Allow Viewing of Other Customer Orders in WooCommerce

change-caps-to-allow-order-views.php

<?php
add_filter( 'user_has_cap', 'cci_check_view_order_capability', 10, 3 );
function cci_check_view_order_capability( $allcaps, $caps, $args ) {
    if ( isset( $caps[0] ) ) {
        switch ( $caps[0] ) {
            case 'view_order' :
                // Check that the current user billing_company and order billing company match.
                $current_user = wp_get_current_user();
                $current_user_billing_company = get_user_meta( $current_user->ID, 'billing_company', true );
                $order   = wc_get_order( $args[2] );
                if ( $order && $current_user_billing_company == $order->get_billing_company() ) {
                    $allcaps['view_order'] = true;
                }
            break;
        }
    }
    
    return $allcaps;
}

orders-with-same-billing-company.php

<?php
add_filter( 'woocommerce_my_account_my_orders_query', 'cci_change_customer_id' );
function cci_change_customer_id( $args ) {
    $current_user = wp_get_current_user();
    $current_user_billing_company = get_user_meta( $current_user->ID, 'billing_company', true );
    error_log( 'Current user billing company: '.var_export( $current_user_billing_company, true ) );

    // If billing company not set then WP_User_Query() returns all users so do a check first.
    if ( isset( $current_user_billing_company ) && strlen( $current_user_billing_company ) ) {
        $user_query = new WP_User_Query( array( 'fields' => 'ID', 'meta_key' => 'billing_company', 'meta_value' => $current_user_billing_company ) );
        $same_company_users = $user_query->get_results();
        error_log( 'WP_User_Query: ' . var_export( $same_company_users, true ) );

        $args[ 'customer' ] = $same_company_users;
    }
    else {
        error_log( 'No current user billing company so skip search for others in the same company.' );
    }
    return $args;
}

wc-allow-same-company-view-orders.php

<?php
/*
Plugin Name: Allow Viewing of Other Customer Orders in WooCommerce
Plugin URI: http://www.damiencarbery.com
Description: Allow customers to view the orders of other customers if they share the same Billing Company. See http://www.boards.ie/vbulletin/showthread.php?t=2057750045 for background.
Author: Damien Carbery
Version: 0.1
*/


add_filter( 'woocommerce_my_account_my_orders_query', 'cci_change_customer_id' );
function cci_change_customer_id( $args ) {
    $current_user = wp_get_current_user();
    $current_user_billing_company = get_user_meta( $current_user->ID, 'billing_company', true );
    error_log( 'Current user billing company: '.var_export( $current_user_billing_company, true ) );

    // If billing company not set then WP_User_Query() returns all users so do a check first.
    if ( isset( $current_user_billing_company ) && strlen( $current_user_billing_company ) ) {
        $user_query = new WP_User_Query( array( 'fields' => 'ID', 'meta_key' => 'billing_company', 'meta_value' => $current_user_billing_company ) );
        $same_company_users = $user_query->get_results();
        error_log( 'WP_User_Query: ' . var_export( $same_company_users, true ) );

        $args[ 'customer' ] = $same_company_users;
    }
    else {
        error_log( 'No current user billing company so skip search for others in the same company.' );
    }
    return $args;
}


add_filter( 'user_has_cap', 'cci_check_view_order_capability', 10, 3 );
function cci_check_view_order_capability( $allcaps, $caps, $args ) {
    if ( isset( $caps[0] ) ) {
		switch ( $caps[0] ) {
			case 'view_order' :
          // Check that the current user billing_company and order billing company match.
          $current_user = wp_get_current_user();
          $current_user_billing_company = get_user_meta( $current_user->ID, 'billing_company', true );
          $order   = wc_get_order( $args[2] );
				  if ( $order && $current_user_billing_company == $order->get_billing_company() ) {
					    $allcaps['view_order'] = true;
				  }
			break;
      }
    }

    return $allcaps;
}