How to render twig condition dynamically from php array
Php data array
arry('label'=>'test','parentRoleExp'=>"is_granted('ROLE_ADMIN') OR is_granted('ROLE_BLOG')"
twig code
{% set parentRoleExp = '' %}
{% if link['parentRoleExp'] is defined %}
{% set parentRoleExp = link['parentRoleExp'] %}
{% endif %}
{% if parentRoleExp %}
<h1>Admin Blog</h1>
{% else %}
<h1>Blog <?h1>
{% endif %}
Above code not working
Expected result
{% if is_granted('ROLE_ADMIN') OR is_granted('ROLE_BLOG') %}
<h1>Admin Blog</h1>
{% else %}
<h1>Blog <?h1>
{% endif %}
I tried with various method but not working. please help
Thanks in advance
it's very bad idea - ulnerability
But if you want... register eval() function:
$twig = new Twig\Environment($loader);
$twig->addFunction(new Twig\TwigFunction('phpEval', 'eval'));
in template
{% if phpEval(parentRoleExp) %}
Related
Currently I have two arrays
{% set code = [AMS, EIN, RTM] %}
{% set city = [Amsterdam, Eindhoven, Rotterdam] %}
I would like to check if the value of {{airport}} exists in the first array and if it is code[0] I would like to change {{airport}} into the value of city[0]. Is this possible with Twig?
You can loop over the code array:
{% for c in code %}
{# ... #}
{% endfor %}
Documentation: https://twig.symfony.com/doc/2.x/tags/for.html
Then if the item does match:
{# ... #}
{% if airport == c %}
{# ... #}
{% endif %}
{# ... #}
Documentation: https://twig.symfony.com/doc/2.x/tags/if.html
Replace the variable airport, at the same loop index:
{# ... #}
{% set airport = city[loop.index0] %}
{# ... #}
Documentation: https://twig.symfony.com/doc/2.x/tags/for.html#the-loop-variable
So, in full:
{% for c in code %}
{% if airport == c %}
{% set airport = city[loop. index0] %}
{% endif %}
{% endfor %}
Running fiddle: https://twigfiddle.com/xflfas/2
Out of the scope note: your arrays would be better named cities and codes.
This way, when you loop over them, you end up with meaningful naming
{% set codes = ['AMS', 'EIN', 'RTM'] %}
{% for code in codes %}
{{ code }}
{% endfor %}
{# and #}
{% set cities = ['Amsterdam', 'Eindhoven', 'Rotterdam'] %}
{% for city in cities %}
{{ city }}
{% endfor %}
Use {% if value in array %} to search from the first array and Twig's merge function to replace the value in the second array. See this https://twig.symfony.com/doc/2.x/filters/merge.html
I am using Twig and Timber for a WordPress project. I have the following loop in my template that prints my custom post type titles into a HTML structure.
{% for company in companies %}
{% set dot = "<div class='company-dot'></div>" %}
{% set range = range(10, 20) %}
{{dot}}
{{random(range)}}
<div class="company">
<div class="company-dot dot-active"></div>
<p class="dot-caption">{{ company.title }}</p>
</div>
{% endfor %}
I would like to print my {{dot}} variable x amount of times based upon the number that is generated by {{random(range)}}. How can I do this?
The simplest solution would be to iterate random(range) times with a for loop:
{% for i in 0..random(range(10, 20)) %}
{{ dot }}
{% endfor %}
I don't really know Twig but my guess is that you could to the following:
{% for i in random(range) %}
{{dot}}
{% endfor %}
You already know how to use range, just use it again :
{% set dots_count = random(range) %}
{% for dot_index in range(1,dots_count) %}
{{dot}}
{% endfor %}
{{dots_count}}
Here is a fiddle : https://twigfiddle.com/ko595z
We are making a website with a search form. In that form users can search with text and checkboxes. With the checkboxes users can search only in the related categories.
We need to accomplish this with Craft CMS and Twig.
We tried the following method, but that didnt worked.
{% set query = craft.request.getParam('search-results') %}
{% set nietBijdragePlichtig = craft.request.getParam('plg-Nee') %}
{% if nietBijdragePlichtig == 'on' %}
{% for entry in craft.entries.section('producten').limit(null).order(asc).search('query, nietBijdragePlichtig').find() %}
<div id=”test”>test</div>
{% endfor %}
{% endif %}
and we tried:
{% set query = craft.request.getParam('search-results') %}
{% set nietBijdragePlichtig = craft.request.getParam('plg-Nee') %}
{% set alle = query ~ ' ' ~ nietBijdragePlichtig %}
{% if nietBijdragePlichtig == 'on' %}
{% for entry in craft.entries.section(‘producten’).limit(null).order(asc).search(alle).find() %}
<div id=”test”>test</div>
{% endfor %}
{% endif %}
We also tried to use multiple .search()
We tried both codes with different syntaxes.
How can we accomplish this?
Really thanks!
I am trying to concatenate a variable to an array key to get access to certain values in Twig, but no success so far.
