PMPro Approval Addon customization (temporary gist)

gistfile1.txt

/**
	 * Send an email to admin and membership approvers when a user has signed up for a membership level that requires approval.
	 *
	 */
	public static function pmpro_after_change_membership_level( $level_id, $user_id ){

		//check if level requires approval, if not stop executing this function and don't send email.
		if( !PMPro_Approvals::requiresApproval( $level_id ) ){
			return;
		}

		$mail_recipients = array();
		//get admin email address to email admin.
		$mail_recipients[] = get_bloginfo( 'admin_email' );

		// This meta field is added via PMPro register helper field.
		// At the time this function is fired, the data is not (yet) saved in the database. 
		// So question is if there is an action which if fired after saving meta data, where we can hook this function. 
		$user_society = get_user_meta( $user_id, 'society', true );

		$approvers = array();

		if (! '' == $user_society ) {
			$approvers = get_users( array(
				'meta_key' => 'society',
				'meta_value' => $user_society,
				'role' => 'pmpro_approver',
			));
		}
		// Get email addresses of approver users
		$approvers = array_map(
			function( $approver ){
				return $approver->user_email;
			},
			$approvers
		);

		// Add approvers to mail recipients
		$mail_recipients = array_merge( $mail_recipients, $approvers );

		$admin_approval_email = new PMProEmail();

		$admin_approval_email->email = $mail_recipients;
		$admin_approval_email->subject = __( 'A user is pending approval for webinar access', 'pmpro-approvals' );
		$admin_approval_email->template = 'admin_notification_approved'; //Update email template for admins.
		$admin_approval_email->body .= file_get_contents( dirname( __FILE__ ) . "/email/admin_notification.html" );
		$admin_approval_email->body .= '<h1 style="margin: 0 0 10px 0; font-family: sans-serif; font-size: 18px; line-height: 125%; color: #333333; font-weight: normal;">Dear Approver,</h1>';
		$admin_approval_email->body .= '<p><a href="' . get_admin_url() . 'admin.php?page=pmpro-approvals&user_id=' . $user_id . '">View user details</a><p>';
		$admin_approval_email->body .= '<p>Kind Regards,<br />Customer Desk</p>';
		$admin_approval_email->body .= '</td></tr></table>';

		$admin_approval_email->sendEmail();

	}