mirror of
https://github.com/Mibew/handlebars.php.git
synced 2025-05-03 10:33:08 +03:00
Added registerHelper
I did it in such a way where I’m not messing with the other methods or
classes to get what I wanted.
I realize that there maybe no need for the child context, however when
trying a permutation of
```
'fn' => function($data = null) use($context, $template) {
$context->push($context->last());
if(is_array($data)) {
$context->push($data);
}
$template->setStopToken('else');
$buffer = $template->render($context);
$template->setStopToken(false);
$template->discard($context);
if(is_array($data)) {
$context->pop();
}
$context->pop();
return $buffer;
}
```
It didn’t parse the `../../../test` correctly in the test. I figured
that the ChildContext is a nice pattern overall and doesn’t interfere
with the rest of the package anyways…
This commit is contained in:
Christian Blanquera
parent
57d00e6e82
commit
33c76738b4
85
src/Handlebars/ChildContext.php
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85
src/Handlebars/ChildContext.php
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<?php
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/**
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* This file is part of Handlebars-php
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* Base on mustache-php https://github.com/bobthecow/mustache.php
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*
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* PHP version 5.3
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*
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* @category Xamin
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* @package Handlebars
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* @author fzerorubigd <fzerorubigd@gmail.com>
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* @author Behrooz Shabani <everplays@gmail.com>
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* @author Chris Gray <chris.w.gray@gmail.com>
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* @author Ulrik Lystbaek <ulrik@bettertaste.dk>
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* @author Dmitriy Simushev <simushevds@gmail.com>
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* @author Christian Blanquera <cblanquera@openovate.com>
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* @copyright 2010-2012 (c) Justin Hileman
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* @copyright 2012 (c) ParsPooyesh Co
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* @copyright 2013 (c) Behrooz Shabani
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* @copyright 2013 (c) f0ruD A
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* @license MIT <http://opensource.org/licenses/MIT>
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* @version GIT: $Id$
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* @link http://xamin.ir
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*/
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namespace Handlebars;
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/**
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* Handlebars context
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* Context for a template
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*
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* @category Xamin
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* @package Handlebars
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* @author fzerorubigd <fzerorubigd@gmail.com>
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* @author Behrooz Shabani <everplays@gmail.com>
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* @copyright 2010-2012 (c) Justin Hileman
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* @copyright 2012 (c) ParsPooyesh Co
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* @license MIT <http://opensource.org/licenses/MIT>
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* @version Release: @package_version@
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* @link http://xamin.ir
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*/
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class ChildContext extends Context
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{
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protected $parentContext = null;
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/**
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* Sets a parent context in which
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* we will case for the ../ in get()
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*
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* @param Context
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* @return void
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*/
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public function setParent(Context $parent) {
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$this->parentContext = $parent;
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}
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/**
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* Get a available from current context
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* Supported types :
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* variable , ../variable , variable.variable , variable.[variable] , .
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*
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* @param string $variableName variable name to get from current context
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* @param boolean $strict strict search? if not found then throw exception
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*
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* @throws \InvalidArgumentException in strict mode and variable not found
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* @throws \RuntimeException if supplied argument is a malformed quoted string
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* @throws \InvalidArgumentException if variable name is invalid
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* @return mixed
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*/
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public function get($variableName, $strict = false)
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{
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//if the variable name starts with a ../
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//and we have a parent
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if(strpos($variableName, '../') === 0 && $this->parentContext instanceof Context) {
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//just remove the first ../
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$variableName = substr($variableName, 3);
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//and let the parent context handle the rest
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return $this->parentContext->get($variableName, $strict);
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}
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//otherwise, it's business as usual
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return parent::get($variableName, $strict);
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}
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}
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@ -236,6 +236,111 @@ class Handlebars
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return $this->getHelpers()->has($name);
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return $this->getHelpers()->has($name);
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}
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}
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/**
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* Add a new helper.
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*
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* @param string $name helper name
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* @param mixed $helper helper callable
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*
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* @return void
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*/
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public function registerHelper($name, $helper)
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{
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$this->addHelper($name, function($template, $context, $arg) use ($helper)
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{
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$args = $template->parseArguments($arg);
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$named = $template->parseNamedArguments($arg);
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foreach($args as $i => $arg) {
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//if it's literally string
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if($arg instanceof StringWrapper) {
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//we have no problems here
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$args[$i] = (string) $arg;
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continue;
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}
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//not sure what to do if it's not a string or StringWrapper
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if(!is_string($arg)) {
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continue;
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}
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//it's a variable and we need to figure out the value of it
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$args[$i] = $context->get($arg);
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}
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//push the options
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$args[] = array(
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//special fields
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'data' => array(
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'index' => $context->get('@index'),
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'key' => $context->get('@key'),
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'first' => $context->get('@first'),
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'last' => $context->get('@last')),
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// Named arguments
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'hash' => $named,
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// A renderer for block helper
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'fn' => function($inContext = null) use($context, $template)
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{
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$defined = !!$inContext;
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if(!$defined) {
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$inContext = $context;
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$inContext->push($inContext->last());
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} else if (!$inContext instanceof Context) {
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$inContext = new ChildContext($inContext);
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$inContext->setParent($context);
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}
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$template->setStopToken('else');
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$buffer = $template->render($inContext);
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$template->setStopToken(false);
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//what if it's a loop ?
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$template->rewind();
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//What's the point of this again?
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//I mean in this context (literally)
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//$template->discard($inContext);
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if($defined) {
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$inContext->pop();
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}
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return $buffer;
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},
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// A render for the else block
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'inverse' => function($inContext = null) use($context, $template)
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{
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$defined = !!$inContext;
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if(!$defined) {
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$inContext = $context;
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$inContext->push($inContext->last());
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} else if (!$inContext instanceof Context) {
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$inContext = new ChildContext($inContext);
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$inContext->setParent($context);
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}
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$template->setStopToken('else');
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$template->discard($inContext);
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$template->setStopToken(false);
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$buffer = $template->render($inContext);
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if($defined) {
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$inContext->pop();
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}
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return $buffer;
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},
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// The current context.
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'context' => $context,
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// The current template
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'template' => $template);
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return call_user_func_array($helper, $args);
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});
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}
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/**
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/**
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* Remove a helper by name.
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* Remove a helper by name.
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*
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*
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