Writing custom macros in new revision

In commit (at github ) of 22.1.2012 the way of writing custom atr-macros changed.
This document comments how to change your code.

Note these changes:

• first argument: no more “@” character in macro name
• second argument (string|callback) is opening code . (Previously was attr code for attr macro)
• third argument (string|callback) remains the same
• (new)fourth argument (string|callback) is attr code
• $l->parser → $l->compiler (since 12.1.)

About the macros

• src
  • usage <img n:src="{$image}"> Where $image is binary data of image, thus you can use directly Nette\Image instance.
  • This macro just writes the src attribute (src="data:image/jpeg;base64,/9j/4AAQS...). We dont need any open/closing code. Move second argument to foufth position.
• helper
  • usage <em n:helper="upper">{$text}</em>.
  • This macro in actually adds no attribute to the tag, so fourth argument is empty. Second and third arg is same.

Old style is commented.

function templatePrepareFilters($t)
{
    $t->registerFilter($l = new Nette\Latte\Engine);
    $l = new Nette\Latte\Macros\MacroSet($l->compiler); // in 12.1. $l->parser  --->   $l->compiler
/*
    $l->addMacro('@src', 'echo \'src="\' , $template->dataStream(%node.word) , \'"\'');
*/
    $l->addMacro('src', null, null, 'echo \'src="\' , $template->dataStream(%node.word) , \'"\'');

/*
    $l->addMacro('@helper', 'ob_start()', function($node) {
*/
    $l->addMacro('helper', 'ob_start()', function($node) {
        $w = new \Nette\Latte\PhpWriter($node->tokenizer, $node->args);
        return $w->write('echo %modify(ob_get_clean())');
    });
}

This article updates custom macros (in cs)

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