relayjs - In a GraphQL/Relay mutation that creates a model, is there a way to get back the model ID? -

we're using relay , graphql in new project.

we've got relay mutation creates new model in db:

export default class addcampaignmutation extends relay.mutation {     getmutation() {         return relay.ql`mutation { addcampaign }`;     }     getvariables() {         return {             type: this.props.campaigntype         };     }     getfatquery() {         return relay.ql`             fragment on addcampaignpayload {                 campaignedge                 viewer             }         `;     }     getconfigs() {         return [{             type: 'range_add',             parentname: 'viewer',             parentid: this.props.viewer.id,             connectionname: 'campaigns',             edgename: 'campaignedge',             rangebehaviors: {               '': 'append',             },         }];     }     static fragments = {         viewer: () => relay.ql`             fragment on user {                 id             }         `,     }; } 

however, since none of components querying range specified in range_add (viewer { campaigns }), relay intelligently excludes query addcampaignpayload.

this results in console warning:

warning: writerelayupdatepayload(): expected response payload include newly created edge `campaignedge` , `node` field. did forget update `range_add` mutation config? 

i want id of newly created model, can navigate client it. example, getting new campaignedge, want send client /campaigns/${campaignedge.node.id}.

is there way tell relay fetch edge? have configured mutation correctly?

you can use required_children in context. more details, see https://github.com/facebook/relay/issues/237 , https://github.com/facebook/relay/issues/236.

required_children lets specify data dependency pattern.