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from dataclasses import dataclass
import graphql
from apischema import serialize
from apischema.graphql import graphql_schema, relay
@dataclass
class Faction(relay.Node[int]):
name: str
@classmethod
def get_by_id(cls, id: int, info: graphql.GraphQLResolveInfo = None) -> "Faction":
return [Faction(0, "Empire"), Faction(1, "Rebels")][id]
schema = graphql_schema(query=[relay.node], types=relay.nodes())
some_global_id = Faction.get_by_id(0).global_id # Let's pick a global id ...
assert some_global_id == relay.GlobalId("0", Faction)
query = """
query factionName($id: ID!) {
node(id: $id) {
... on Faction {
name
}
}
}"""
assert graphql.graphql_sync( # ... and use it in a query
schema, query, variable_values={"id": serialize(relay.GlobalId, some_global_id)}
).data == {"node": {"name": "Empire"}}
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