Loop through multidimensional Array with a variable as a property for another variable

Question

I need to loop through an multidimensional array in twig.

//EDIT: I still haven't found the solution, i tried the suggestion with attribute, but it did not work.. here you can see the whole code plus error message, maybe someone can help me. I really try to unterstand the problem, but every attempt at a solution fails :/

First i have the array category with different strings.
The strings are user-defined, so they are different depending on the user. E.g.: Car, Food, Sport

The second array array is multidimensional an looks like this:

array(12) {
  ["01"]=>
  array(3) {
    ["Food"]=>float(861)
    ["Car"]=>float(300)
    ["Sport"]=>float(80)
  }
  ["02"]=>
  array(3) {
    ["Food"]=>float(12)
    ["Car"]=>float(199)
    ["Sport"]=>int(0)
  }
  ["03"]=>
  array(3) {
   ["Food"]=>int(0)
    ["Car"]=>int(0)
    ["Sport"]=>float(80)
  }
… 9 more

My Twig Code looks like this

           {% for category in categorys %}
           <tr>
                <th>{{category}}</th>
                 
                 {% for line in array %}  
                    <td> {{ attribute(line, category) }} </td
                 {% endfor %}

            </tr>
            {% endfor %}
         

The final table should look like this:

| Food | 861 | 300 | 80 |

| Car | 12 | 199 |0 |

| Sport | 0 | 0 | 80 |

When i use the attribute functions the errormessage is: Illegal offset type in isset or empty

**TypeError in C:\xampp\htdocs\MMM2\vendor\twig\twig\src\Extension\CoreExtension.php (line 1437)

--> if (((\is_array($object) || $object instanceof \ArrayObject) && (isset($object[$arrayItem]) || \array_key_exists($arrayItem, (array) $object))) || ($object instanceof ArrayAccess && isset($object[$arrayItem]))**

How can i use the variable category in this context? Maybe someone can help me, I don't know how to continue.. Thanks in advance!

Answer 1

Okay guys, thanks to everyone, especially to Bjorn for the help. I finally found my problem because of a zoomtalk with a friend of mine who is more experienced than me in php.

My problem was the category-array.. This array saved not only texts but entire objects.. so i must add .name to category, that i get the Strings "Food, Car, Sport"...

The answer looks like this

<table>
    {% for category in categories %}
        <tr>
            <th>{{ category }}</th>
            {% for line in values %}
                <td>{{ attribute(line, category.name) }}</td>
            {% endfor %}
        </tr>
    {% endfor %}
</table>

Thanks again for your effort!