I have a liquid template line like this:
{% assign firstSegments = hl7v2Data | get_first_segments: 'MSH|UAC|ORC' -%}
this is from https://github.com/microsoft/FHIR-Converter/blob/main/data/Templates/Hl7v2/ORU_R01.liquid
I am new to liquid template so based on my knowledge, it looks like I am assigning 'firstSegments' variable to hl7v2Data and after then I have no idea. From liquid template website, it uses or instead of bar for or operator. I don't know if get_first_segments is built in liquid template or microsoft has implemented in their code.
I am not sure I am even making sense here. Any explanation on this line of code?
Related
I apologise before for a long explanation - I have a hard time explaining it to myself.
I run Shopware 6 locally and using the development template. I needed to remove the product number from the product detail page. So, I override the twig template "buy-widget.html.twig":
{% sw_extends '#Storefront/storefront/page/product-detail/buy-widget.html.twig' %}
{% block page_product_detail_ordernumber_container %}
{% endblock %}
Works as expected - if I have not change the layout template for the product, but using the Shopware default.
But, when I change the layout to a custom layout (the only difference is that the image thumbs is bellow the main image) the product number is back?!
Checking with the Symfony Profiler, I can see that it's now another twig template (from a folder "component/.." responsible for displaying the product number.
Question: Am I correct to assume that I should extend the twig template from this component folder if I'm using a custom layout? I have not find anything in the docs about these "small" details. And if one need to be sure that a custom theme works in every case, you must make the changes (using sw_extends) in two files?
/ Magnus
I am calling a method in a pre-existing object from inside a Twig template, after properly authorizing it in policy:
{{ thisEmail.AddCC('me#example.com') }}
My problem is that the object method, which I use to produce a side-effect, not to return any text, returns true, and that leaves a visible "1" in my template output.
How to remove this output? I have this one working:
{{ thisEmail.AddCC('me#example.com')|trim('1') }}
But I feel it's not entirely elegant, and it can only remove that specific result. I would prefer to write something like |nul or |drop and have the filter drop everything, regardless of how much or what kind of stuff it receives as input.
I know how to do it by writing my own Twig extension filters, but my question here is: is there a nice way of achieving this with the core Twig language, un-extended?
If you want a twig statement not to output anything you can use the do tag, e.g.
{% do thisEmail.AddCC('me#example.com') %}
source
I am looking to make macros available inside of the articles for my flask blog. When the body of my blog changes I run the following code to render the body into HTML:
target.body_html = bleach.linkify(bleach.clean(render_template_string(value),tags=allowed_tags, attributes=allowed_attr, strip=True))
render_template_string(value) is the part I'm concerned about. To use a macro inside of the template string (value), every single string has to include the following in order for me to use the macros from this file in the article body:
{% import "includes/macros.html.j2" as macros %}
This would not be reasonable to ensure that writers have access to the macros that I write in all of their articles. Is there any way to pass that argument via the render_template_string() function so that it doesn't have to be defined in every string? Or to otherwise create a template that the string is rendered inside of? Something like the following:
render_template_string(string,macros=function_to_import_macros("includes/macros.html.j2"))
While there does not appear to be a solution to pass an entire macros template as context, get_template_attribute does appear to allow you to pass individual macros one at a time. Example:
includes/macros.html.j2:
{% macro hello() %}Hello!{% endmacro %}
{% macro hello_with_name(name) %}Hello, {{ name }}!{% endmacro %}
Template rendering code:
hello = get_template_attribute("includes/macros.html.j2","hello")
hello_with_name = get_template_attribute("includes/macros.html.j2","hello_with_name")
return render_template("index.html", hello=hello,hello_with_name=hello_with_name)
index.html:
{{ hello() }}
{{ hello_with_name("Bob") }}
This solution will allow for adding individual macros to the context while rendering a template or template_string and can even be added to the global context via this method. If anyone knows how to add an entire template full of macros, that'd rock, but this allows the basic needed functionality.
I want to automatically wrap some html, lets say <span data-id=".."> when I call {{ product.name }} in my twig template.
