View file cannot be found when creating new class

Question

Edit

I have two separate add-ons in play here with EE 3.5.3

• addons/project/ext.project.php
• addons/project_mailer/mod.project_mailer.php
• addons/project_mailer/views/mail_template.php

---

I've got an extension set up that includes a module file, so that I can call a function from it later on (see below).

<?php
/**
 * File: ext.project.php
 **/

if ( ! class_exists( 'Project_mailer' ) )
{
    require_once( PATH_THIRD . 'project_mailer/mod.project_mailer.php' );
}

// Code and stuff

$mailer = new Project_mailer();
$mailer->send_mail_update( $entry_id, $channel_id );
?>

This is all working fine and the function is called however when I try to load a view from it I'm getting an error: Unable to load the requested file: mail_template.php

My assumption is that because I'm creating a new instance of the class it's looking for the view file relative to my extension rather than the module? (Correct me if I'm wrong on that though)

I've attached a copy of the code within the send_mail_update function below. I tried to use the commented out line instead however the same error appears but with the full path included.

<?php
/**
 * File: mod.project_mailer.php
 **/

public function send_mail_update( $entry_id, $channel_id )
{
    // Code and stuff

    return ee()->load->view( 'mail_template', $data, TRUE );
    //ee()->load->view( PATH_THIRD . 'project_mailer/views/mail_template', $data, TRUE );

}

Is there any way to get the view to show correctly in my current set up?

Thank you.