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Autosize textareas in admin

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This is a simple addition to the admin to automatically resize textareas according to their content. It doesn't work with CKE fields tough.

All it needs is a hook in ready.php + copying autosize.min.js to the "site" folder (or elsewhere if you feel so).

/site/ready.php:

// autosize textareas in admin
$page->addHookAfter('render', function ($event) {

    if ($this->page->template != 'admin') return;

    $autoSizeJsUrl = wire('config')->urls->site . 'autosize.min.js';

    $js = <<< HTML
 <script>
var autosizeTextareas = document.querySelectorAll('textarea');

if (autosizeTextareas.length) {
    $.getScript("$autoSizeJsUrl", function () {
        autosize(autosizeTextareas);
    });
}

$('.langTabs').on('tabsactivate', function(event, ui) {
    var textareas = ui.newPanel.get(0).querySelectorAll('textarea');
    
    if(textareas.length && window.autosize && window.autosize.update) {
        autosize.update(textareas);
    }
});
</script>
HTML;

    $event->return = str_replace('</body>', $js . PHP_EOL . '</body>', $event->return);
});

post-3156-0-28991300-1459947770_thumb.gi

Edit:

fixed updating textareas on activating language tabs (heights weren't updated)

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Thanks netcarver. I have an idea to collect such mini-modules into a one admin helper module but as usual I don't know when will I have to do that :)

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Just tried the AutoGrow CKEditor plugin and works fine (PW 3.013, CKEditor with Lightwire theme).

You can add options like these to the "Custom Config Options" to the CKEditor PW field settings:

autoGrow_onStartup: true
autoGrow_bottomSpace: 20

Or to "/site/modules/InputfieldCKEditor/config.js" if you prefer:

CKEDITOR.editorConfig = function (config) {
    config.autoGrow_onStartup = true;
    config.autoGrow_bottomSpace = 20;
};
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Yes, it was made using PW3. netcarver's module should work fine too, or you can use AdminOnSteroids in which there are some improvements too.

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My best guess is that you try I on a CKEditor field and not on a simple textarea. In this case you need the Auto Grow plugin (see above).

If not, do you have any js error in the browser console?

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Have you copied autosize.min.js to the "site" folder?

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