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Merge pull request #61 from dapper91/forward-refs
forward refs support added.
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Original file line number | Diff line number | Diff line change |
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from typing import Any, Optional, Type | ||
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import pydantic as pd | ||
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import pydantic_xml as pxml | ||
from pydantic_xml.element import XmlElementReader, XmlElementWriter | ||
from pydantic_xml.serializers.encoder import XmlEncoder | ||
from pydantic_xml.serializers.serializer import Serializer | ||
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class ForwardRefSerializerFactory: | ||
""" | ||
Primitive type serializer factory. | ||
""" | ||
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class ForwardRefSerializer(Serializer): | ||
def __init__( | ||
self, | ||
model: Type['pxml.BaseXmlModel'], | ||
model_field: pd.fields.ModelField, | ||
ctx: Serializer.Context, | ||
): | ||
self._model = model | ||
self._model_field = model_field | ||
self._ctx = ctx | ||
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def serialize( | ||
self, element: XmlElementWriter, value: Any, *, encoder: XmlEncoder, skip_empty: bool = False, | ||
) -> Optional[XmlElementWriter]: | ||
raise pxml.errors.ModelFieldError( | ||
self._model.__name__, | ||
self._model_field.name, | ||
"field is not yet prepared so type is still a ForwardRef, you might need to call update_forward_refs()", | ||
) | ||
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def deserialize(self, element: Optional[XmlElementReader]) -> Any: | ||
raise pxml.errors.ModelFieldError( | ||
self._model.__name__, | ||
self._model_field.name, | ||
"field is not yet prepared so type is still a ForwardRef, you might need to call update_forward_refs()", | ||
) | ||
|
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def resolve_forward_refs(self) -> Serializer: | ||
return self._build_field_serializer(self._model, self._model_field, self._ctx) | ||
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@classmethod | ||
def build( | ||
cls, | ||
model: Type['pxml.BaseXmlModel'], | ||
model_field: pd.fields.ModelField, | ||
ctx: Serializer.Context, | ||
) -> 'Serializer': | ||
return cls.ForwardRefSerializer(model, model_field, ctx) |
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