Codeigniter 4 Pie Chart Using Google Chart JS Example

To create a dynamic pie chart in CodeIgniter 4, you can follow this tutorial. It will guide you through the process of using Google Charts JS to fetch month-wise and year-wise data from MySQL and display it on the pie chart in codeigniter 4 projects.

In this example tutorial, you will explore how to get month-wise and year-wise data from MySQL database and display it on a Google pie chart in PHP Codeigniter 4 project.

How to Create Pie Chart in PHP Codeigniter 4 using Google Chart Js

Let’s follow the following steps to create a dynamic pie chart in PHP CodeIgniter 4 using google chart js:

Step 1: Setup Codeigniter 4 Project
Step 2: Configure CodeIgniter Project
Step 3: Create a Table in the Database
Step 4: Setup Database Credentials
Step 5: Set up the controller
Step 6: Create a View
Step 7: Define Routes
Step 8: Start Development Server

Step 1: Setup Codeigniter 4 Project

In this step, you will download the latest version of Codeigniter 4, Go to this link https://codeigniter.com/download Download Codeigniter 4 fresh new setup and unzip the setup in your local system xampp/htdocs/ . And change the download folder name “demo”

Step 2: Configure CodeIgniter Project

Next, you will set some basic configuration on the app/config/app.php file, so let’s go to application/config/config.php and open this file on text editor.

Set Base URL like this

public $baseURL = 'http://localhost:8080';
To
public $baseURL = 'http://localhost/demo/';

Step 3: Create a Table in the Database

In this step, you need to create table in database and as well as insert some data for google pie chart app in codeiginter 4. So visit your phpmyadmin panel and execute the following sql query in it:

CREATE TABLE users (
    id int(11) NOT NULL AUTO_INCREMENT COMMENT 'Primary Key',
    name varchar(100) NOT NULL COMMENT 'Name',
    email varchar(255) NOT NULL COMMENT 'Email Address',
    contact_no varchar(50) NOT NULL COMMENT 'Contact No',
    created_at varchar(20) NOT NULL COMMENT 'Created date',
    PRIMARY KEY (id)
  ) ENGINE=InnoDB DEFAULT CHARSET=latin1 COMMENT='datatable demo table' AUTO_INCREMENT=1;

  INSERT INTO users (id, name, email, contact_no, created_at) VALUES
  (1, 'Team', '[email protected]', '9000000001', '2019-01-01'),
  (2, 'Admin', '[email protected]', '9000000002', '2019-02-01'),
  (3, 'User', '[email protected]', '9000000003', '2018-03-01'),
  (4, 'Editor', '[email protected]', '9000000004', '2019-04-01'),
  (5, 'Writer', '[email protected]', '9000000005', '2017-05-01'),
  (6, 'Contact', '[email protected]', '9000000006', '2019-06-01'),
  (7, 'Manager', '[email protected]', '9000000007', '2019-07-01'),
  (8, 'John', '[email protected]', '9000000055', '2016-08-01'),
  (9, 'Merry', '[email protected]', '9000000088', '2019-09-01'),
  (10, 'Keliv', '[email protected]', '9000550088', '2019-10-01'),
  (11, 'Herry', '[email protected]', '9050550088', '2019-11-01'),
  (12, 'Mark', '[email protected]', '9050550998', '2019-12-01');

Step 4: Setup Database Credentials

In this step, you need to connect our project to the database. you need to go app/Config/Database.php and open database.php file in text editor. After opening the file in a text editor, you need to set up database credentials in this file like below.

	public $default = [
		'DSN'      => '',
		'hostname' => 'localhost',
		'username' => 'root',
		'password' => '',
		'database' => 'demo',
		'DBDriver' => 'MySQLi',
		'DBPrefix' => '',
		'pConnect' => false,
		'DBDebug'  => (ENVIRONMENT !== 'production'),
		'cacheOn'  => false,
		'cacheDir' => '',
		'charset'  => 'utf8',
		'DBCollat' => 'utf8_general_ci',
		'swapPre'  => '',
		'encrypt'  => false,
		'compress' => false,
		'strictOn' => false,
		'failover' => [],
		'port'     => 3306,
	];

