mirror of
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81 lines
2.6 KiB
Python
81 lines
2.6 KiB
Python
from ...core.exceptions import SkipField
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from ...core.fields import Field
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from ...core.types.base import FieldType
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from ...core.types.definitions import List
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from ...relay import ConnectionField
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from ...relay.utils import is_node
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from .utils import get_type_for_model, maybe_queryset
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class DjangoConnectionField(ConnectionField):
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def __init__(self, *args, **kwargs):
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self.on = kwargs.pop('on', False)
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return super(DjangoConnectionField, self).__init__(*args, **kwargs)
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@property
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def model(self):
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return self.type._meta.model
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def get_manager(self):
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if self.on:
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return getattr(self.model, self.on)
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else:
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return self.model._default_manager
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def get_queryset(self, resolved_qs, args, info):
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return resolved_qs
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def from_list(self, connection_type, resolved, args, info):
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if not resolved:
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resolved = self.get_manager()
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resolved_qs = maybe_queryset(resolved)
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qs = self.get_queryset(resolved_qs, args, info)
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return super(DjangoConnectionField, self).from_list(connection_type, qs, args, info)
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class ConnectionOrListField(Field):
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def internal_type(self, schema):
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from .filter.fields import DjangoFilterConnectionField
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model_field = self.type
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field_object_type = model_field.get_object_type(schema)
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if not field_object_type:
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raise SkipField()
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if is_node(field_object_type):
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if field_object_type._meta.filter_fields:
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field = DjangoFilterConnectionField(field_object_type)
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else:
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field = DjangoConnectionField(field_object_type)
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else:
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field = Field(List(field_object_type))
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field.contribute_to_class(self.object_type, self.attname)
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return schema.T(field)
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class DjangoModelField(FieldType):
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def __init__(self, model, *args, **kwargs):
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self.model = model
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super(DjangoModelField, self).__init__(*args, **kwargs)
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def internal_type(self, schema):
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_type = self.get_object_type(schema)
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if not _type and self.parent._meta.only_fields:
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raise Exception(
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"Model %r is not accessible by the schema. "
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"You can either register the type manually "
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"using @schema.register. "
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"Or disable the field in %s" % (
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self.model,
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self.parent,
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)
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)
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if not _type:
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raise SkipField()
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return schema.T(_type)
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def get_object_type(self, schema):
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return get_type_for_model(schema, self.model)
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