javascript - retrieve data from mongodb and link it with google charts -


i'd retrieve data database (mongodb) , data i'd draw à pie chart using google charts. in first case have collection called user , each user has boolean attribute called (paid), i'd count how many paid users , free users , basing on results draw pie chart percentage of each kind of users

this try tried long time i'dont arrive show chart,

thanks :)

<?php $connection = new mongoclient(); $collection = $connection->pato->user;  $cursor = $collection->find(); $cursor = $collection->find(array("paid"=>true)); $x=$cursor->count(); $cursor = $collection->find(array("paid"=>false)); $y=$cursor->count(); $myurl[]="['option','value']"; $myurl[]=[['free users', $y],['paid users', $x]];  ?> <html>   <head>     <!--load ajax api-->     <body>    <script type="text/javascript" src="https://www.google.com/jsapi"></script>   </head>        <script type="text/javascript">  google.load('visualization', '1', {'packages':['corechart']});       google.setonloadcallback(drawchart);   function drawchart()  {     var data=google.visualization.arraytodatatable([     <?echo(implode(",",$myurl));?>     ]);     // set chart options         var options = {'title':'user statistics',                        'width':400,                        'height':300};          // instantiate , draw our chart, passing in options.         chart = new google.visualization.piechart(document.getelementbyid('userstatsdiv'));         google.visualization.events.addlistener(chart, 'select', selecthandler);         chart.draw(data, options);  }</script>    <body>  <div id="usagestatsdiv" style="width:700; height:500"></div> </body> </html>

you have syntax error in php, , fixing that, data structure not quite right visualization api. try this:

$myurl = array(     array('option', 'value'),     array('free users', $y),     array('paid users', $x) );

and in javascript:

var data = google.visualization.arraytodatatable(<?php echo json_encode($myurl, json_numeric_check); ?>);

using json_encode allows transition php arrays javascript arrays , objects without worrying syntax of array , object construction.


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