Set uikit classes to joomla form

joomla-form-uikit.php

<?php 
// Set uikit form
foreach ($this->form->getFieldsets() as $key => $fieldset)
{
	foreach ($this->form->getFieldset($key) as $field)
	{
		$name  = $field->fieldname;
		$group = $field->group;
		$type  = strtolower($field->type);
		$class = $this->form->getFieldAttribute($name, 'class', '', $group);
		$input = $field->input;
		if ($type === 'text')
		{
			$class .= 'uk-input';
		}
		if ($type === 'list' || preg_match('#<select#', $input))
		{
			$class .= 'uk-select';
		}
		elseif ($type === 'textarea' || preg_match('#<textarea#', $input))
		{
			$class .= 'uk-textarea';
		}
		elseif ($type === 'range')
		{
			$class .= 'uk-range';
		}
		$this->form->setFieldAttribute($name, 'class', $class, $group);
	}
}