Woocommerce - email change header title WordPress

stiffler comments:

no, i only want to change the text what is passed by $email_heading. No html tags or markups.
In your example the output from line 49.

wc_get_template( 'emails/email-header.php', array( 'email_heading' => $email_heading ) );
calls email-header.php with the variable $email_heading which cotains an string. is this true?

and i want to change the $email_heading strings content with the action "do_action( 'woocommerce_email_header', $email_heading, $email );"

Reigel Gallarde comments:

ok... so if you're only editing the heading text, then this can be done in your functions.php...

In general, it looks like this...
function filter_woocommerce_email_heading( $email_heading , $email ) {
// make filter magic happen here...
// making $email_heading = 'New generated heading text'
return $email_heading;
};

// add the filter
add_filter( "woocommerce_email_heading_{$id}", 'filter_woocommerce_email_heading', 10, 2 );

where you need to replace {$id} with the template id... example for new account, id is customer_new_account... so the filter looks like add_filter( "woocommerce_email_heading_woocommerce_email_heading_", 'filter_woocommerce_email_heading', 10, 2 );

to get this id, you have to check the files located in woocommerce/includes/emails
should be inside public function __construct() { } of each file...

and few times, you might see that code above will not work for some email templates... this is because they have their own implementation of get_heading()... in these cases, you can look for this function and look at the filter function inside... for example, inside woocommerce/includes/emails folder is a file class-wc-email-customer-invoice.php... if you take a look at this, it has it's own get_heading() function... other files do not...

the function is like

public function get_heading() {
if ( $this->object->has_status( array( 'completed', 'processing' ) ) ) {
return apply_filters( 'woocommerce_email_heading_customer_invoice_paid', $this->format_string( $this->heading_paid ), $this->object );
} else {
return apply_filters( 'woocommerce_email_heading_customer_invoice', $this->format_string( $this->heading ), $this->object );
}
}


for this you can create another filter like the filter_woocommerce_email_heading...

function filter_woocommerce_email_heading_customer_invoice( $email_heading , $email ) {
// make filter magic happen here...
// making $email_heading = 'New generated heading text for customer invoice'
return $email_heading;
};

// add the filter
add_filter( "woocommerce_email_heading_customer_invoice", 'filter_woocommerce_email_heading_customer_invoice', 10, 2 );

function filter_woocommerce_email_heading_customer_invoice_paid( $email_heading , $email ) {
// make filter magic happen here...
// making $email_heading = 'New generated heading text for customer invoice which is paid'
return $email_heading;
};

// add the filter
add_filter( "woocommerce_email_heading_customer_invoice_paid", 'filter_woocommerce_email_heading_customer_invoice_paid', 10, 2 );

Reigel Gallarde comments:

typo error above

so the filter looks like add_filter( "woocommerce_email_heading_woocommerce_email_heading_customer_new_account", 'filter_woocommerce_email_heading', 10, 2 );

Reigel Gallarde comments:

I hate it when I can't edit my typo errors.. sorry..

add_filter( "woocommerce_email_heading_customer_new_account", 'filter_woocommerce_email_heading', 10, 2 );

Reigel Gallarde comments:

I'd like to mention that you don't need to create multiple functions for the given {$id}

function filter_woocommerce_email_heading( $email_heading , $email ) {
// make filter magic happen here...
// making $email_heading = 'New generated heading text'
return $email_heading;
};

// add the filter
add_filter( "woocommerce_email_heading_customer_new_account", 'filter_woocommerce_email_heading', 10, 2 );
add_filter( "woocommerce_email_heading_cancelled_order", 'filter_woocommerce_email_heading', 10, 2 );
add_filter( "woocommerce_email_heading_customer_completed_order", 'filter_woocommerce_email_heading', 10, 2 );

this will already cover the 3 templates... assuming, they all do the same manipulation... or you can do ifs using $email object... like if ('customer_completed_order' === $email->id) {$email_heading = 'Cool heading'; }

stiffler comments:

AMAZING!

Works like a charme.

Thanks
steve