So when in a twig template, I use {{ product.name }}, I want the output to be: <span data-type="product" data-id="8" data-prop="name">My product name</span>. I cannot use twig filters or macros, since I really need the template syntax to be {{ product.name }}, so the end-user (template designer), does not have to care about it.
The reason I need this is because I am building an on-page editting tool for twig templates, so I need to know the contexts of those variables from within HTML.
I have tried to override the Compiler that the Twig_Environment uses, but I cannot seem to alter the output of the twig variable node.
How can I do this?
EDIT
I wanted to mention that I need this to use the {{ product.name }} syntax, since other designers will work with those templates outside of Symfony 2. I want to make almost all twig variables editable in the front-end, so a solution with filters or macros can indeed work, but it kills the usability and readability of the platform I am writing. There is no public API currently in twig that can achieve what I want, that is why I am fiddling with the twig compiler. I do not have the required knowledge of the Twig internals to achieve this. If someone could point me into a direction that would be great!
UPDATE 2
I have found a place where I can achieve what I want. Every GetAttr node is compiled to $this->getAttribute($someContext, "property"). So if I can change the subclass of compiled twig template, I can achieve what I want. By default all twig templates extend from Twig_Template. I want to extend this method.
How can I change the subclass of all compiled twig templates?
UPDATE 3
I've found a way to use my own base class for all compiled twig templates. I can simply set it as an option on the twig environment, see this link. I hope to get it working tomorrow and I will post a proper answer on how I solved it all together. Not sure how I will handle escaping, since that will happen after the $this->getAttribute() is called.
I think macros are the best candidates for those kind of wrappings.
For example:
main.twig
{% import "macros.twig" as macros %}
{{ macros.display_product(product) }}
macros.twig
{% macro display_product(product) %}
<span data-id="{{ product.id }}" data-prop="name">{{ product.name }}</span>
{% endmacro %}
Context
product:
id: 8
name: My Georgeous Product
Result
<span data-id="8" data-prop="name">My Georgeous Product</span>
See fiddle
I've solved it by wrapping the PrintNode that is created when parsing a VAR_START token (inside the twig parser) with my own EditablePrintNode. In that node I traverse the expression that is compiled by the print node and get the necessary property path and pass that as an argument to a wrapper function around the default twig escape function that is compiled by the PrintNode.
I suggest to write a custom filter. You can find the doc here about how to write and configure in your environment
// an anonymous function
$filter = new Twig_SimpleFilter('my_custom_product_filter', function ($product) {
return '<span data-id="'.$product->getId().'" data-prop="name">'.$product->getName().'</span>';
});
You need to register as described in the doc
then you can use as follow:
{{ myProduct|my_custom_product_filter}}
Hope this help
In the Yii 2.0 guide it says you can register Javascript code in a twig template like this:
{registerJs key='show' position='POS_LOAD'}
$("span.show").replaceWith('<div class="show">');
{/registerJs}
Tried this but it will simply output the whole snippet {registerJs ... as text on the page without adding it to the page's Javascript Code.
Similar commands like registerJsFile or registerCss aren't working either.
Am I missing something? Thanks!
EDIT:
As Mihai P. noted below, {registerJs} is syntax for Smarty templates. So, the question is: is there a similar way to register inline JS in Twig templates? The documentation only mentions registering assets.
You can use this in your Twig template, which is the current view, to call registerJs.
{% set script %}
var app = new Vue({
el: '#vue-widget',
data: {
message: 'Hello Vue!'
}
})
{% endset %}
{{ this.registerJs(script,4,'vue-widget') }}
The question is 3 years old, I put it here for someone runs into a similar problem.
You can use this in the Twig template with View constant like below:
{{ this.registerJs('$("span.show").replaceWith(\'<div class="show">\');', constant('\\yii\\web\\View::POS_HEAD')) }}
And, you can also call registerJs inside the Yii2 controller, which I think it makes the code cleaner
$this->getView()->registerJs('$("span.show").replaceWith(\'<div class="show">\');', \yii\web\View::POS_HEAD);
Your example is copied from the smarty section not the twig. There are some examples in the twig section that you might want to try.