等待 useLazyQuery 响应

Question

我需要在按下提交按钮时调用查询，然后处理响应。

我需要这样的东西：

const [checkEmail] = useLazyQuery(CHECK_EMAIL)
const handleSubmit = async () => {
  const res = await checkEmail({ variables: { email: values.email }})
  console.log(res) // handle response
}

尝试 #1：

const [checkEmail, { data }] = useLazyQuery(CHECK_EMAIL)
const handleSubmit = async () => {
  const res = await checkEmail({ variables: { email: values.email }})
  console.log(data) // undefined the first time
}

提前致谢！

Answer 1

毕竟，这是我的解决方案。

export function useLazyQuery<TData = any, TVariables = OperationVariables>(query: DocumentNode) {
  const client = useApolloClient()
  return React.useCallback(
    (variables: TVariables) =>
      client.query<TData, TVariables>({
        query: query,
        variables: variables,
      }),
    [client]
  )
}

Answer 2

这对我有用：

const { refetch } = useQuery(CHECK_EMAIL, {
  skip: !values.email
})

const handleSubmit = async () => {
  const res = await refetch({ variables: { email: values.email }})
  console.log(res)
}

Answer 3

您还可以像这样使用钩子onCompleted选项：useLazyQuery

const [checkEmail] = useLazyQuery(CHECK_EMAIL, {
  onCompleted: (data) => {
    console.log(data);
  }
});

const handleSubmit = () => {
  checkEmail({ variables: { email: values.email }});
}