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Exception generated by PropertyMappingFactory class with trying to the first element of an array with twig


Exception generated by PropertyMappingFactory class with trying to the first element of an array with twig

By : user2949623
Date : November 17 2020, 01:00 AM
I hope this helps you . I have a Motors entity having an OneToMany relation with the File entity. Uploading files and linking them is done with VichUploaderBundle. , I ended the problem by an if condition in the loop:
code :
{%for f in motors.files%}
    {%if loop.index == 1%}
        src="{{ vich_uploader_asset(f, 'motors_files')}}"
   {% endif %}
{%endfor%}


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How to get an element from an array in Twig when the key contains a dot?

How to get an element from an array in Twig when the key contains a dot?


By : Roceng
Date : March 29 2020, 07:55 AM
I wish this helpful for you I have many configuration options inside an array called 'app', which is set as a global in Twig. , You can use:
code :
{{ app["cookie.path"] }}
Twig ignore Array to string conversion exception

Twig ignore Array to string conversion exception


By : user61050
Date : March 29 2020, 07:55 AM
like below fixes the issue That message is not done by twig, but by php itself, you can see if you try to echo an array.
You should not display such messages in production, an important part of setting up a prod server is making sure display_errors is off so the user cannot see implementation details of your site.
$twig->render() exception - argument must be array, string given

$twig->render() exception - argument must be array, string given


By : Vengadesan P
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , I am trying return rendered template if some condition is true in this function: , Try this:
code :
* @Route("/results", name="front.tour.results")
* @Template
*/
public function indexAction(Request $request, $countryUrl=NULL, $placeUrl=NULL)
{
  ...

  if(condition) {

  return $this->render('@App/FrontModule/Tour/hotelList.html.twig', [
        'allPossiblePlaces' => $allPossiblePlaces
    ]);
}
In Twig: Check if array element exists. If not set this one element

In Twig: Check if array element exists. If not set this one element


By : user2969043
Date : March 29 2020, 07:55 AM
it should still fix some issue Nope, that is the only (vanilla) way. If you want to make it shorter u'd need to extend twig with something like this:
code :
<?php
    $twig = new \Twig\Environment($loader);
    $function = new \Twig\TwigFunction('set_array_value', function (&$context, $array_name, $index, $value) {
        if (!isset($context[$array_name])) return;
        /**
            - If value is array just do arr[index] = value
            - Otherwise test if object
                -> test if method $index exists
                -> test if there is a setter for the property $index
        **/
        if (is_array($context[$array_name])) $context[$array_name][$index] = $value;
        elseif(is_object($context[$array_name])) {
            if (method_exists($context[$array_name], $index)) $context[$array_name]->{$index}($value);
            elseif(method_exists($context[$array_name], 'set'.$index)) $context[$array_name]->{'set'.$index}($value);
        }
    }, ['needs_context' => true, ]);
    $twig->addFunction($function);
{% macro foo(my_array) %}
    {% if not array.foo is defined %}{% do set_array_value('my_array', 'foo', 'bar') %}{% endif %}

    {{ my_array.foo }}
{% endmacro %}

{% import _self as sandbox %}

{{ sandbox.foo({}) }} #output: bar
{{ sandbox.foo({'foo': 42,}) }} #output: 42
Conditional class with Twig on div element

Conditional class with Twig on div element


By : sweet dude
Date : September 22 2020, 01:00 PM
will be helpful for those in need Can I change class added to a div element depending on the content of this div ? Like: "if the div is empty, add this class, else add this class" and targeting the div with an id or something else. , Is that not as simple as:
code :
<div class="{{ divContent=='' ? 'emptyClass' :'notEmptyClass' }}">
 {{divContent}}
</div>
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