Ok I'm trying to add HTML code to a Twig array and ending up into problems. I'm not the most knowledgable when it comes to Twig so I'll need help. I'm getting this error when I try: Fatal error: Uncaught Twig_Error_Syntax: Arguments must be separated by a comma.
What am I doing wrong? https://pastebin.com/gEGLnCid
{% set myArray= [] %}
{% for product in products %}
You have to do it in two steps e.g.
{% set arr = [] %}
{% for i in 1..10 %}
{% set foo %}
{{ i * 10 }}
foo
bar
foobar
{{ i }}
{% endset %}
{% set arr = arr | merge([ foo, ]) %}
{% endfor %}
{% for val in arr %}
{{ val }}
{% endfor %}
I have the following code in a Twig template:
{% macro option_display(type) -%}
{% if server.options_array.options.{{type}}.name is defined %}
{{server.options_array.options.{{type}}.name}} +${{server.options_array.options.~type~.price}}
{%else%}
None
{% endif %}
{%- endmacro %}
I'm getting this error:
Twig_Error_Syntax: Expected name or number
How should I get it to expand the variable 'type' in that context? I've tried using ~type~ as well (concat).
would be something like $server['options_array']['options'][$type]['name']; in PHP.
Just use the bracket notation:
{% macro option_display(type) -%}
{% if server.options_array.options[type].name is defined %}
{{ server.options_array.options[type].name }} +${{ server.options_array.options[type].price }}
{% else %}
None
{% endif %}
{%- endmacro %}
You probably want to also check whether server.options_array.options[type] is defined before checking whether server.options_array.options[type].name is defined.
Furthermore, like the documentation of the macro tag says, "as with PHP functions, macros don't have access to the current template variables." So you probably need to pass the server variable to the macro as well.
So here's a more complete example:
{% macro option_display(server, type) -%}
{% set option = server.options_array.options[type]|default(null) %}
{% if option.name is defined %}
{{ option.name }} +${{ option.price }}
{% else %}
None
{% endif %}
{%- endmacro %}
{% from _self import option_display %}
{{ option_display(server, 'foo') }}
{{ option_display(server, 'bar') }}
Notice that I'm using a helper variable option and the default filter. Without the filter, you'd get a Twig_Error_Runtime exception if the server.options_array.options array doesn't have the key you are using. (Whether you get this exception or not depends on the value of the environment option strict_variables.)
See TwigFiddle
Symfony 3.3
I have a form of my Voyage entity
Voyage entity has a Collection in it, named cities, collection of entity City.
And so do the form with the Collection named cities.
The user first use the form and create an instance of Voyage and add some cities to it, I managed to customise the prototype and render it via javascript when the user click "add city" button.
The form is rendered this way for the interesting part (cleaned version without html):
{% extends "#User/layout.html.twig" %}
{% form_theme form.cities '#Prototype/city.html.twig' %}
{% block content %}
{{ form_start(form) }}
{{ form_errors(form) }}
{{ form_row(form.cities) }}
{{ form_rest(form) }}
{{ form_end(form) }}
{% endblock content %}
The theme for the 'form.cities' :
{% block collection_widget %}
{% import '#Prototype/prototype.city.twig' as proto %}
{% spaceless %}
<div class="collection">
{% if prototype is defined %}
{% set attr = attr|merge({'data-prototype': proto.city(prototype)|escape }) %}
{% endif %}
<div {{ block('widget_container_attributes') }}></div>
<div id="container-cities">
{# Here I will add the cities via javascript when user add one #}
</div>
</div>
{% endspaceless %}
{% endblock collection_widget %}
The macro file used in this theme and imported as proto :
{% macro city(widget, id, name, zip) %}
{% spaceless %}
<div
class="added-city border-gray"
data-id="{{id|default('__id__')}}"
id="{{name|default('__name__')}}">
{{name|default('__city_name__')}} ({{zip|default('__zip__')}})
{{ form_errors(widget) }}
{{ form_widget(widget) }}
</div>
{% endspaceless %}
{% endmacro %}
My general problem : When the user wants to edit its instance of Voyage, it already has some cities in it. How can I render them ? How can I access the cities variable from within the theme.
