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Slim 3 Framework Tutorial: Create, Configure, Load and Access Database

Ahsan Zameer
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This is the second article of the slim 3 framework tutorial. In my previous article we have successfully downloaded slim 3 framework and worked with routes and templates.

If you directly land on this page just to understand how to access database in slim 3 then this tutorial is for you. But if you want to develop website using slim 3 then please also read my previous post for better understanding.

Also read: Slim 3 Framework Tutorial: Download, Setup, Create Routes and Template

In this slim 3 framework tutorial I am going to configure and access database. We already created home page and about page in our previous post. In this post I will create blog listing page and show records from database.


Create, Configure, Load and Access Database in Slim 3 Framework:

Following are the step by step process of how we will create blog page.

Create Database:

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Create database demo;
Use demo;
 

Create Database Table:

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CREATE TABLE `blog` (
`id` INT(11) NOT NULL AUTO_INCREMENT,
`title` VARCHAR(255) NULL DEFAULT NULL,
`blog_content` TEXT NULL,
`author` VARCHAR(50) NULL DEFAULT NULL,
`created` DATETIME NULL DEFAULT NULL,
PRIMARY KEY (`id`)
)
ENGINE=InnoDB
;
 

Set Database Variable in settings.php:

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<?php
return [
    'settings' => [
        'displayErrorDetails' => true, // set to true in production
        'addContentLengthHeader' => false,
        
       'db' =>[
                'host'=> 'localhost',
                'user'=> 'root',
                'password'=> '',
                'database'=> 'demo',
            ]  
        
    ],
];
 

Database Connection in index.php:

This is a beginner tutorial so I am using mysqli class to access database but it is better to use PDO.

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$container['db'] = function($container){
$getSettings = $container->get('settings')['db'];
$mysqli = new mysqli($getSettings['host'],$getSettings['user'],$getSettings['password'],$getSettings['database']);
return $mysqli;
};
 

Create Route for Blog:

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      $app->get('/blog',function(Request $request, Response $response, array $args){
$qry = "select * from blog";
$rs = $this->db->query($qry);
while($row = $rs->fetch_assoc()){
$blogEntries[] = $row;
}
$data = array(
"main_heading" => "Blog",
"blog_entries" =>$blogEntries
);
return $this->view->render($response, 'blog.php',$data);
});
 

View Blog.php:

Blog.php file is located in templates folder.

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<?php include('layouts/header.php');?>
 
<header class="bg-primary text-white">
<div class="container text-center">
<h1><?php echo $main_heading; ?></h1>
</div>
</header>
 
<section style="padding:20px;">
<div class="container">
 
<?php
if(is_array($blog_entries) && count($blog_entries) > 0)
{
foreach($blog_entries  as $singleEntry)
{
echo '<div class="row">';
echo '<div class="col-lg-12" >';
echo '<h3>'.$singleEntry['title'].'</h3>';
echo '<small> posted by '.$singleEntry['author'].'</small>';
echo '<p class="lead">'.$singleEntry['blog_content'].'</p>';
echo '<br>';
echo '</div>';
echo '</div>';
echo '<hr>';
}
}
?>
 
</div>
</section>
 
<?php include('layouts/footer.php');?>
 

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