Corvid Analytics page's code

page.js

import wixData from 'wix-data';
import _ from 'lodash';

$w.onReady(function () {
  const getDataPromise = wixData.query('views').find();

  // The iframe is ready
  $w('#html1').onMessage(async ({ data }) => {
    if (data.type === 'ready') {
      const results = await getDataPromise;

      // Group the rows by date and map it to DataTable format 
      const chartData = Object.entries(
        _.groupBy(results.items, (item) => item._createdDate.toDateString())
      ).map(([date, entities]) => [new Date(date), entities.length]);

      // Post back to the page with the data
      $w('#html1').postMessage({
        type: 'graph',
        data: chartData,
      });
    }
  });
});