My partial solution : I wanted to extract the 'container-cities' block from the theme file to the rendered html where the form is initialy rendered and where I can access the variables and do this :
{% import '#Prototype/prototype.city.twig' as proto %}
{% for city in form.cities %}
{{ proto.city(city, city.name) }}
{% endfor %}
But it give me this error :
Neither the property "name" nor one of the methods "name()", "getname()"/"isname()"/"hasname()" or "__call()" exist and have public access in class "Symfony\Component\Form\FormView".
(It doesn't fail on city.id probably because of some other field named id)
My question :
How can I access the cities within the theme and render them with my macro ?
Or
How to access to the cities items where I render the form, because the form.cities doesn't seem to be the actual City entity Collection, and get rid of that error ?
Thanks
I finally solved it, it was that simple :
I just used this in the form theme :
{% for city in form %}
{{ proto.city(city, city.vars.value.id, city.vars.value.name, city.vars.value.zip) }}
{% endfor %}
Given an a php array in a twig template:
object(Drupal\Core\Template\Attribute)#1208 (1) {
["storage":protected]=> array(0) { }
}
How do I check if there are no non-protected elements in the array? The idea is that I can only operate on non-protected values, so I can pretend the array is empty if only protected values are present.
So far, my check is as follows:
{% if attributes is defined and attributes is not empty %}
<div{{ attributes }}>
{{ content }}
</div>
{% else %}
{{ content }}
{% endif %}
In its current form, this displays <div>[Content]</div>. Instead, I'd like to see: [Content]
Any help?
If this is in Drupal 8, you can pass the attributes value through render to find out, like this:
{% if attributes|render %}
<div{{ attributes }}>
{{ content }}
</div>
{% else %}
{{ content }}
{% endif %}
Extend twig
<?php
$twig = new Twig_Environment($loader);
$twig->addFilter(new Twig_SimpleFilter('accessible_properties', 'get_object_vars'));
Use it inside template
{% set public_attributes = attributes is defined ? (attributes|accessible_properties) : [] %}
{% if public_attributes is not empty %}
...
{% else %}
...
{% endif %}
I am trying to implement something like this:
<div>
<input type="checkbox" name="checkbox" id="checkbox_id" />
<label for="checkbox_id">I agree to the Terms of Service</label>
</div>
The closest I've come to implement this is through:
<div>
{{ form_widget(form.agreeWithTos) }}
<label for="{{ form.agreeWithTos.vars.id }}">I agree to the Terms of Service</label>
</div>
Is there a better way? Having to specify {{ form.agreeWithTos.vars.id }} is inelegant. :)
Solved this problem using the following code in my form-theme:
{# ---- form-theme.html.twig #}
{% block checkbox_row %}
{% spaceless %}
<div>
{{ form_errors(form) }}
<label class="checkbox" for="{{ form.vars.id }}">
{{ form_widget(form) }}
{{ label|default(form_label(form)) | raw }}
</label>
</div>
{% endspaceless %}
{% endblock %}
in your Form-Template you can then use:
{% form_theme form '::form-theme.html.twig' %}
{{form_row(form.termsOfServiceAccepted, {
'label' : 'I have read and agree to the Terms and conditions'
})
}}
this way, the block from the form-theme would apply to any checkbox on the page. If you need to also use the default-theme, you can add a parameter to enable special-rendering:
{# ---- form-theme.html.twig #}
{% block checkbox_row %}
{% spaceless %}
{% if not useTosStyle %}
{{ parent() }}
{% else %}
{# ... special rendering ... #}
{% endif %}
{% endspaceless %}
{% endblock %}
which would be used like this:
{% form_theme form '::form-theme.html.twig' %}
{{form_row(form.termsOfServiceAccepted, {
'useTosStyle' : true,
'label' : 'I have read and agree to the Terms and conditions'
})
}}
Thanks to a recent commit to Symfony, you can use label_html from Symfony 5.1 onward:
{{ form_label(
form.privacy,
'I accept the privacy terms.',
{
'label_html': true,
},
) }}
I've been beating my head over this then had a eureka moment. The easiest way to do this–BY FAR–is to create a Twig extension.
