Skip foreach loop, get value from first item

Kirby 3 Questions 🤔
1

Below code works but how do you skip the foreach loop altogether? In my scenario there will always be one row. Would be awesome if someone could help :slight_smile:

'rows' => function ($value) {
    $rows  = Yaml::decode($value);
    $value = [];

    foreach ($rows as $index => $row) {
      if($index == 0) {
        if (is_array($row) === false) {
            continue;
        }

        $value[] = $this->form($row)->values();
      }
    }

    return $value;
}

I’m working on a custom field that is exactly as the structure field but you can only add one item. I was thinking to skip all foreach loops as they are not necessary because there will always only be one row. Help much appreciated!

2 
$rows[0]

should give you the first item.

3

Something like :thinking: (not working yet):

'rows' => function ($value) {
    $rows  = Yaml::decode($value);
    $value = $rows[0]->values();

    return $value;
}
4

You can’t call values on an array item

5

What about like that?

return $this->form($rows[0])->values();
6

Still getting “Undefined offset: 0”

Full plugin:

<?php

Kirby::plugin('your/plugin', [
    'fields' => [
        'hello' => [
            'extends' => 'structure',
            'methods' => [
              'rows' => function ($value) {
                  $rows  = Yaml::decode($value);

                  return $this->form($rows[0])->values();
              },
          ]
        ]
    ]
]);
7

It may give an error because I do not know the data. We can add additional control:

return empty($rows) === false ? $this->form(current($rows))->values() : [];
8

No error but existing fields are empty… no data.

–

A question within the question, I’m asking this because it might be part of the issue :thinking:

If I copy the full method (see below) from the original structure field, I get this error: Class 'Form' not found

In my original plugin above, I didn’t include the ‘form’ do I need to include this?

<?php

Kirby::plugin('your/plugin', [
    'fields' => [
        'hello' => [
            'extends' => 'structure',
            'methods' => [
                'rows' => function ($value) {
                    $rows  = Yaml::decode($value);
                    $value = [];

                    foreach ($rows as $index => $row) {
                        if (is_array($row) === false) {
                            continue;
                        }

                        $value[] = $this->form($row)->values();
                    }

                    return $value;
                },
                'form' => function (array $values = []) {
                    return new Form([
                        'fields' => $this->attrs['fields'],
                        'values' => $values,
                        'model'  => $this->model
                    ]);
                },
            ]
        ]
    ]
]);
9

Try with new Kirby\Form\Form()?

10

Thanks, yes that fixed the form not found issue.