charts.js.coffee in effective_datatables-2.12.1

- old
+ new

@@ -1,15 +1,26 @@
 initializeCharts = ->
+  $charts = $('.effective-datatables-chart:not(.initialized)')
+  return unless $charts.length > 0
+
+  if typeof(google) != 'undefined' && typeof(google.charts) != 'undefined'
+    google.charts.load('current', { packages: ['corechart'] })
+    google.charts.setOnLoadCallback(renderCharts)
+
+  $charts.addClass('initialized')
+
+renderCharts = ->
+  return if (typeof(google) == 'undefined' || typeof(google.visualization) == 'undefined')
+
   $('.effective-datatables-chart').each ->
     $chart = $(this)
 
     data = $chart.data('data') || []
     type = $chart.data('type') || 'BarChart'
     options = $chart.data('options') || {}
 
-    if google
-      chart = new google.visualization[type](document.getElementById($chart.attr('id')))
-      chart.draw(google.visualization.arrayToDataTable(data), options)
+    chart = new google.visualization[type](document.getElementById($chart.attr('id')))
+    chart.draw(google.visualization.arrayToDataTable(data), options)
 
 $ -> initializeCharts()
 $(document).on 'page:change', -> initializeCharts()
 $(document).on 'turbolinks:load', -> initializeCharts()