Is it possible to let Mustache (php) partials contain their own data? - php

Question

I want to have a Mustache template reference a partial where the partial adds data to the context as well. Instead of having to define the data in the data to the initial Mustache rendering.
I have a mockup in https://gist.github.com/lode/ecc27fe1ededc9b4a219
It boils down to:
<?php
// controller
$options = array(
'partials' => array(
'members_collection' => new members_collection
)
);
$mustache = new Mustache_Engine($options);
$template = '
<h1>The team</h1>
{{> members_collection}}
';
echo $mustache->render($template);
// viewmodel
class members_collection {
public $data;
public function __toString() {
$template = '
<ul>
{{# data}}
{{.}}
{{/ data}}
</ul>
';
$mustache = new Mustache_Engine();
return $mustache->render($template, $this);
}
public function __construct() {
$this->data = array(
'Foo Bar',
'Bar Baz',
'Baz Foo',
);
}
}
This gives an error like Cannot use object of type members_collection as array.
Is there a way to make this work? Or is using __toString not the right way? And would using a partials_loader or __invoke help? I got it working with neither but might miss something.

Answer 1

In your example above, members_collection isn't a partial, it's a subview. Two really small changes make it work: in the options array, change the partials key to helpers; and, in the parent template, change from a partial tag to an unescaped interpolation tag ({{> members_collection}} -> {{{members_collection}}}).
<?php
require '/Users/justin/Projects/php/mustache/mustache.php/vendor/autoload.php';
// controller
$options = array(
'helpers' => array(
'members_collection' => new members_collection
)
);
$mustache = new Mustache_Engine($options);
$template = '
<h1>The team</h1>
{{{members_collection}}}
';
echo $mustache->render($template);
// viewmodel
class members_collection {
public $data;
public function __toString() {
$template = '
<ul>
{{# data}}
{{.}}
{{/ data}}
</ul>
';
$mustache = new Mustache_Engine();
return $mustache->render($template, $this);
}
public function __construct() {
$this->data = array(
'Foo Bar',
'Bar Baz',
'Baz Foo',
);
}
}

Answer 2

I'm assuming you're using the bobthecow PHP implementation Mustache templating in PHP.
As of last time I checked, Mustache PHP it didn't support data driven partials. You want sort of a 'controller' backed a partial... however, currently partials just simple include-this-file style partials.
You're gonna have to build this yourself. Good luck!