Function makeUpdater

client/src/mutations/upsertLinkMutation.ts:24–61

(parentTopicId: string | null)

}

function makeUpdater(parentTopicId: string | null) {
  if (!parentTopicId) return null

  return (store: RecordSourceSelectorProxy) => {
    const connectionId = ConnectionHandler.getConnectionID(parentTopicId,
      'ViewTopicPage_topic_children', { searchString: '' })

    if (!connectionId) {
      console.log('no connection id found under topic:', parentTopicId)
      return
    }

    const connection = store.get(connectionId)
    if (!connection) return

    const payload = store.getRootField('upsertLink')
    if (!payload) {
      console.log('payload not found in mutation response')
      return
    }

    if (hasErrors(payload)) return

    const linkEdge = payload.getLinkedRecord('linkEdge')
    if (!linkEdge) {
      console.log('no topic edge found in mutation response')
      return
    }

    const prevEdges = connection.getLinkedRecords('edges') || []
    const index = prevEdges.findIndex((edge) => {
      const node = edge.getLinkedRecord('node')
      return node?.getValue('__typename') == 'Link'
    })
    prevEdges.splice(index, 0, linkEdge)
    connection.setLinkedRecords(prevEdges, 'edges')
  }
}

const query = graphql`
  mutation upsertLinkMutation($input: UpsertLinkInput!) {