jQuery(document).ready(function ($) {
    $(document).on('click', "button[class*='upload_']", function (e) {
        e.preventDefault()
        var $button = $(this)
        if (file_frame) {
            file_frame.open()
            return
        }
        var file_frame = (wp.media.frames.file_frame = wp.media({ library: { type: 'image' }, multiple: false }))
        file_frame.on('select', function () {
            var attachment = file_frame.state().get('selection').first().toJSON()
            $button.siblings('input').val(attachment.url).change()
        })
        file_frame.open()
    })
})