FetchMore : Request executed twice every time

I am trying to implement pagination in a comment section.

I have normal visual behavior on the website. When I click the get more button, 10 new comments are added.

My problem is the request is executed twice every time. I have no idea why. The first time, it is executed with a cursor value, the second time without it. It seems that the useQuery hook is executed after each fetchMore.

Any help would be appreciated. Thanks!

component :

export default ({ event }) => {    const { data: moreCommentsData, fetchMore } = useQuery(getMoreCommentsQuery, {      variables: {        id: event.id,      },      fetchPolicy: "cache-and-network",    });    const getMoreComments = () => {      const cursor =        moreCommentsData.event.comments[          moreCommentsData.event.comments.length - 1        ];      fetchMore({        variables: {          id: event.id,          cursor: cursor.id,        },       updateQuery: (prev, { fetchMoreResult, ...rest }) => {          return {            ...fetchMoreResult,            event: {              ...fetchMoreResult.event,              comments: [                ...prev.event.comments,                ...fetchMoreResult.event.comments,              ],              commentCount: fetchMoreResult.event.commentCount,           },          };        },      });    };    return (      <Container>        {moreCommentsData &&        moreCommentsData.event &&        moreCommentsData.event.comments          ? moreCommentsData.event.comments.map((c) => c.text + " ")          : ""}          <Button content="Load More" basic onClick={() => getMoreComments()} />      </Container>    );   };  

query :

const getMoreCommentsQuery = gql`    query($id: ID, $cursor: ID) {      event(id: $id) {        id        comments(cursor: $cursor) {          id          text          author {            id            displayName            photoURL          }        }      }    }  `;  

https://stackoverflow.com/questions/66441463/fetchmore-request-executed-twice-every-time March 02, 2021 at 10:38PM