Creating an array within for loop with Twig

Question

I'm trying to create an array and store values in it within for loop but failed so far. How can I do it with Twig?

I've read these but being new in Twig makes it hard to convert into my case.

PLAIN PHP LOGIC IS THIS:

foreach ($array as &$value)
{
   $new_array[] = $value;
}

foreach ($new_array as &$v)
{
   echo $v;
}

WHAT I'VE TRIED WITH TWIG:

{% for value in array %}
    {% set new_array = new_array|merge([value])  %}
{% endfor %}

{% for v in new_array %}
   {{ v }}
{% endfor %}

It is OK if you define the new_array as array before the first loop: {% set new_array = [] %}. — VisioN
– VisioN, Commented Jun 4, 2014 at 17:05

BentCoder · Accepted Answer · 2014-06-05 11:00:43Z

27

Solved by following Vision's suggestion:

{% set brands = [] %}
{% for car in cars %}
    {% if car not in brands %}
        {% set brands = brands|merge([car]) %}
    {% endif %}
{% endfor %}

{% for brand in brands %}
   {{ brand }}
{% endfor %}

Also I'll take bartek's comment into consideration next time. This was one off.

answered Jun 5, 2014 at 11:00

BentCoder

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Comments

bumerang · Accepted Answer · 2016-11-09 10:08:57Z

1

I have other solution for arrays in loop. This solution is letting you to make arrays like PHP:

$my_array[] = array('key_1' => $value1, 'key_2' => $value_2);

in this case:

{% set cars_details = [] %}
{% for car in cars %}
     <!-- This is the line of code that does the magic -->
    {% set car = car|merge({(loop.index0) : {'color': car.color, 'year': car.year} }) %}
{% endfor %}
{{ car|dump }}

answered Nov 9, 2016 at 10:08

bumerang

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3 Comments

Vishal Kumar Sahu Over a year ago

Have you revised your code to check if it is working? It is more confusing than solving problem.

bumerang Over a year ago

@Vishal Kumar Sahu You'r right, I will have to recheck my answer.

outline4 Over a year ago

I like how it creates a very specific array! Thanks!

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