Questions and syntax LATTE (Template Engine by Nette)

[sebibu]

I really love LATTE (Template Engine by Nette) but here and there I still have problems with the syntax.

I'm using RockPageBuilder by @bernhard and try to output the html for this module:
https://processwire.com/modules/fieldtype-leaflet-map-marker/

In PHP this would be:

<?php echo $map->render($page, 'YOUR MARKER FIELD'); ?>

And in LATTE? 😆 I tried this variants and more:

{$map->render($page, 'map')}
{$map->render($page, 'block->map')}
{$map->render($page, $block->map)}

Getting: Call to a member function render() on null in block #1158 (rockpagebuilderblock-map)

Maybe this topic can be a collection point for smaller Latte syntax questions.

[bernhard]

This

<?php echo $map->render($page, 'YOUR MARKER FIELD'); ?>

would be this

{$map->render($page, 'YOUR MARKER FIELD')}

Your error message means, that $map is NULL. That means $map is not available in your latte file for whatever reason. That means you are not struggling with latte syntax, you are struggling with PHP 😉 😛 

You can easily debug this via TracyDebugger:

{bd($map)}
{bd($page)}

To help you with your specific problem I'd need more info in where you are trying to use this markup...

[MrSnoozles]

It looks like you need to make $map available in your Latte file first. Then, as Bernhad has said, you could write in your Latte file

{$map->render($page, 'YOUR MARKER FIELD')}

With https://processwire.com/modules/template-engine-latte/ you would write something like the following in your PHP template file (or ready.php):

$view->set('map', $map);

It might vary depending on which modules you use exactly in your project.

Edited 9 hours ago by MrSnoozles

[bernhard]

6 hours ago, MrSnoozles said:

$views->set('map', $map);

RockFrontend / Latte doesn't provide this syntax as far as I know. What are you referring to?

6 hours ago, sebibu said:

https://processwire.com/modules/fieldtype-leaflet-map-marker/

Ah sorry, now I see $map should be a map marker object. The docs there state this:

<?php $map = wire('modules')->get('MarkupLeafletMap'); ?>

Which you could do in latte like this:

{var $map = $modules->get('MarkupLeafletMap')}

 

[MrSnoozles]

1 minute ago, bernhard said:

What are you referring to?

Updated the post to be clear it's an example and varies depending on which modules are used.

[sebibu]

Thanks for your help!

Trying..

{var $map = wire('modules')->get('MarkupLeafletMap')}
{$map->render($page, 'map')}

..in RockPageBuilder block LATTE-file I get: Call to undefined function wire() in block

Trying..

{var $map = $this->$wire('modules')->get('MarkupLeafletMap')}
{$map->render($page, 'map')}

.. I get: Method name must be a string in block

Now I'm confused. 😆 What I'm doing wrong?

[bernhard]

Sorry, wire() is not available in a latte file, because wire() is actually \ProcessWire\wire with the namespace. In PHP files where you have "namespace ProcessWire" at the top just adding wire() will work.

In latte it is a different story, because the latte file has no namespace and it will be compiled. Therefore "wire()" is not available.

But all ProcessWire API variables are, so please just use $wire instead of wire().

Pro-Tip: From any API variable you can access the wire object via ->wire, so this would also work: $block->wire->... or $config->wire->... etc.; So in hooks you might see $event->wire->... and that's the reason for this.

PS: $block is not an API variable but is available in RockPageBuilder blocks! And as it is also extending "wire" it will also have its methods.

Edit: I've just updated the example above and realised that it was using wire('modules') syntax that I'm never using. In that case you need to use $wire->modules->... or simply use $modules->... as $modules is also an API variable and therefore directly available.