Fixed selecitze field not properly updating its value when the options attribute is provided and more than one option is selected.

[parcand]

See #1229

[rhukster]

I'm not really able to get this to work, even with your last field definition:

  someselect:
      type: selectize
      label: Preface
      selectize:
        items:
          - ABC
          - DEF
        options:
          - text: ABC
            value: ABC
          - text: DEF
            value: DEF
          - text: GHI
            value: GHI
      validate:
        type: commalist

Is this what you have? What's the purpose of the selectize: items: ? No matter what i put i don't get any values saved.

[parcand]

Oh, I'm sorry, I can see where the confusion comes from.

I am no longer providing the selectize: items: as part of the field definition. This pull request introduces a small change which now automatically populate theselectize: items: from the actual field value.

Just to give you a bit of background information, it appears that using the selectize: options: attribute leads to a small glitch which prevents the widget from properly loading the comma-separated values from the HTML input element itself. For some reason it only loads a single item, even if you previously saved more that one.

So in order to fix that problem you need to pass pre-selected values directly to the widget using theselectize: items:. It would be quite impractical to do it at the blueprint level, that's why I came up with this solution which merge values directly in the twig template of the selectize widget.

    someselectize:
      type: selectize
      label: A selectize field
      selectize:
        options:
          - text: ABC
            value: ABC
          - text: DEF
            value: DEF
          - text: GHI
            value: GHI
      validate:
        type: commalist

[parcand]

I've done some tests with an up-to-date Grav installation and it seems to work as expected, for both config blueprints and pages blueprints (with the header field name prefix).