I want to make modular css load with instruction in twig
{{ addCss("csspath") }}
{# rest of template #}
and then write all css in a twig block in my html header like this :
{% block css %}
{{ writeCss() }}
{% endblock %}
My custom function work well, all css store with addCss will be write by writeCss but I have some problem with twig processing order. Css needs to be in head html tag and because of that twig process writeCss before all my addCss call.
I've made some test to guess twig process order by i have no ideo of how control it.
Related
I'm building a site with Wordpress + Timber and need to output an uploaded SVG image as code.
Here's what I've got, but it's not working:
{% for block in section.blocks %}
<img src="{{ Image(block.icon).src }}"> <!-- this works as exptected -->
{{ function('file_get_contents', Image(block.icon).src) }} <!-- this fails -->
{% endfor %}
The error generated is "failed to open stream", but the URL that Image(block.icon).src provides is a full, valid URL (ie I can go to it in my browser and it loads).
What am I missing? Or is there a better approach?
{{ function('file_get_contents', Image(map.flag).src) }} works for me. Should work for you if you are using advance custom fields in WordPress.
There is two way to load external code in twig file.
Include method :
{% include 'my.svg.twig' %}
Twig source function :
{{ source(my.svg.svg) }}
Also, you can try WP_PLUGIN_DIR constant with file_get_contents + your file url.
{{ function('file_get_contents', 'WP_PLUGIN_DIR'.Image(block.icon).src) }}
PS. Source function works like include.
More info about twig source function is here : https://twig.symfony.com/doc/2.x/functions/source.html
So I have been working with twig now, and I use a function manner to render all of my html. My question is, is there a way to render the blocks (with functions) first, and then the {% extends X %} afterwards?
example:
{% extends 'base.html.twig' %}
{% block body %}
{{ resource('script', 'google.com') }}
{% endblock %}
I would want the resource function to trigger, before the file is extended, in some way.
Reason why:
In the base I define another function which loads a head with a base configuration, it also gives easy options to load certain libraries such as bootstrap etc. But I want the user able to later, externally in a body add more resources and make them pop up in the head instead of in the body. I can give more code if needed but I think this will suffice since this is more a twig question than a php question.
I've got Twig and Mustache combined. Since they both use same tags for bookmarks
{{ var }}
I changed Mustache tags, like this
Mustache.parse(template, ['${', '}']);
So I use this bookmark in Mustache
${ var }
And there are no conflicts.
The problem comes out when I need to tell Mustache not to escape HTML. As the Documentation says, I am to use
{{{ do_not_escape_this_var }}}
But this leads to a conflict with Twig! And It seems like there is no way tu customize it.
I know I could override Twig's bookmarks, but this is bad for the frontend team, used to Twig default tag.
Any solutions? Thank you
Like the Twig's documentation says, code can be escaped like this:
{{ '{{{ do_not_escape_this_var }}}' }}
For larger blocks of code, you can use verbatim to prevent Twig from parsing Mustache code as Twig code:
{% verbatim %}
{{{ do_not_escape_this_var }}}
{% endverbatim %}
With verbatim, you could also avoid parsing chunks of Mustache code with the default Mustache tags:
{% verbatim %}
<h1>Hello {{ name }}!</h1>
<p>How are you {{ today }}?</p>
{{! This is just Mustache, not Twig }}
{% endverbatim %}
Of course, then you can't use Twig between {% verbatim %} and {% endverbatim %}. I don't think it's a problem as mixing Mustache (with the default tags) and Twig code would be very confusing.
We are using Twig as our templating engine but I'm stuck with a problem of the rendering order now. See - https://straightupcraft.com/articles/twig-processing-order
We are using amp for our new site and with amp and web components in general it is necessary to import the components (once) to use them. So the idea was to create a Twig Extension to accomplish exactly this. Everytime a component is used it is called via this twig function call. The function is checking the component, adding it to a stack and you can use it from now on. The stack then is transformed into a list of imports for the head of the page.
The problem here is Twigs top to bottom rendering. When I call said function in a partial or a template the rendering of "layout.twig" already took place and all function calls below/after are not affecting the stack.
Is there an option to change the rendering to inside out, so that the rendering is first using the lowest partial and "bubbles" up to templates and finally layout without them rendering before?
Another way to get the values in layout would nice as well.
Desired behavior:
Layout.twig
{{ getAllComponents() }}
{# should output component1 and component2 #}
{% block content %}
Page.twig
{% extends Layout.twig %}
{{ addComponent('component1') }}
{% include partials.twig %}
<component1>...</component1>
partials.twig
{{ addComponent('component2') }}
<component2>...</component2>
Actual behavior:
Layout.twig
{{ getAllComponents() }}
{# is empty #}
There is no option to change this behavior. However you can use a trick to archive this:
Render your content to a variable before you call getAllComponents()
layout.twig
{% set mainContent %}
{% block content %}{% endblock %}
{% endset %}
{{ getAllComponents() }}
{{ mainContent }}
There actually is a magical solution to this problem -- some genius wrote this Deferred Twig Extension which lets you run some code (output a variable, call a function, etc) in a block near the top of your layout, but wait until the rest of the twig templates have parsed before executing them. There's an example on that github page showing how you can achieve this.
As far as I know, no you cannot switch the rendering of a TWIG template.
However, I would recommend possibly looking at the {% embed %} or {{ render }} tags.
Embed allows specific TWIG files to be placed within others with variables, so you could pass each component into their relevant partials.twig file.
Render allows the use of embedding a separate controller action, so you create a ControllerAction that took in a component variable and renders its own TWIG file.
Documentation on Embed: https://twig.sensiolabs.org/doc/2.x/tags/embed.html
Documentation containing Render: https://twig.sensiolabs.org/doc/2.x/api.html
In defining a base template in twig, I want to reserve an area for special notifications, using a block. It could be an extra sidebar that may contain all kinds of things (calendar, or some extra information, whatever.) The default should be emtpy, but any child template may extend and fill it.
Now I want to have all those extensions be included in a <div class='special-sidebar'> if the block is extended, and not show anything if it is not included. Is there any way to define the containing element in the base template?
{# Base template #}
Content etc...
{% block special %} {# may be overridden by child template #}{% endblock %}
{# child template #}
{% block special %} Here, the special sidebar is filled! {% endblock %}
The base page should show just the content:
// base template:
Content etc...
And the child page:
// child template
Content etc...
<div class"special-sidebar"> Here, the special sidebar is filled! </div>
Where and how do I put the html for this? I could define it in every child, but that means you have to remember to use the correct html each time, I'd rather set this in the base template and not bother with it. But I don't want empty elements in my page if the block is not overridden.
You can solve it like this, if you want to display a certain block only if it has content. Hope, this is what you're looking for.
Example index.html.twig
{% set _block = block('dynamic') %}
{% if _block is not empty %}
{{ _block|raw }}
{% endif %}
Example part.html.twig
{% extends "index.html.twig" %}
{% block dynamic %}
Block content goes here.
{% endblock %}
Source: How to check if a block exists in a twig template - Symfony2