What are the common FuelPHP framework operations in PHP programming?

FuelPHP is a lightweight PHP development framework based on the MVC model. Its main features are fast, safe and flexible. In the FuelPHP framework, developers can complete various tasks through simple code operations. This article will introduce common operations.

1. Routing configuration

FuelPHP's routing configuration is very flexible and can specify different controllers and methods according to different URL addresses. In the routes.php file in the application directory, a series of routing rules and variables can be set up to map requests to the corresponding controller methods.

For example, the following code can redirect all /news paths to the index method of the News controller:

// routes.php
return array(
    'news' => 'news/index',
);

2. Database operation

FuelPHP The framework provides full-featured database operation classes, including support for multiple commonly used databases such as MySQL, PostgreSQL, and SQLite. It is very convenient to use the database operation class to add, delete, modify, and check data. You only need to simply call the corresponding method to complete.

The following is a simple MySQL connection and query example:

// model
class Model_News extends OrmModel {
    protected static $_table_name = 'news';
}

// controller
class Controller_News extends Controller {
    public function action_index() {
        $news = Model_News::find_all();
        return Response::forge(View::forge('news/index', array(
            'news' => $news,
        )));
    }
}

3. View rendering

FuelPHP supports multiple template engines, including PHP, Twig and Smarty et al. In the controller, you can use the View class to load and render the template file.

For example, here is an example of using the PHP template engine to render a news list:

// controller
class Controller_News extends Controller {
    public function action_index() {
        $news = Model_News::find_all();
        return Response::forge(View::forge('news/index', array(
            'news' => $news,
        )));
    }
}

// view
<?php foreach ($news as $item): ?>
    <h3><?php echo $item->title; ?></h3>
    <p><?php echo $item->content; ?></p>
<?php endforeach; ?>

4. Form processing

User-submitted form data can be processed through FuelPHP Get the Input class provided by the framework. Developers can use the methods of the Input class to obtain the values ​​of various fields in the form, and check and process them.

For example, you can use the Input::post() method in the controller to obtain the data submitted by POST, and then save it to the database:

// controller
class Controller_News extends Controller {
    public function action_create() {
        $post = Input::post();
        if (!empty($post)) {
            $news = new Model_News();
            $news->title = $post['title'];
            $news->content = $post['content'];
            $news->save();
            return Response::redirect('news');
        }
        return Response::forge(View::forge('news/create'));
    }
}

// view
<form method="post" action="<?php echo Uri::create('news/create'); ?>">
    <input type="text" name="title">
    <textarea name="content"></textarea>
    <input type="submit" value="Create">
</form>

5. Error handling

In development, errors are inevitable. The FuelPHP framework provides a complete set of error handling mechanisms, including error reporting, logging, and exception handling, making it easier for developers to discover and solve problems.

For example, the following code can configure the error handling mechanism. When the application encounters an error, it will record the error information to the log file and output a friendly error page.

// bootstrap.php
return array(
    'error' => array(
        'logger' => 'default',
        'handler' => 'prod',
    ),
    'loggers' => array(
        'default' => array(
            'file' => APPPATH.'logs/app.log',
        ),
    ),
    'profiling' => false,
    'output_compression' => false,
);

// views/errors/fuel_error.php
<!DOCTYPE html>
<html>
    <head>
        <title>Error</title>
    </head>
    <body>
        <h1>Oops!</h1>
        <p>Looks like something went wrong.</p>
    </body>
</html>

The above are common operations in the FuelPHP framework. These operations can make it easier for developers to develop PHP and improve development efficiency and coding quality.

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