polymer-datatables-export.html

<link rel="import" href="../polymer/polymer.html">

<polymer-element name="polymer-datatables-export" attributes="columns data filename exportTime tableApi">
  <template></template>
  <script src="../lodash/lodash.js"></script>
  <script>
  Polymer({
    publish: {
      filename: 'data-export',
      data: [],
      exportTime: null,
      exportData: [],
      exportAll: true,
    },
    attached: function() {
      function loadScript(url) {
        var script = document.createElement('script');
        script.type = 'text/javascript';
        script.src = url;
        document.body.appendChild(script);
      }
      // Load Moment
      if( typeof window.moment == 'undefined' ) {
        loadScript("../moment/min/moment.min.js");
      }
    },
    export: function(event, detail, sender) {
      var poly = this;
      poly.exportData = [];

      if( ! poly.exportTime ) {
        poly.exportTime = moment().format('-MM-DD-YY');
      }

      // Add titles
      var titles = [];
      var keys = [];
      _.each(poly.columns, function(col) {
        if( col.data ) {
          keys.push( col.data );
          titles.push( col.title || col.data );
        }
      });
      // Add data for csv
      poly.exportData.push(titles);

      var data;
      if( poly.exportAll ) {
        data = _.clone(poly.data);
      } else {
        data = poly.tableApi.rows({
          order:  'applied',
          search: 'applied',
          page:   'all',
        }).data();
      }

      _.each( data, function(row) {
        var d = [];
        _.each(keys, function(key) {
          var cellData = row[key] || '';
          if (typeof cellData === 'string') {
            cellData = cellData.replace(/,/g, '').replace(/^\s+|\s+$/g, '');
          }
          d.push( cellData );
        });
        poly.exportData.push(d);
      });
    },
  });
  </script>
</polymer-element>