Override functionalities in Woocommerce Reports section - wordpress

Question

I need to customize the Reports in WooCommerce, so I have to edit the core file class-wc-report-sales-by-date.php, such file doesn't use any hook.
Check this in WC source code: includes/admin/reports/class-wc-report-sales-by-date.php
I have to edit the 393 line, this variable: $this->report_data->total_sales
I need to customize the Total Sales amount to add it another value.
How can I override WooCommerce this core file?

Answer 1

Never override core files… There is other ways made for that. If you look at line 411, you have woocommerce_admin_report_data filter hook to make changes, this way (example):
add_filter( 'woocommerce_admin_report_data', 'custom_admin_report_data', 10, 1 );
function custom_admin_report_data( $report_data ){
// HERE you make your calculations and changes
// New amout to set (example)
$new_calculated_amount = 100;
// Set the new amounts for "total_sales" key
$report_data->total_sales = $new_calculated_amount;
// Raw data output just for testing, to get the keys and the structure of the data
// to be removed
echo '<pre>'; print_r($report_data); echo '</pre>';
// Return the changed data object
return $report_data;
}
Code goes in function.php file of your active child theme (or theme) or also in any plugin file.
Tested and works.
I have included a line of code that outputs the raw data that you should remove… It's just to see the data structure and the changes made by the function on the "total_sales" value…
The Raw data output is something like this (that gives you the data structure to better make changes):
stdClass Object
(
[order_counts] => Array
(
[0] => stdClass Object
(
[count] => 1
[post_date] => 2017-11-21 16:45:43
)
)
[coupons] => Array
(
)
[order_items] => Array
(
[0] => stdClass Object
(
[order_item_count] => 1
[post_date] => 2017-11-21 16:45:43
)
)
[refunded_order_items] => 0
[orders] => Array
(
[0] => stdClass Object
(
[total_sales] => 48
[total_shipping] => 15
[total_tax] => 5
[total_shipping_tax] => 3
[post_date] => 2017-11-21 16:45:43
)
)
[full_refunds] => Array
(
)
[partial_refunds] => Array
(
)
[refund_lines] => Array
(
)
[total_tax_refunded] => 0
[total_shipping_refunded] => 0
[total_shipping_tax_refunded] => 0
[total_refunds] => 0
[total_tax] => 5.00
[total_shipping] => 15.00
[total_shipping_tax] => 3.00
[total_sales] => 48.00
[net_sales] => 25.00
[average_sales] => 3.57
[average_total_sales] => 6.86
[total_coupons] => 0.00
[total_refunded_orders] => 0
[total_orders] => 1
[total_items] => 1
)
So as you can see you also need to make changes on the "orders" object data as you also have the "total_sales" key…