当客户在opencart扩展中的结帐/成功页面时，如何检索订单ID？

Question

I'm developing an extension for opencart 2.3. I want to retrieve the order Id when a customer comes to checkout/success page. This is my code in the extension?

if(isset($this->request->get['route']) && $this->request->get['route'] == "checkout/success")
{
  if (isset($this->session->data['order_id']) && (!empty($this->session->data['order_id']))) 
     { $order_id = $this->session->data['order_id']; ... }
}

I know this doesn't work because I saw this code unset($this->session->data['order_id']); in \catalog\controller\checkoutsuccess.php.

can anybody help me about this without touching to main document of opencart?

Answer 1

I have a free vqMod extension that does this very thing. It's at https://www.opencart.com/index.php?route=marketplace/extension/info&extension_id=18125

Note: To use vqMod extensions, you must first install vqMod for OpenCart. Details and instructions available here: https://github.com/vqmod/vqmod/wiki/Installing-vQmod-on-OpenCart

You have to save off this value before it gets cleared (as you noted) and then you can display it later. That's what my mod does.

Logic:

<file name="catalog/language/en-gb/checkout/success.php">
        <operation info="Add language string">

                <search position="after"><![CDATA[
                // Text
                ]]></search>

                <add><![CDATA[
                $_['text_order']   = 'Your order ID is %s.';
                ]]></add>

        </operation>
</file>
<file name="catalog/controller/checkout/success.php">
        <operation info="Save Order ID">

                <search position="after"><![CDATA[
                 if (isset($this->session->data['order_id'])) {
                ]]></search>

                <add><![CDATA[
                $this->session->data['last_order_id'] = $this->session->data['order_id'];
                ]]></add>

        </operation>
</file>
<file name="catalog/controller/checkout/success.php">
        <operation info="Output Order ID">

                <search position="before"><![CDATA[
                $data['button_continue']
                ]]></search>

                <add><![CDATA[
                $data['text_message'] .= sprintf($this->language->get('text_order'),  $this->session->data['last_order_id']);
                ]]></add>

        </operation>
</file>