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36 lines
1.1 KiB
Python
36 lines
1.1 KiB
Python
from sqlalchemy.orm.query import Query
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from graphene.relay import ConnectionField
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from graphql_relay.connection.arrayconnection import connection_from_list_slice
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from .utils import get_query
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class SQLAlchemyConnectionField(ConnectionField):
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@property
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def model(self):
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return self.connection._meta.node._meta.model
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def get_query(self, context):
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return get_query(self.model, context)
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def default_resolver(self, root, args, context, info):
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return getattr(root, self.source or self.attname, self.get_query(context))
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@staticmethod
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def connection_resolver(resolver, connection, root, args, context, info):
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iterable = resolver(root, args, context, info)
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if isinstance(iterable, Query):
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_len = iterable.count()
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else:
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_len = len(iterable)
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return connection_from_list_slice(
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iterable,
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args,
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slice_start=0,
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list_length=_len,
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list_slice_length=_len,
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connection_type=connection,
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edge_type=connection.Edge,
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)
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