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I'm writing a custom plugin and i would like to add the "Add Media" button.

I just need to upload media, not to retrieve any content/data from the uploaded file.

How can I add this button?

Thanks

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2 Answers 2

up vote 5 down vote accepted

If you want to add a add media button to your admin panels:

You need to use wp_enqueue_media();

    add_action ( 'admin_enqueue_scripts', function () {
        if (is_admin ())
            wp_enqueue_media ();
    } );

Then use this js:

    if ($('.set_custom_images').length > 0) {
    if ( typeof wp !== 'undefined' && wp.media && wp.media.editor) {
        $('.wrap').on('click', '.set_custom_images', function(e) {
            e.preventDefault();
            var button = $(this);
            var id = button.prev();
            wp.media.editor.send.attachment = function(props, attachment) {
                id.val(attachment.id);
            };
            wp.media.editor.open(button);
            return false;
        });
    }
};

Use this html:

        <p>
            <input type="number" value="" class="regular-text process_custom_images" id="process_custom_images" name="" max="" min="1" step="1">
            <button class="set_custom_images button">Set Image ID</button>
        </p>
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Perfect! I just wants to replace "$" with "jQuery" and everything works as expected! Thank you. –  Libin Dec 31 '14 at 11:01

Show thumbnail preview instead of number

Just as a tweak, I did this...

changed the number input to hidden.

added:

$imgid =(isset( $instance[ 'imgid' ] )) ? $instance[ 'imgid' ] : "";
$img    = wp_get_attachment_image_src($imgid, 'thumbnail');

And then... above the hidden field.

if($img != "") {
?>
  <img src="<?= $img[0]; ?>" width="80px" /><br />
<?php 
}

That will make a thumbnail visible in the user end instead of a number :)

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