chosen and multiple not working when 'dataContainer' => 'File',

[benfolds]

Case:
A multiselect filed at the tl_settings. In this case i want so select one or more content elements.

'selectElement' => [
                'label'     => &$GLOBALS['TL_LANG']['tl_settings']['classNames']['selectElement'],
                'inputType' => 'select',
                'default'   => 'all',
                'eval'      => [
                    'style'              => 'width:250px',
                    'chosen'             => true,
                    'multiple'           => true
                ],
                'options_callback'  => ['tl_settings_helper', 'getContentElements'],
                'reference' => &$GLOBALS['TL_LANG']['CTE'],
            ]

Behaviour
The field itself is working fine but when saving all setting inside the multicolumn wizard break. Guess the problem is saving an serialized array insinde a serialized array?

[zonky2]

wrapp code in tree ticks "```"

[discordier]

This is a problem of DC_File then, isn't it?

[benfolds]

hm, i guess the "normal" fields can not have nested serialized arrays, this could be only when using the multicolumnwizard, right? So maybe the array inside the array must be stored different? or you can escape the specialchars for the nested array when using this settings for this data container..

[discordier]

No, there is also (at least) the module wizard widget and checkbox wizard in the core - do these work?

[benfolds]

Just checked it:
The checkbox wizard design is broken inside the multicolumnwizard but the values will be stored correctly

[discordier]

Design is another issue.

So I fear the problem is, that file uuids are stored as binary and this simply does not work correctly when writing it to a plain PHP file.
I am sorry but I fear there is nothing we can do here, as the serialized array is correct (from PHPs point of view) but the saving and loading of localconfig.php seems to not cope correctly with binary (which is not a big surprise as it is a text file).

On the other hand, localconfig.php and the system settings in the backend are considered deprecated since Contao 4.0 and all settings shall be migrated to settings files (config.yml and the like) over time and therefore you should search for a better point to save your data anyway, I suggest an own database table for user editable data or a static config on the file system (using the file path instead of the id) for data only to be manipulated by the system administrator and not to be manipulated.

[benfolds]

Get your point with the localconfig.php, it's just easygoing to store system-wide info here :) It seems a bit too overengineered to store that in an own database...

But the problem there is not to store UUID's. I just have a dropdown of available content elements ...

[discordier]

Ah sorry, misunderstood, I thought you were storing file pickers, I don't know why...

[Total-Reality]

I can't reproduce it with Contao 4.9 & MCW 3.4.9
However I tested it with options instead of "options_callback".

Please post your complete code.

This works:

$GLOBALS['TL_DCA']['tl_settings']['fields']['test'] = array
(
    'inputType' => 'multiColumnWizard',
    'eval'      => array
    (
        //'columnsCallback' => array('tl_mcw_test', 'getTestFields'),
        'columnFields' => array
        (
          'text' => array
          (
            'label'              => 'text',
            'default'            => 'Bla',
            'inputType'          => 'text',
            'eval'               => array('maxlength'=>5, 'style'=>'width:50px', 'readonly'=>true) //, 'nospace'=>true, 'trailingSlash'=>true
          ),
          'select' => array
          (
            'label'              => 'select',
            'default'            => 'b',
            'inputType'          => 'select',
            'options'            => array('s' => 'Sidney', 'b' => 'Bristol'),
            'eval'               => array('chosen' => true, 'multiple' => true, 'includeBlankOption' => true)
          ),
      ),
    )
);

[zonky2]

works fine