October: Saving a multiselect dropdown on backend form

[bkrajendra]

I'm trying to render a multiselect dropdown on backend form by using field property :

    nearby_destinations:
        label: Nearby Destinations
        type: dropdown
        attributes:
            multiple: true

this is properly rendering as multiselect dropdown but while saving it only saves last value to database. Ive tried to make it jsonable but still not working.
Please help!

[Gregbee]

I asked this question on SO
http://stackoverflow.com/questions/35620124/october-cms-create-a-multi-select-form-field/35786243#35786243
It work but it is limited you can only use yaml options

[daftspunk]

Just use a type partial instead and render anything you like. Dropdown does not support multiple at this stage. I assume it doesn't work because the input name must be an array, eg: name=MyModel[nearby_destinations][]

Copy the content from modules\backend\widgets\form\partials\_field_dropdown.htm to get an idea of what to put in the partial.

[bkrajendra]

yes @daftspunk , as I can see from chrome console is that it returns :

Destinations[nearby_destinations]:value1
Destinations[nearby_destinations]:value2

two times... thats why it doesn't work.
and finally it only saves last one.

So is there any way to turn it into array if its multiselect.?

I was trying partial but not aware of what to put in partial and also how to get all options rendered in it.
I'll try ur suggestion and reply..!
Thanks!!

[daftspunk]

<?php
    $fieldOptions = $field->options();
?>
<!-- Dropdown -->
<?php if ($this->previewMode): ?>
    <div class="form-control"><?= (isset($fieldOptions[$field->value])) ? e(trans($fieldOptions[$field->value])) : '' ?></div>
<?php else: ?>
    <select
        id="<?= $field->getId() ?>"
        name="<?= $field->getName() ?>[]"
        class="form-control custom-select"
        multiple
        <?= $field->getAttributes() ?>>
        <?php if ($field->placeholder): ?>
            <option value=""><?= e(trans($field->placeholder)) ?></option>
        <?php endif ?>
        <?php foreach ($fieldOptions as $value => $option): ?>
            <?php
                if (!is_array($option)) $option = [$option];
            ?>
            <option
                <?= $value == $field->value ? 'selected="selected"' : '' ?>
                <?php if (isset($option[1])): ?>data-<?=strpos($option[1],'.')?'image':'icon'?>="<?= $option[1] ?>"<?php endif ?>
                value="<?= $value ?>">
                    <?= e(trans($option[0])) ?>
            </option>
        <?php endforeach ?>
    </select>
<?php endif?>

Note name="<?= $field->getName() ?>[]" that should pass an array instead.

[daftspunk]

There has been a new taglist form field that is essentially a multiple select dropdown.

[bkrajendra]

Thanks for this update. !