beanie.odm.utils.pydantic import IS_PYDANTIC_V2, get_model_fields

SingleArgCallable = Callable[[Any], Any]
DEFAULT_CUSTOM_ENCODERS: Mapping[type, SingleArgCallable] = {
ipaddress.IPv4Address: str,
ipaddress.IPv4Interface: str,
ipaddress.IPv4Network: str,
ipaddress.IPv6Address: str,
ipaddress.IPv6Interface: str,
ipaddress.IPv6Network: str,
pathlib.PurePath: str,
pydantic.SecretBytes: pydantic.SecretBytes.get_secret_value,
pydantic.SecretStr: pydantic.SecretStr.get_secret_value,
datetime.timedelta: operator.methodcaller("total_seconds"),
enum.Enum: operator.attrgetter("value"),
Link: operator.attrgetter("ref"),
bytes: bson.Binary,
decimal.Decimal: bson.Decimal128,
uuid.UUID: bson.Binary.from_uuid,
re.Pattern: bson.Regex.from_native,
}
BSON_SCALAR_TYPES = (
type(None),
str,
int,
float,
datetime.datetime,
bson.Binary,
bson.DBRef,
bson.Decimal128,
bson.ObjectId,
)


@dc.dataclass
class Encoder:
"""
BSON encoding class
"""

exclude: Container[str] = frozenset()
custom_encoders: Mapping[type, SingleArgCallable] = dc.field(
default_factory=dict
)
to_db: bool = False
keep_nulls: bool = True

def _encode_document(self, obj: "beanie.Document") -> Mapping[str, Any]:
obj.parse_store()
settings = obj.get_settings()
obj_dict = {}
if settings.union_doc is not None:
obj_dict[settings.class_id] = (
settings.union_doc_alias or obj.__class__.__name__
)
if obj._class_id:
obj_dict[settings.class_id] = obj._class_id

link_fields = obj.get_link_fields() or {}
sub_encoder = Encoder(
# don't propagate self.exclude to subdocuments
custom_encoders=settings.bson_encoders,
to_db=self.to_db,
keep_nulls=self.keep_nulls,
)
for key, value in self._iter_model_items(obj):
if key in link_fields:
link_type = link_fields[key].link_type
if link_type in (LinkTypes.DIRECT, LinkTypes.OPTIONAL_DIRECT):
if value is not None:
value = value.to_ref()
elif link_type in (LinkTypes.LIST, LinkTypes.OPTIONAL_LIST):
if value is not None:
value = [link.to_ref() for link in value]
elif self.to_db:
continue
obj_dict[key] = sub_encoder.encode(value)
return obj_dict

def encode(self, obj: Any) -> Any:
if self.custom_encoders:
encoder = _get_encoder(obj, self.custom_encoders)
if encoder is not None:
return encoder(obj)

if isinstance(obj, BSON_SCALAR_TYPES):
return obj

encoder = _get_encoder(obj, DEFAULT_CUSTOM_ENCODERS)
if encoder is not None:
return encoder(obj)

if isinstance(obj, beanie.Document):
return self._encode_document(obj)
if IS_PYDANTIC_V2 and isinstance(obj, pydantic.RootModel):
return self.encode(obj.root)
if isinstance(obj, pydantic.BaseModel):
items = self._iter_model_items(obj)
return {key: self.encode(value) for key, value in items}
if isinstance(obj, Mapping):
return {key: self.encode(value) for key, value in obj.items()}
if isinstance(obj, Iterable):
return [self.encode(value) for value in obj]

errors = []
try:
data = dict(obj)
except Exception as e:
errors.append(e)
try:
data = vars(obj)
except Exception as e:
errors.append(e)
raise ValueError(errors)
return self.encode(data)

def _iter_model_items(
self, obj: pydantic.BaseModel
) -> Iterable[Tuple[str, Any]]:
exclude, keep_nulls = self.exclude, self.keep_nulls
get_model_field = get_model_fields(obj).get
for key, value in obj.__iter__():
field_info = get_model_field(key)
if field_info is not None:
key = field_info.alias or key
if key not in exclude and (value is not None or keep_nulls):
yield key, value


def _get_encoder(
obj: Any, custom_encoders: Mapping[type, SingleArgCallable]
) -> Optional[SingleArgCallable]:
encoder = custom_encoders.get(type(obj))
if encoder is not None:
return encoder
for cls, encoder in custom_encoders.items():
if isinstance(obj, cls):
return encoder
return None
import dataclasses as dc
import datetime
import decimal
import enum
import ipaddress
import operator
import pathlib
import re
import uuid
from typing import (
Any,
Callable,
Container,
Iterable,
Mapping,
MutableMapping,
Optional,
Tuple,
)

import bson
import pydantic

import beanie
from beanie.odm.fields import Link, LinkTypes
from beanie.odm.utils.pydantic import IS_PYDANTIC_V2, get_model_fields

