Elena Politi Elena Politi - 23 days ago 8
PHP Question

Adding a custom woocommerce email based on the product attribute

I have tried to adapt the custom email plugin found on https://www.skyverge.com/blog/how-to-add-a-custom-woocommerce-email/

My intention is that if customer choose a product (it is a variable product) that has a specific attribute, a custom email is sent when the customer makes a new order (it has to be sent either it is pending or processing).

My atribute slug is "csr-dates". The custom plugin is composed (see the link above) by two files: woocommerce-csr-order-email.php and (stored in "includes" folder) class-wc-csr-order-email.php

I guess that the problem is in the class file, which I report here:

<?php

if ( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly

/**
* A custom Order WooCommerce Email class
*
* @since 0.1
* @extends \WC_Email
*/
class WC_CSR_Order_Email extends WC_Email {


/**
* Set email defaults
*
* @since 0.1
*/
public function __construct() {

// set ID, this simply needs to be a unique name
$this->id = 'customer_csr_order';
$this->customer_email = true;
// this is the title in WooCommerce Email settings
$this->title = 'CSR Cruise Order';

// this is the description in WooCommerce email settings
$this->description = 'CSR Cruise Order Notification emails are sent when a customer places an order for a CSR cruise';

// these are the default heading and subject lines that can be overridden using the settings
$this->heading = 'CSR Cruise Order';
$this->subject = 'CSR Cruise Order';

// these define the locations of the templates that this email should use, we'll just use the new order template since this email is similar
$this->template_html = 'emails/customer-processing-order-csr.php'; //qui posso duplicare il template e farne uno ad hoc per questo tipo di mail con i file attached
$this->template_plain = 'emails/plain/customer-processing-order.php';

// Trigger on new paid orders
add_action( 'woocommerce_order_status_pending_to_processing_notification', array( $this, 'trigger' ) );
add_action( 'woocommerce_order_status_failed_to_processing_notification', array( $this, 'trigger' ) );
add_action( 'woocommerce_order_status_pending_to_on-hold_notification', array( $this, 'trigger' ) );
add_action( 'woocommerce_order_status_failed_to_on-hold_notification', array( $this, 'trigger' ) );
// Call parent constructor to load any other defaults not explicity defined here
parent::__construct();


// if none was entered, just use the WP admin email as a fallback
if ( ! $this->recipient )
$this->recipient = get_option( 'admin_email' );
}


/**
* Determine if the email should actually be sent and setup email merge variables
*
* @since 0.1
* @param int $order_id
*/
public function trigger( $order_id ) {

// bail if no order ID is present
if ( ! $order_id )
return;

$order = new WC_Order( $order_id );

//step 1) find first the product_id
$items = $order->get_items();
foreach ( $items as $item ) {
$product_id = $item['product_id'];
}
//set 2) from the product_id get the product attribute
$product = new WC_Product( $product_id ); // create an object of WC_Product class

$patt = $product->get_attribute(); // call get_attribute method

//step 3) condition valid to send the email (if the attributes is csr-dates)
if ( $patt == 'pa_csr-dates' )
{
//send the email
// setup order object
$this->object = new WC_Order( $order_id );
$this->recipient = $this->object->billing_email;

// replace variables in the subject/headings
$this->find[] = '{order_date}';
$this->replace[] = date_i18n( woocommerce_date_format(), strtotime( $this->object->order_date ) );

$this->find[] = '{order_number}';
$this->replace[] = $this->object->get_order_number();

if ( ! $this->is_enabled() || ! $this->get_recipient() )
return;

// woohoo, send the email!
$this->send( $this->get_recipient(), $this->get_subject(), $this->get_content(), $this->get_headers(), $this->get_attachments() );

}

else
{
return; //do nothing if is not csr-dates attribute
}
}


/**
* get_content_html function.
*
* @since 0.1
* @return string
*/
public function get_content_html() {
ob_start();
woocommerce_get_template( $this->template_html, array(
'order' => $this->object,
'email_heading' => $this->get_heading(),
'sent_to_admin' => false,
'plain_text' => false,
'email' => $this
) );
return ob_get_clean();
}


/**
* get_content_plain function.
*
* @since 0.1
* @return string
*/
public function get_content_plain() {
ob_start();
woocommerce_get_template( $this->template_plain, array(
'order' => $this->object,
'email_heading' => $this->get_heading(),
'sent_to_admin' => false,
'plain_text' => true,
'email' => $this
) );
return ob_get_clean();
}


/**
* Initialize Settings Form Fields
*
* @since 2.0
*/
public function init_form_fields() {

$this->form_fields = array(
'enabled' => array(
'title' => 'Enable/Disable',
'type' => 'checkbox',
'label' => 'Enable this email notification',
'default' => 'yes'
),
'subject' => array(
'title' => 'Subject',
'type' => 'text',
'description' => sprintf( 'This controls the email subject line. Leave blank to use the default subject: <code>%s</code>.', $this->subject ),
'placeholder' => '',
'default' => ''
),
'heading' => array(
'title' => 'Email Heading',
'type' => 'text',
'description' => sprintf( __( 'This controls the main heading contained within the email notification. Leave blank to use the default heading: <code>%s</code>.' ), $this->heading ),
'placeholder' => '',
'default' => ''
),
'email_type' => array(
'title' => 'Email type',
'type' => 'select',
'description' => 'Choose which format of email to send.',
'default' => 'html',
'class' => 'email_type',
'options' => array(
'plain' => __( 'Plain text', 'woocommerce' ),
'html' => __( 'HTML', 'woocommerce' ),
'multipart' => __( 'Multipart', 'woocommerce' ),
)
)
);
}


} // end \WC_CSR_Order_Email class


I imagine that something is wrong in the code I wrote to get the attribute (step 1-2) and/or the condition to send the email (step 3).

Could somebody help me in solve this problem? Thank you

Answer

Instead of using get_attribute() function you should try to use get_attributes() this way:

//set 2) from the product_id get the product attribute
$product = new WC_Product( $product_id );  // create an object of WC_Product class

$patt = $product->get_attributes();  // call get_attributes method

//step 3) condition valid to send the email (if the attributes is csr-dates)
if ( array_key_exists('pa_csr-dates', $patt) ) 
{

Try it, this should work…