Here's my Twig code:
{# twig example #}
{% block form_label %}
{% set label = parent() %}
{{ label|unescape|raw }}
{% endblock %}
and PHP:
<?php
new Twig_SimpleFilter('unescape', function($value) {
return html_entity_decode($value);
});
A couple notes:
This unescapes all previously escaped code. You should definitely re-escape afterwards as necessary.
This requires an extends tag for your target form theme in your own custom form theme which you can use in your subsequent forms. Put the twig code in a custom form theme and replace references to your other form theme/themes with this one.
Overall this is the fewest lines of code for the biggest and best outcome that I've been able to find. It's also ultra-portable and DRY: You can extend any form theme and the label will change without you changing the rest of your code.
Another very simple approach is to override the form theme directly in the template which renders the form. Using {% form_theme form _self %} it is as simple as this:
{% form_theme form _self %}
{% block form_label %}
{{ label | raw }}
{% endblock %}
{{ form_start(form) }}
See the corresponding section in the docs:
https://symfony.com/doc/current/form/form_customization.html#method-1-inside-the-same-template-as-the-form
The easiest way to customize the [...] block is to customize it directly in the template that's actually rendering the form.
By using the special {% form_theme form _self %} tag, Twig looks inside the same template for any overridden form blocks. [...]
The disadvantage of this method is that the customized form block can't be reused when rendering other forms in other templates. In other words, this method is most useful when making form customizations that are specific to a single form in your application. If you want to reuse a form customization across several (or all) forms in your application, read on to the next section.
Another approach is to use a simple Twig replacement:
{% set formHtml %}
{{ form(oForm) }}
{% endset %}
{{ formHtml|replace({'[link]': '', '[/link]': ''})|raw }}
In your form, you have something like this in order to make it work:
$formBuilder->add('conditions', CheckboxType::class, [
'label' => 'Yes, I agree with the [link]terms and conditions[/link].'
]
);
Of course, you may change [link] to anything else. Please note that you do not use HTML tags ;-)
I think you are looking for form theming. That way you are able to style each part of form, in an independent file, anyway you want and then just render it in "elegant" way, row by row with {{ form_row(form) }} or simply with {{ form_widget(form) }}. It's really up to you how you set it up.
Symfony 4.2
TWIG:
{% block main %}
....
{% form_theme form _self %}
...
{{ form_row(form.policy, {'label': 'security.newPassword.policy'|trans({"%policyLink%":policyLink, "%termsLink%":termsLink})}) }}
...
{% endblock %}
{% block checkbox_radio_label %}
<label{% with { attr: label_attr } %}{{ block('attributes') }}{% endwith %}>
{{- widget|raw }} {{ label|unescape|raw }}
</label>
{% endblock checkbox_radio_label %}
PHP:
use Twig\Extension\AbstractExtension;
use Twig\TwigFilter;
class AppExtension extends AbstractExtension
{
public function getFilters()
{
return [
new TwigFilter('unescape', function ($value) {
return html_entity_decode($value);
}),
];
}
}
So form theming is pretty complicated. The easiest thing I've found is to just suppress the field's label ('label'=> false in Symfony form class) and then just add the html label in the twig html.
You could leverage form theming in another way: you could move the <label> tag outside the form_label() function.
Create a custom form theme, and for checkboxes only move the <label> tag outside the form_label function:
{% block checkbox_row %}
<label>{{ form_label(form) }}</label>
{{ form_errors(form) }}
{{ form_widget(form) }}
{% endblock checkbox_row %}
{% block checkbox_label %}
{{ label }}
{% endblock checkbox_label %}
Now, in your teplate, override the label of your checkbox, and thus effectively inject HTML into the label function:
{% form_theme form 'yourtheme.html.twig' _self %}
{% block _your_TOS_checkbox_label %}
I agree with terms and conditions
{% endblock _your_TOS_checkbox_label %}