install.xml

<?xml version="1.0" encoding="UTF-8"?>
<modification>
	<name>Linked Options</name>
	<code>Linked Options</code>
	<version>0.0.4</version>
	<link>https://github.com/intosKai/opencart-linkedoptions</link>
	<author>Petr Ivanov (info@ioqu.pro)</author>
		
		<file path="catalog/controller/product/product.php">
			<operation error="skip">
				<search><![CDATA[$this->load->model('tool/image');]]></search>
				<add position="before"><![CDATA[
					$this->document->addStyle('catalog/view/theme/default/stylesheet/custom_option.css');
					$this->load->model('catalog/customoptions');
					$custom_options = $this->model_catalog_customoptions->getCustomOption($this->request->get['product_id']);
            		foreach ($custom_options as &$option) {
                		foreach ($option['values'] as &$value) {
                    		$value['href'] = $this->url->link('product/product', 'product_id=' . $value['product_id']);
                    		$value['class'] = ($this->request->get['product_id'] == $value['product_id']) ? 'active' : '';
                		}
            		}
            		$data['custom_options'] = $custom_options;
				]]></add>
			</operation>				
		</file>	
		
		<file path="catalog/view/theme/*/template/product/product.tpl">
			<operation error="skip">
				<search><![CDATA[<h1><?php echo $heading_title; ?></h1>]]></search>
				<add position="after"><![CDATA[			
					<?php if ($custom_options) { ?>
          				<?php foreach ($custom_options as $option) { ?>
          					<h2 class="custom_option_header"><?php echo $option['name']?></h2>
          					<div class="custom_options">
            				<?php foreach ($option['values'] as $value) { ?>
            					<div class="custom_option">
              					<a href="<?php echo $value['href']; ?>" class="<?php echo $value['class']; ?>">
                				<?php if ($option['type'] == 1) { ?>
                					<div class="color_block" style="background:<?php echo $value['value'] ?>"></div>
                				<?php } else { ?>
                					<?php echo $value['value']; ?>
                				<?php } ?>
              					</a>
            					</div>
            				<?php } ?>
          					</div>
          				<?php } ?>
          			<?php } ?>
				]]></add>
			</operation>				
		</file>

		<file path="catalog/view/theme/netstore/template/product/product.tpl">
			<operation error="skip">
				<search><![CDATA[<?php if ($price) { ?>]]></search>
				<add position="before"><![CDATA[			
					<?php if ($custom_options) { ?>
          				<?php foreach ($custom_options as $option) { ?>
          					<h2 class="custom_option_header"><?php echo $option['name']?></h2>
          					<div class="custom_options">
            				<?php foreach ($option['values'] as $value) { ?>
            					<div class="custom_option">
              					<a href="<?php echo $value['href']; ?>" class="<?php echo $value['class']; ?>">
                				<?php if ($option['type'] == 1) { ?>
                					<div class="color_block" style="background:<?php echo $value['value'] ?>"></div>
                				<?php } else { ?>
                					<?php echo $value['value']; ?>
                				<?php } ?>
              					</a>
            					</div>
            				<?php } ?>
          					</div>
          				<?php } ?>
          			<?php } ?>
				]]></add>
			</operation>				
		</file>
</modification>