SingleArgCallable = Callable[[Any], Any]
DEFAULT_CUSTOM_ENCODERS: MutableMapping[type, SingleArgCallable] = {
ipaddress.IPv4Address: str,
ipaddress.IPv4Interface: str,
ipaddress.IPv4Network: str,
ipaddress.IPv6Address: str,
ipaddress.IPv6Interface: str,
ipaddress.IPv6Network: str,
pathlib.PurePath: str,
pydantic.SecretBytes: pydantic.SecretBytes.get_secret_value,
pydantic.SecretStr: pydantic.SecretStr.get_secret_value,
datetime.timedelta: operator.methodcaller("total_seconds"),
enum.Enum: operator.attrgetter("value"),
Link: operator.attrgetter("ref"),
bytes: bson.Binary,
decimal.Decimal: bson.Decimal128,
uuid.UUID: bson.Binary.from_uuid,
re.Pattern: bson.Regex.from_native,
}
if IS_PYDANTIC_V2:
from pydantic_core import Url

DEFAULT_CUSTOM_ENCODERS[Url] = str

BSON_SCALAR_TYPES = (
type(None),
str,
int,
float,
datetime.datetime,
bson.Binary,
bson.DBRef,
bson.Decimal128,
bson.ObjectId,
)


@dc.dataclass
class Encoder:
"""
BSON encoding class
"""

exclude: Container[str] = frozenset()
custom_encoders: Mapping[type, SingleArgCallable] = dc.field(
default_factory=dict
)
to_db: bool = False
keep_nulls: bool = True

def _encode_document(self, obj: "beanie.Document") -> Mapping[str, Any]:
obj.parse_store()
settings = obj.get_settings()
obj_dict = {}
if settings.union_doc is not None:
obj_dict[settings.class_id] = (
settings.union_doc_alias or obj.__class__.__name__
)
if obj._class_id:
obj_dict[settings.class_id] = obj._class_id

link_fields = obj.get_link_fields() or {}
sub_encoder = Encoder(
# don't propagate self.exclude to subdocuments
custom_encoders=settings.bson_encoders,
to_db=self.to_db,
keep_nulls=self.keep_nulls,
)
for key, value in self._iter_model_items(obj):
if key in link_fields:
link_type = link_fields[key].link_type
if link_type in (LinkTypes.DIRECT, LinkTypes.OPTIONAL_DIRECT):
if value is not None:
value = value.to_ref()
elif link_type in (LinkTypes.LIST, LinkTypes.OPTIONAL_LIST):
if value is not None:
value = [link.to_ref() for link in value]
elif self.to_db:
continue
obj_dict[key] = sub_encoder.encode(value)
return obj_dict

def encode(self, obj: Any) -> Any:
if self.custom_encoders:
encoder = _get_encoder(obj, self.custom_encoders)
if encoder is not None:
return encoder(obj)

if isinstance(obj, BSON_SCALAR_TYPES):
return obj

encoder = _get_encoder(obj, DEFAULT_CUSTOM_ENCODERS)
if encoder is not None:
return encoder(obj)

if isinstance(obj, beanie.Document):
return self._encode_document(obj)
if IS_PYDANTIC_V2 and isinstance(obj, pydantic.RootModel):
return self.encode(obj.root)
if isinstance(obj, pydantic.BaseModel):
items = self._iter_model_items(obj)
return {key: self.encode(value) for key, value in items}
if isinstance(obj, Mapping):
return {key: self.encode(value) for key, value in obj.items()}
if isinstance(obj, Iterable):
return [self.encode(value) for value in obj]

errors = []
try:
data = dict(obj)
except Exception as e:
errors.append(e)
try:
data = vars(obj)
except Exception as e:
errors.append(e)
raise ValueError(errors)
return self.encode(data)

def _iter_model_items(
self, obj: pydantic.BaseModel
) -> Iterable[Tuple[str, Any]]:
exclude, keep_nulls = self.exclude, self.keep_nulls
get_model_field = get_model_fields(obj).get
for key, value in obj.__iter__():
field_info = get_model_field(key)
if field_info is not None:
key = field_info.alias or key
if key not in exclude and (value is not None or keep_nulls):
yield key, value


def _get_encoder(
obj: Any, custom_encoders: Mapping[type, SingleArgCallable]
) -> Optional[SingleArgCallable]:
encoder = custom_encoders.get(type(obj))
if encoder is not None:
return encoder
for cls, encoder in custom_encoders.items():
if isinstance(obj, cls):
return encoder
return None
2 changes: 2 additions & 0 deletions tests/odm/conftest.py
Original file line number Diff line number Diff line change
Expand Up @@ -39,6 +39,7 @@
DocumentWithCustomInit,
DocumentWithDecimalField,
DocumentWithExtras,
DocumentWithHttpUrlField,
DocumentWithIndexMerging1,
DocumentWithIndexMerging2,
DocumentWithKeepNullsFalse,
Expand Down Expand Up @@ -209,6 +210,7 @@ async def init(db):
DocumentWithTurnedOffStateManagement,
DocumentWithValidationOnSave,
DocumentWithRevisionTurnedOn,
DocumentWithHttpUrlField,
House,
Window,
WindowWithValidationOnSave,
Expand Down
5 changes: 5 additions & 0 deletions tests/odm/models.py
Original file line number Diff line number Diff line change
Expand Up @@ -27,6 +27,7 @@
BaseModel,
ConfigDict,
Field,
HttpUrl,
PrivateAttr,
SecretBytes,
SecretStr,
Expand Down Expand Up @@ -1032,3 +1033,7 @@ class DocWithCallWrapper(Document):
@validate_call
def foo(self, bar: str) -> None:
print(f"foo {bar}")


class DocumentWithHttpUrlField(Document):
url_field: HttpUrl
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