Template Engine Smarty

A ProcessWire module adding Smarty to the TemplateEngineFactory.

Requirements

• ProcessWire 3.0 or newer
• TemplateEngineFactory 2.0 or newer
• PHP 7.0 or newer
• Composer

The 1.x version of this module is available on the 1.x branch. Use this version if you still use TemplateEngineFactory 1.x.

Installation

Execute the following command in the root directory of your ProcessWire installation:

composer require blue-tomato/template-engine-smarty:^2.0

This will install the TemplateEngineSmarty and TemplateEngineFactory modules in one step. Afterwards, don't forget to enable Smarty as engine in the TemplateEngineFactory module's configuration.

ℹ️ This module includes test dependencies. If you are installing on production with composer install, make sure to pass the --no-dev flag to omit autoloading any unnecessary test dependencies!.

Configuration

The module offers the following configuration:

• Template files suffix The suffix of the Smarty template files, defaults to tpl.
• Provide ProcessWire API variables in Smarty templates API variables ($pages, $input, $config...) are accessible in Smarty, e.g. {{ config }} for the config API variable.
• Debug If enabled, Smarty outputs debug information.
• Compile Check If enabled, templates are recompiled whenever the source code changes.
• Error Reporting If set to false, Smarty will silently ignore invalid variables (variables and or attributes/methods that do not exist) and replace them with a null value. When set to true, Smarty throws an exception instead
• Escape HTML If enabled, templates will auto-escape variables. If you are using ProcessWire textformatters to escape field values, do not enable this feature.

Extending Smarty

It is possible to extend Smarty after it has been initialized by the module. Hook the method TemplateEngineSmarty::initSmarty to register custom functions, extensions, global variables, filters etc.

Here is an example how you can use the provided hook to attach a custom function.

function foo_function($params, $smarty) {
  return 'bar';
};

wire()->addHookAfter('TemplateEngineSmarty::initSmarty', function (HookEvent $event) {
    /** @var \Smarty $smarty */
    $smarty = $event->arguments('smarty');

    $smarty->registerPlugin("function", "foo", "foo_function");
});

// ... and then use it anywhere in a Smarty template:

{foo}

The above hook can be put in your site/init.php file. If you prefer to use modules, put it into the module's init() method and make sure that the module is auto loaded.