I have a large PHP array that has for example keys like this:
$array = [
...
...
...
'test_1' => $test_1,
'test_2' => $test_2
];
I tried the following in my Twig template:
{% for i in 1..2 %}
{% if array.test_{{ i }} != 0 %}
<div>Test</div>
{% endif %}
{% endfor %}
but that doesn't work.
Is there a way to access values like this in Twig?
Try this:
{% for i in 1..2 %}
{% if array['test_' ~ i] != 0 %}
<div>Test</div>
{% endif %}
{% endfor %}
I try to use a simple loop, in my real code this loop is more complex, and I need to break this iteration like:
{% for post in posts %}
{% if post.id == 10 %}
{# break #}
{% endif %}
<h2>{{ post.heading }}</h2>
{% endfor %}
How can I use behavior of break or continue of PHP control structures in Twig?
This can be nearly done by setting a new variable as a flag to break iterating:
{% set break = false %}
{% for post in posts if not break %}
<h2>{{ post.heading }}</h2>
{% if post.id == 10 %}
{% set break = true %}
{% endif %}
{% endfor %}
An uglier, but working example for continue:
{% set continue = false %}
{% for post in posts %}
{% if post.id == 10 %}
{% set continue = true %}
{% endif %}
{% if not continue %}
<h2>{{ post.heading }}</h2>
{% endif %}
{% if continue %}
{% set continue = false %}
{% endif %}
{% endfor %}
But there is no performance profit, only similar behaviour to the built-in break and continue statements like in flat PHP.
From docs TWIG 2.x docs:
Unlike in PHP, it's not possible to break or continue in a loop.
But still:
You can however filter the sequence during iteration which allows you to skip items.
Example 1 (for huge lists you can filter posts using slice, slice(start, length)):
{% for post in posts|slice(0,10) %}
<h2>{{ post.heading }}</h2>
{% endfor %}
Example 2 works TWIG 3.0 as well:
{% for post in posts if post.id < 10 %}
<h2>{{ post.heading }}</h2>
{% endfor %}
You can even use own TWIG filters for more complexed conditions, like:
{% for post in posts|onlySuperPosts %}
<h2>{{ post.heading }}</h2>
{% endfor %}
A way to be able to use {% break %} or {% continue %} is to write TokenParsers for them.
I did it for the {% break %} token in the code below. You can, without much modifications, do the same thing for the {% continue %}.
AppBundle\Twig\AppExtension.php:
namespace AppBundle\Twig;
class AppExtension extends \Twig_Extension
{
function getTokenParsers() {
return array(
new BreakToken(),
);
}
public function getName()
{
return 'app_extension';
}
}
AppBundle\Twig\BreakToken.php:
namespace AppBundle\Twig;
class BreakToken extends \Twig_TokenParser
{
public function parse(\Twig_Token $token)
{
$stream = $this->parser->getStream();
$stream->expect(\Twig_Token::BLOCK_END_TYPE);
// Trick to check if we are currently in a loop.
$currentForLoop = 0;
for ($i = 1; true; $i++) {
try {
// if we look before the beginning of the stream
// the stream will throw a \Twig_Error_Syntax
$token = $stream->look(-$i);
} catch (\Twig_Error_Syntax $e) {
break;
}
if ($token->test(\Twig_Token::NAME_TYPE, 'for')) {
$currentForLoop++;
} else if ($token->test(\Twig_Token::NAME_TYPE, 'endfor')) {
$currentForLoop--;
}
}
if ($currentForLoop < 1) {
throw new \Twig_Error_Syntax(
'Break tag is only allowed in \'for\' loops.',
$stream->getCurrent()->getLine(),
$stream->getSourceContext()->getName()
);
}
return new BreakNode();
}
public function getTag()
{
return 'break';
}
}
AppBundle\Twig\BreakNode.php:
namespace AppBundle\Twig;
class BreakNode extends \Twig_Node
{
public function compile(\Twig_Compiler $compiler)
{
$compiler
->write("break;\n")
;
}
}
Then you can simply use {% break %} to get out of loops like this:
{% for post in posts %}
{% if post.id == 10 %}
{% break %}
{% endif %}
<h2>{{ post.heading }}</h2>
{% endfor %}
To go even further, you may write token parsers for {% continue X %} and {% break X %} (where X is an integer >= 1) to get out/continue multiple loops like in PHP.
From #NHG comment — works perfectly
{% for post in posts|slice(0,10) %}
I have found a good work-around for continue (love the break sample above).
Here I do not want to list "agency". In PHP I'd "continue" but in twig, I came up with alternative:
{% for basename, perms in permsByBasenames %}
{% if basename == 'agency' %}
{# do nothing #}
{% else %}
<a class="scrollLink" onclick='scrollToSpot("#{{ basename }}")'>{{ basename }}</a>
{% endif %}
{% endfor %}
OR I simply skip it if it doesn't meet my criteria:
{% for tr in time_reports %}
{% if not tr.isApproved %}
.....
{% endif %}
{% endfor %}