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How to use template engine in EasyPHP framework?

Jun 03, 2023 am 10:40 AM
template engineskillseasyphp

EasyPHP is a lightweight PHP framework that provides many useful tools and features to simplify web development. Among them, the template engine is a very important function, which can make page design and data display more flexible and easier to maintain. This article will introduce how to use the template engine in the EasyPHP framework to help you better develop web applications.

1. Understanding the template engine

Before introducing the template engine of the EasyPHP framework, we first need to understand what a template engine is. Simply put, a template engine is a tool used to combine data and UI design. It separates data and UI containers, allowing developers to focus more on business logic and data processing. In the template engine, we can use a series of template syntax to describe UI layout and data display, and finally get a complete HTML page.

Common template engines include Smarty, Twig, Blade, etc. They all provide rich template syntax and functions to facilitate the work of developers.

2. Use of EasyPHP template engine

The template engine used by the EasyPHP framework is Smarty. It is a mature and efficient template engine with rich template syntax and functions that can satisfy most Web application requirements. In this section, we will introduce how to use Smarty template engine in EasyPHP framework.

1. Install Smarty

First, you need to install the Smarty template engine in your EasyPHP framework. You can use Composer to install it, or you can manually download the Smarty compressed package and extract it to the vendor directory of the EasyPHP framework. Here we take manual download and installation as an example:

1.1. Download Smarty compression package

Download the latest version of Smarty compression from Smarty’s official website (https://www.smarty.net/) package (.zip or .tar.gz).

1.2. Unzip it into the vendor directory of the EasyPHP framework

Extract the downloaded Smarty compressed package into the vendor directory of the EasyPHP framework. You can directly overwrite the original Smarty directory in the vendor directory.

2. Configure the template engine of the EasyPHP framework

Next, we need to configure the template engine of the EasyPHP framework so that it can use Smarty.

2.1. Edit the configuration file

Open the config.php file in the config directory of the EasyPHP framework and find the view configuration part (View Configuration).

Change the view class (view_class) to Smarty and the view file suffix (view_suffix) to .tpl.

'view_class'         => '    hink    emplatedriverSmarty',
'view_suffix'        => 'tpl',

2.2. Configure Smarty

Open the template.php file in the config directory of the EasyPHP framework and find the configuration part of Smarty.

Configure according to your own needs. The more important parameters are as follows:

  • left_delimiter and right_delimiter: Smarty’s template syntax uses braces {}, but in the EasyPHP framework, {} is already used by PHP, so other symbols need to be used as Smarty template syntax symbols. left_delimiter and right_delimiter are the left and right delimiters of Smarty template syntax. Other symbols can be used, such as , [], etc.
  • compile_dir and cache_dir: Smarty will save the compiled template file in the compile_dir directory, and the cache file will be saved in the cache_dir directory. It is recommended to set these two directories as folders under the runtime directory of the EasyPHP framework.
'type'               => 'Smarty',
'auto_reload'        => true,
'left_delimiter'     => '<{',
'right_delimiter'    => '}>',
'caching'            => false,
'cache_lifetime'     => 0,
'cache_dir'          => RUNTIME_PATH . 'cache' . DS . 'smarty' . DS,
'compile_dir'        => RUNTIME_PATH . 'temp' . DS . 'smarty' . DS,

3. Using the template engine

Using the template engine in the EasyPHP framework is very simple, just follow the following steps.

1. Create a template file

In the view directory of the EasyPHP framework, create a template file with a .tpl suffix, such as hello.tpl.

Use Smarty's template syntax in the template file to describe the page layout and data display, for example:

<!DOCTYPE html>
<html>
<head>
    <title>{$title}</title>
</head>
<body>
    <h1 id="message">{$message}</h1>
</body>
</html>

2. Render the template file

In the controller, call the view The assign function of the class is used to set the data that needs to be displayed in the template file.

public function index()
{
    $this->view->assign([
        'title'   => 'Hello, EasyPHP!',
        'message' => 'Welcome to EasyPHP!',
    ]);
    return $this->view->fetch('hello');
}

Use the fetch function to render the template file and return the rendered result.

3. Display rendering results

In web applications, the rendering results need to be displayed on the page, so page rendering needs to be performed in the controller.

public function index()
{
    $this->view->assign([
        'title'   => 'Hello, EasyPHP!',
        'message' => 'Welcome to EasyPHP!',
    ]);
    $content = $this->view->fetch('hello');
    $this->response->setContent($content);
    return $this->response;
}

The above is the process of using the template engine in the EasyPHP framework, which is very simple. You only need to use Smarty's template syntax in the template file to describe the page layout and data display, then use the assign function of the view class in the controller to set the data that needs to be displayed, use the fetch function to render the template file, and display the rendering results in on the page.

Summary

The template engine is an indispensable tool in web development, which can be used to simplify the work of page design and data display. The EasyPHP framework provides a Smarty-compatible template engine and is very simple to use. Just follow the above steps to configure and use it.

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