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

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!

CodePudding user response：

I'm not totally sure what you're after and I'm not totally sure what your data structure looks like. But if your data looks like this:

$this->render('foo.html', [
    'categories' => [ 'Food', 'Car', 'Sport' ],
    'values' => [
        [ 'Food' => 861, 'Car' => 300, 'Sport' => 80 ],
        [ 'Food' => 12, 'Car' => 199, 'Sport' => 0 ]
    ]
]);

Something like this should work:

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

It should render this:

<table>
    <tr>
        <th>Food</th>
        <td>861</td>
        <td>12</td>
    </tr>
    ...
</table>

CodePudding user response：

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!