Step 5: Set up the controller

In this step, Visit app/Controllers and create a controller name GooglePie.php. In this controller, you need to add the following methods into it:

<?php namespace App\Controllers;
use CodeIgniter\Controller;
use CodeIgniter\HTTP\RequestInterface;


class GooglePie extends Controller
{

    public function index() {

        $db      = \Config\Database::connect();
        $builder = $db->table('users');   

        $query = $builder->query("SELECT COUNT(id) as count,MONTHNAME(created_at) as month_name FROM users WHERE YEAR(created_at) = '" . date('Y') . "'
      GROUP BY YEAR(created_at),MONTH(created_at)");

       $query1 = $builder->query("SELECT COUNT(id) as count,YEAR(created_at) as year FROM users
      GROUP BY YEAR(created_at)");


      $data['month_wise'] = $query->getResult();
      $data['year_wise'] = $query1->getResult();
        
	  return view('home',$data);
    }

}

Step 6: Create a View

In this step, you need to create one view files name home.php and update the following code into your file:

<!Doctype html>
<html>
<head>
  <title>Codeigniter 4 Google Pie Chart Month and Year Wise Tutorial Tutsmake.com</title>
  <script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
  <script type="text/javascript">
      google.charts.load('visualization', "1", {
          packages: ['corechart']
      });
  </script>
</head>
<body>
<div class="row">
  <div class="col-md-12">
    <div id="month_pie" style="width: 900px; height: 500px; margin: 0 auto"></div>
    <div id="year_pie" style="width: 900px; height: 500px; margin: 0 auto"></div>
  </div>  
</div>
</body>
</html>

Implement Javascript code

Finally, need to implement javascript code for showing a data on google bar chart. Now we will put the code on script tag after the closing of body tag.

    <script language="JavaScript">
      // Draw the pie chart for registered users month wise
      google.charts.setOnLoadCallback(monthWiseChart);

      // Draw the pie chart for registered users year wise
      google.charts.setOnLoadCallback(yearWiseChart);
      
      //for month wise
      function monthWiseChart() {

            /* Define the chart to be drawn.*/
            var data = google.visualization.arrayToDataTable([
                ['Month', 'Users Count'],
                <?php 
                 foreach ($month_wise as $row){
                 echo "['".$row->month_name."',".$row->count."],";
                 }
                 ?>
            ]);
            var options = {
                title: 'Month Wise Registered Users Of Current Year <?php echo date("Y")?>',
                is3D: true,
            };
            /* Instantiate and draw the chart.*/
            var chart = new google.visualization.PieChart(document.getElementById('month_pie'));
            chart.draw(data, options);
      }
      // for year wise
      function yearWiseChart() {

        /* Define the chart to be drawn.*/
        var data = google.visualization.arrayToDataTable([
            ['Year', 'Users Count'],
            <?php 
             foreach ($year_wise as $row){
             echo "['".$row->year."',".$row->count."],";
             }
             ?>
        ]);
        var options = {
            title: 'Year Wise Registered Users Pie Chart',
            is3D: true,
        };
        /* Instantiate and draw the chart.*/
        var chart = new google.visualization.PieChart(document.getElementById('year_pie'));
        chart.draw(data, options);
      }
    </script>

Step 7: Define Routes

In this step, you need to create a route that renders the table into the view, place the following code in app/Config/Routes.php file.

$routes->get('/', 'GooglePie::index');

Step 8: Start Development Server

In this step, open your terminal and execute the following command to start development sever:

php spark serve

Then, Go to the browser and hit below the URL:

http://localhost:8080

Conclusion

Codeigniter 4 google pie chart example. In this tutorial, you have learned how to create google pie chart with codeigniter 4 and mysql