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PHP Build a REST API with PHP CRUD API in Slim Accessing Data

Kennard McGill
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.a{fill-rule:evenodd;}techdegree seal-36
Kennard McGill
Full Stack JavaScript Techdegree Graduate 43,179 Points
Posted by Kennard McGill
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Kennard McGill
Full Stack JavaScript Techdegree Graduate 43,179 Points

Fatal Error: After following all the steps to this point. What's going on?

I followed the video twice and I still ended up with a Fatal Error message. Uncaught Error: Function name must be a string in C:\xampp\htdocs\treehouse\php_rest_api\public\index.php:22 Stack trace: #0 {main} thrown in C:\xampp\htdocs\treehouse\php_rest_api\public\index.php on line 22

Routes.php

<?php
use Slim\Http\Request;
use Slim\Http\Response;

// Routes

    $app->get('/[{name}]', function (Request $request, Response $response, array $args) {
        $result = $this->course->getCourses();
        return $response->withJson($result, 200, JSON_PRETTY_PRINT);
    };

Course.php

<?php
namespace App\Model;
use App\Exception\ApiException;

class Course
{
    protected $database;
    public function __construct(\PDO $database)
    {
        $this->database = $database;
    }
    public function getCourses()
    {
        $statement = $this->database->prepare(
            'SELECT * FROM courses ORDER BY id'
        );
        $statement->execute();
        return $statement->fecthAll();

    }
}

Dependencies.php

<?php
// DIC configuration
$container = $app->getContainer();
// view renderer
$container['renderer'] = function ($c) {
    $settings = $c->get('settings')['renderer'];
    return new \Slim\Views\PhpRenderer($settings['template_path']);
};
// monolog
$container['logger'] = function ($c) {
    $settings = $c->get('settings')['logger'];
    $logger = new \Monolog\Logger($settings['name']);
    $logger->pushProcessor(new \Monolog\Processor\UidProcessor());
    $logger->pushHandler(new \Monolog\Handler\StreamHandler($settings['path'], $settings['level']));
    return $logger;
    };
// API
$container['api'] = function($c) {
    $api = $c->get('settings')['api'];
    return $api;
};
$container['db'] = function($c) {
    $db = $c->get('settings')['db'];
    $pdo = new PDO($db['dsn'].':'.$db['database']);
    $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    $pdo->setAttribute(PDO::ATTR_DEFAULT_FETCH_MODE, PDO::FETCH_ASSOC);
    return $pdo;
};
$container['course'] = function($c) {
    return new App\Model\Course($c->get('db'));
};

index.php

<?php
if (PHP_SAPI == 'cli-server') {
    // To help the built-in PHP dev server, check if the request was actually for
    // something which should probably be served as a static file
    $url  = parse_url($_SERVER['REQUEST_URI']);
    $file = __DIR__ . $url['path'];
    if (is_file($file)) {
        return false;
    }
}

require __DIR__ . '/../vendor/autoload.php';

session_start(); 

// Instantiate the app
$settings = require __DIR__ . '/../src/settings.php';
$app = new \Slim\App($settings);

// Set up dependencies
$dependencies = require __DIR__ . '/../src/dependencies.php';
*line 22 .....* $dependencies($app);

// Register middleware
$middleware = require __DIR__ . '/../src/middleware.php';
$middleware($app);

//Register routes
$routes = require __DIR__ . '/../src/routes.php';
*line..... 30*  $routes($app);

// Run app
$app->run();
Kennard McGill
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
Kennard McGill
Full Stack JavaScript Techdegree Graduate 43,179 Points
Kennard McGill
.a{fill-rule:evenodd;}techdegree seal-36
Kennard McGill
Full Stack JavaScript Techdegree Graduate 43,179 Points

Seems like this error goes away and the output shows if I comment out the dependencies and routes line below

Line 22 //$dependencies($app);

Line 30 //$routes($app);

Jonathan Grieve
Jonathan Grieve
Treehouse Moderator 91,253 Points
Jonathan Grieve
Jonathan Grieve
Treehouse Moderator 91,253 Points

Hi Kennard,

I was able to reproduce this fix as well but I can't help but wonder if this is going to cause us problems again further down the line.

Can anyone confirm if this is the proper fix for the problem? The fact that we get a Fatal error: rather than a Slim Application Error indicates that we're using the right Namespace but I don't understand how commenting out those lines produces the required output because are those not what actives the routes and containers?

Alena Holligan

2 Answers

Alena Holligan
STAFF
Alena Holligan
Treehouse Teacher
Alena Holligan
Alena Holligan
Treehouse Teacher

You index.php page should end like this

// Set up dependencies
require __DIR__ . '/../src/dependencies.php';

// Register middleware
require __DIR__ . '/../src/middleware.php';

// Register routes
require __DIR__ . '/../src/routes.php';

// Run app
$app->run();
Jonathan Grieve
Jonathan Grieve
Treehouse Moderator 91,253 Points
Jonathan Grieve
Jonathan Grieve
Treehouse Moderator 91,253 Points

Thanks Alena, That should confirm to Kennard and I our code is fixed properly.

And I now know where the output in the browser is coming from. 😂