I'm using express-graphql along with the following query:
invitations {
sent
received
}
The schema definition (simplified) is as follows:
const InvitationType = new GraphQLObjectType({
name: 'InvitationType',
description: 'Friends invitations',
fields: {
sent: {
type: new GraphQLList(GraphQLString),
description: 'Invitations sent to friends.',
resolve() {
return ['sentA'];
}
},
received: {
type: new GraphQLList(GraphQLString),
description: 'Invitations received from friends.',
resolve() {
return ['receivedA', 'receivedB'];
}
}
}
});
// Root schema
const schema = new GraphQLSchema({
query: new GraphQLObjectType({
name: 'RootQueryType',
fields: {
invitations: {
type: InvitationType // no resolve() method here.
}
}
})
});
However the resolve methods are never called for sent and received fields. The query above returns:
{data: {invitations: {sent: null, received: null}}}
Is there any way to resolve the nested fields (sent and received) without defining a resolve() method on parent (invitations) field?
This worked for me! According to GraphQL Documentation, The execution will continue if the resolve method returns a non-scalar. So the following code works:
// Root schema
const schema = new GraphQLSchema({
query: new GraphQLObjectType({
name: 'RootQueryType',
fields: {
invitations: {
type: InvitationType,
resolve: () => ({}) // Resolve returns an object.
}
}
})
});
Hope this helps. Cheers!