Check if value exists in array TWIG

Question

I've got an string loaded from my DB, and global variable from my config.yml. I want to check if variable is a part of array given below:

app.user.role ='["1","2","3","4","5","6","7","8","9","10","11"]'

I can't change that. It have to look like this.

I was checking it like this: {% if VARIABLE in app.user.role %}

Global VARIABLE is an integer (and I can't change that)

But when for example VARIABLE = 1 my statement returns true, because in app.user.role we can find four 1 (in "1","10","11"), but i want to find it just in "1" not in "10","11".

What I want is to convert app.user.role to array or find another way to check if variable is an element of my pseudo array.

I was trying to iterate through for loop but app.user.role but app.user.role is not an array (actualy it is, but with one value ["1","2","3","4","5","6","7","8","9","10","11"]).

Your app.user.role is not an array, it's a string. That's why a simple if...in doesn't work. — Maerlyn
– Maerlyn, Commented Dec 28, 2017 at 15:35

Kamil Musial · Accepted Answer · 2017-12-29 09:12:34Z

2

The string looks like JSON. You can create a Twig Extension class and register there a function that simply returns in_array:

<?php

class MyExtension extends Twig_Extension
{
    public function getFunctions()
    {
        return [
            new Twig_SimpleFunction(
                'inarray',
                [$this, 'inArray']
            ),
        ];
    }

    /**
     * @param int $variable
     * @param string $appUserRole
     *
     * @return bool
     */
    public function inArray(int $variable, string $appUserRole): bool
    {
        return in_array($variable, json_decode($appUserRole));
    }
}

Then in the template:

{% if inarray(VARIABLE, app.user.role) %}

answered Dec 29, 2017 at 9:12

Kamil Musial

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Comments

user7289982 · Accepted Answer · 2017-12-28 14:26:05Z

0

Found a solution. Not the best but it works.

{% set check = '"'~VARIABLE~'"' %}
{% if check in app.user.role %}

Now it's working...

answered Dec 28, 2017 at 14:26

user7289982

2 Comments

Smaïne Over a year ago

why don't create a helper that transform your string roles in an array then use the classical if var in varArray ?

user7289982 Over a year ago

I've just did it, app.user.role is loaded straight from session, now I transform that into array and It's working as expected

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