Field type 'key_value' gives notice: array to string conversion

This topic has 2 replies, 2 voices, and was last updated 5 years ago by Yard.

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November 12, 2019 at 4:53 PM #16906
Yard
Participant
Hello,

I've created a metabox field with the type 'key_value'. when viewing my metabox field it displays an notice: Notice: Array to string conversion in /Users/User/Desktop/Development/project-kwintes-portal/htdocs/wp-content/plugins/meta-box/inc/fields/key-value.php on line 101. This only happens while creating a new page.

Here is an example of my code:
```
[
    'id'          => "{$keyName}_scroll_tabs",
    'name'        => __('Vul de titel in en het ID in van het element waar naartoe gescrollt dient te worden.', 'fusion'),
    'type'      => 'key_value',
    'placeholder' => ['key' => 'Titel', 'value' => 'Anchor ID'],
    'multiple'      => true,
    'clone'       => true,
    'add_button' => __('Set toevoegen', 'fusion')
]
```
When I create the page en publish it the Notice is gone.

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November 14, 2019 at 10:30 AM #16929

Anh Tran
Keymaster

I've just tried with the code and don't see the notice. Can you check that again?

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November 22, 2019 at 5:02 PM #17076
Yard
Participant
As college of topic starter, I dug a bit deeper, and found that adding a default, did help:
```
[
    'id'          => "{$keyName}_scroll_tabs",
    'name'        => __('Vul de titel in en het ID in van het element waar naartoe gescrollt dient te worden.', 'fusion'),
    'type'      => 'key_value',
    'placeholder' => ['key' => 'Titel', 'value' => 'Anchor ID'],
    'std' => ['key' => ''],
    'multiple'      => true,
    'clone'       => true,
    'add_button' => __('Set toevoegen', 'fusion')
]
```
Maybe it's useful to add a default value of an empty string.

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