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May 15, 2019 at 2:06 pm #25186

Ganesh

Hi, I am looking for similar drop down filter in php but with database search. I want to filter my charts using Year-wise that will display total number of appointments in each skill for that selected year.

Here is my php code where I tried to plot two graphs, one for all years and next for selection by year.

Much thanks for your help please.

<?php
 
$dataPoints = array();
$dataPoints2018 = array();
//Best practice is to create a separate file for handling connection to database
try{
     // Creating a new connection.
    // Replace your-hostname, your-db, your-username, your-password according to your database
    $link = new \PDO(   'mysql:host=localhost;dbname=project;charset=utf8mb4', //'mysql:host=localhost;dbname=canvasjs_db;charset=utf8mb4',
                        'root', //'root',
                        '', //'',
                        array(
                            \PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
                            \PDO::ATTR_PERSISTENT => false
                        )
                    );
	// qurey for chart render for total appointments for all time topic-wise
    $handle = $link->prepare("SELECT COUNT(*) as count, a.id_skill, a.ap_meet_date, s.skill FROM appointment a,skills_data s WHERE a.id_skill=s.id_skill and a.ap_status = 'complete' GROUP BY <code>id_skill</code>");
    $handle->execute(); 
    $result = $handle->fetchAll(\PDO::FETCH_OBJ);
    
    foreach($result as $row){
        array_push($dataPoints, array("label"=> $row->skill, "y"=> $row->count));
    }
    $link = null;
    
    
    // OTHER USEFUL QUERIES
    
    // qurey for disticnt years in appointment table
    $year = ("SELECT DISTINCT YEAR(ap_meet_date) FROM appointment As YEAR");
    
    // qurey for chart render for total appointments topic-wise in each year
    $sesult_by_year = ("SELECT a.id_skill, YEAR(a.ap_meet_date) As YEAR, s.skill,COUNT(*) as count FROM appointment a,skills_data s WHERE a.id_skill=s.id_skill and a.ap_status = 'complete' GROUP BY <code>id_skill</code>, <code>YEAR</code> ORDER BY <code>YEAR</code>");
    
    // example query for 2017 and 2018 that can be used to print directly for 2017 and 2018
    $result_2017 = ("SELECT a.id_skill, YEAR(a.ap_meet_date) As YEAR, s.skill,COUNT(*) as count FROM appointment a,skills_data s WHERE a.id_skill=s.id_skill AND a.ap_status = 'complete' AND YEAR(a.ap_meet_date) = '2017' GROUP BY <code>id_skill</code>");
    $result_2018 = ("SELECT a.id_skill, YEAR(a.ap_meet_date) As YEAR, s.skill,COUNT(*) as count FROM appointment a,skills_data s WHERE a.id_skill=s.id_skill AND a.ap_status = 'complete' AND YEAR(a.ap_meet_date) = '2018' GROUP BY <code>id_skill</code>");
    
    foreach($result as $row){
        array_push($dataPoints2018, array("label"=> $row->skill, "y"=> $row->count));
    }
    $link = null;
		
}
catch(\PDOException $ex){
    print($ex->getMessage());
}
	
?>
<!DOCTYPE HTML>
<html>
<head> 

<!-- Script to render pie chart for total count in all years   -->
<script>
window.onload = function () {
 
var chart = new CanvasJS.Chart("chartContainer", {
	animationEnabled: true,
	exportEnabled: true,
	theme: "light1", // "light1", "light2", "dark1", "dark2"
	title:{
		text: "Skills Distribution"
	},
	data: [{
		type: "pie", //change type to bar, line, area, pie, etc  
		startAngle: 25,
		toolTipContent: "<b>{label}</b>: {y}",
// 		toolTipContent: "<b>{label}</b>: {y}%",
		showInLegend: "true",
		legendText: "{label}",
		indexLabelFontSize: 16,
		indexLabelPlacement: "inside",
		indexLabel: "{y}",
// 		indexLabel: "{label} - {y}",
// 		indexLabel: "{label} - {y}%",
		dataPoints: <?php echo json_encode($dataPoints, JSON_NUMERIC_CHECK); ?>
	}]
});
chart.render();
 
}
</script>

</head>
<body>

<!-- Renders pie chart for total count in all years   -->
<div id="chartContainer" style="height: 370px; width: 900px;"></div>

<!-- To render pie chart based on Dropdown filter using database   -->
<!-- Dropdown filter using database   -->
<br/>
<select class="dropdown" id="dd">
    <option value="" selected="selected">Select Year</option>
    <?php
    if (! empty($distinct_years)) {
        foreach ($distinct_years as $key => $value) {
            echo '<option value="' . $distinct_years[$key]['YEAR'] . '">' . $distinct_years[$key]['YEAR'] . '</option>';
             }
         }
    ?>
</select>


<!-- To render pie chart based on Dropdown filter using database   -->
<script type="text/javascript">
var dataPoints = [];
var chart = new CanvasJS.Chart("chartContainer2018",
{
	animationEnabled: true,
	exportEnabled: true,
	theme: "light1", // "light1", "light2", "dark1", "dark2"
  },
	data: [{
    showInLegend: true,
    type: 'pie',
    startAngle: 25,
	toolTipContent: "<b>{label}</b>: {y}",
    showInLegend: true,
    legendText: "{label}",
    dataPoints2018: <?php echo json_encode($dataPoints2018, JSON_NUMERIC_CHECK); ?>
//     dataPoints: dataPoints
	}]
});

$( ".dropdown" ).change(function() {
	chart.options.data[0].dataPoints2018 = [];
  var e = document.getElementById("dd");
	var selected = e.options[e.selectedIndex].value;
	YEAR = jsonData[selected];
//   dps = jsonData[selected];
  for(var i in YEAR) {
  	var xVal = dps[i].x;
    chart.options.data[0].dataPoints2018.push({x: new Date(YEAR), y: YEAR[i].y});
  }
  chart.render();
});

</script>
<div id="chartContainer2018" style="height: 370px; width: 900px;"></div>

<script src="https://canvasjs.com/assets/script/canvasjs.min.js"></script>
</body>
</html>