如何让谷歌分析报告来自反应组件的 API 请求？

Question

I am trying to build an analytics dashboard with React/Gatsby and the Google Analytics Reporting API v4. I have included the scripts in my layout component from the google api quickstart guide .

I know it's loading on the page, because in the browser developer tools console I can access window.gapi and the google sign in button appears correctly. But in my page component, I have a useEffect hook. When the component mounts, I want to make a request using window.gapi.client.request(...) .

I tried wrapping the request in this: if (typeof window.== undefined) {... } as per the gatsby docs

Layout.js

      <Helmet>
        <meta
          name="google-signin-client_id"
          content="MYCLIENTID"
        />
        <meta
          name="google-signin-scope"
          content="https://www.googleapis.com/auth/analytics.readonly"
        />
        <script src="https://apis.google.com/js/client:platform.js"></script>
      </Helmet>

Index.js

  useEffect(querySuccessfulSubmissions, [])

  function querySuccessfulSubmissions() {
    if (typeof window !== `undefined`) {
      window.gapi.client
        .request({
          path: "/v4/reports:batchGet",
          root: "https://analyticsreporting.googleapis.com/",
          method: "POST",
          body: {
            reportRequests: [
              {
                viewId: "MYVIEWID",
                samplingLevel: "LARGE",
                dateRanges: [
                  {
                    startDate: "365daysAgo",
                    endDate: "yesterday",
                  },
                ],
                metrics: [
                  {
                    expression: `ga:goal1Completions`,
                    alias: "",
                  },
                ],
                dimensions: [
                  {
                    name: "ga:yearMonth",
                  },
                ],
              },
            ],
          },
        })
        .then(response => console.log('success'))
    }
  }

I expect to have access to window.gapi from the useEffect hook, but I get TypeError: window.gapi is undefined .

Answer 1

You can try using the setInterval function to see when window.gapi is loaded, then clear it after it loads:

useEffect(window.interval = setInterval(waitForAPI, 1000), [])

waitForAPI() {
    if (window.gapi.client.request !== undefined) {
        querySuccessfulSubmissions();
        clearInterval( window.interval );
    }
}