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我正在研究 GitHunt-React 和 GitHunt-API 中的 Apollo pub-sub。当我运行这些应用程序并输入新评论时，评论由提交调用保存，然后 updateQueries 代码块在此处运行：

const CommentsPageWithMutations = graphql(SUBMIT_COMMENT_MUTATION, {
  props({ ownProps, mutate }) {
    console.log('in CommentsPageWithMutations');
    return {
      submit({ repoFullName, commentContent }) { <==RUNS THE MUTATION
        debugger;
        return mutate({
          variables: { repoFullName, commentContent },
          optimisticResponse: {
            __typename: 'Mutation',
            submitComment: {
              __typename: 'Comment',
              id: null,
              postedBy: ownProps.currentUser,
              createdAt: +new Date,
              content: commentContent,
            },
          },
          updateQueries: {
            Comment: (prev, { mutationResult }) => {
              debugger; // <== RUNS AFTER THE MUTATION IS SENT TO SERVER
              const newComment = mutationResult.data.submitComment;
              if (isDuplicateComment(newComment, prev.entry.comments)) {
                return prev;
              }
              return update(prev, {
                entry: {
                  comments: {
                    $unshift: [newComment],
                  },
                },
              });
            },
          },
        });
      },
    };
  },
})(CommentsPage);

我已将此代码复制到我的应用程序中。突变已正确保存，但 updateQueries 代码块未运行：

const CreateIMPageWithMutations = graphql(CREATE_IM_MUTATION, {
    props({ ownProps, mutate }) {
        debugger;
        return {
            submit({ fromID, toID, msgText }) { <==SAVES SUCCESSFULLY
                debugger;
                return mutate({
                    variables: {
                        "fromID": fromID,
                        "toID": toID,
                        "msgText": msgText
                    },
                    optimisticResponse: {
                        __typename: 'Mutation',
                        createIM: {
                            __typename: 'createIM',
                            fromID: fromID,
                            toID: toID,
                            createdAt: +new Date,
                            msgText: msgText,
                        },
                    },
                    updateQueries: {
                        createIM: (prev, { mutationResult }) => {
                            debugger; <== THIS CODE BLOCK IS NEVER CALLED
                            const newMsg = mutationResult.data.createIM;

                            return update(prev, {
                                entry: {
                                    IMs: {
                                        $unshift: [newMsg],
                                    },
                                },
                            });
                        },
                    },
                });
            },
        };
    },
})(CreateIM);

为什么我的 updateQueries 调用不运行？提前感谢所有人提供的任何信息。

更新：每个请求，这里是 CREATE_IM_MUTATION 的代码：

const CREATE_IM_MUTATION = gql`
                mutation createIM ($fromID: String!, $toID: String!, $msgText: String!){
                    createIM(fromID: $fromID, toID: $toID, msgText: $msgText){
                        fromID
                        toID
                        msgText
                    }
                }
`;

更新：根据 Slack 上@fabio_oliveira 的请求，这是我正在更新的查询：

const GETIMS_QUERY = gql`
query getIMs($fromID: String!, $toID: String!){
  instant_message(fromID:$fromID, toID: $toID){
    id,
    fromID,
    toID,
    msgText
  }
}  `;
4

1 回答 1

2

Slack 上的@fabio_oliveira 提供了答案。在 updateQueries 中，我不得不将键的名称更改为 getIMS，即原始数据收集查询的名称——而不是Mutation 查询的名称：

                updateQueries: {
                     getIMs: (prev, { mutationResult }) => {
                        debugger;
                        [.....]
于 2016-10-22T17:14:08.970 回答