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Merge pull request #10769 from woothemes/Tax-rate-matching-logic 

Tax rate matching logic
This commit is contained in:
Mike Jolley 2016-04-22 17:07:20 +01:00
parent a570e36c55 9fb5fa9efd
commit 87d40ac8ba
3 changed files with 122 additions and 154 deletions
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61
includes/class-wc-shipping-zones.php
View File

@ -111,29 +111,6 @@ class WC_Shipping_Zones {
$zone->delete();
}
/**
* Get postcode wildcards in array format.
*
* Internal use only.
*
* @since 2.6.0
* @access private
*
* @param string $postcode array of values
* @return string[] Array of postcodes with wildcards
*/
private static function _get_wildcard_postcodes( $postcode ) {
$postcodes = array( '*', strtoupper( $postcode ), strtoupper( $postcode ) . '*' );
$postcode_length = strlen( $postcode );
$wildcard_postcode = strtoupper( $postcode );
for ( $i = 0; $i < $postcode_length; $i ++ ) {
$wildcard_postcode = substr( $wildcard_postcode, 0, -1 );
$postcodes[] = $wildcard_postcode . '*';
}
return $postcodes;
}
/**
* Find a matching zone for a given package.
* @since 2.6.0
@ -148,7 +125,6 @@ class WC_Shipping_Zones {
$state = strtoupper( wc_clean( $package['destination']['state'] ) );
$continent = strtoupper( wc_clean( WC()->countries->get_continent_code_for_country( $country ) ) );
$postcode = strtoupper( wc_clean( $package['destination']['postcode'] ) );
$valid_postcodes = array_map( 'wc_clean', self::_get_wildcard_postcodes( $postcode ) );
$cache_key = WC_Cache_Helper::get_cache_prefix( 'shipping_zones' ) . 'wc_shipping_zone_' . md5( sprintf( '%s+%s+%s', $country, $state, $postcode ) );
$matching_zone_id = wp_cache_get( $cache_key, 'shipping_zones' );
@ -165,41 +141,8 @@ class WC_Shipping_Zones {
if ( $postcode_locations ) {
$zone_ids_with_postcode_rules = array_map( 'absint', wp_list_pluck( $postcode_locations, 'zone_id' ) );
$zone_id_matches = array();
foreach ( $postcode_locations as $postcode_location ) {
$postcode_to_match = trim( strtoupper( $postcode_location->location_code ) );
// Ranges
if ( strstr( '-', $postcode_to_match ) ) {
$range = array_map( 'trim', explode( '-', $postcode_to_match ) );
if ( sizeof( $range ) != 2 ) {
continue;
}
if ( is_numeric( $range[0] ) && is_numeric( $range[1] ) ) {
$encoded_postcode = $postcode;
$min = $range[0];
$max = $range[1];
} else {
$min = wc_make_numeric_postcode( $range[0] );
$max = wc_make_numeric_postcode( $range[1] );
$min = str_pad( $min, $encoded_postcode_len, '0' );
$max = str_pad( $max, $encoded_postcode_len, '9' );
}
if ( $encoded_postcode >= $min && $encoded_postcode <= $max ) {
$zone_id_matches[] = absint( $postcode_location->zone_id );
}
// Wildcard/standard
} elseif ( in_array( $postcode_to_match, $valid_postcodes ) ) {
$zone_id_matches[] = absint( $postcode_location->zone_id );
}
}
$do_not_match = array_unique( array_diff( $zone_ids_with_postcode_rules, $zone_id_matches ) );
$matches = wc_postcode_location_matcher( $postcode, $postcode_locations, 'zone_id', 'location_code' );
$do_not_match = array_unique( array_diff( $zone_ids_with_postcode_rules, array_keys( $zone_id_matches ) ) );
if ( $do_not_match ) {
$criteria[] = "AND zones.zone_id NOT IN (" . implode( ',', $do_not_match ) . ")";

139
includes/class-wc-tax.php
View File

@ -234,12 +234,11 @@ class WC_Tax {
}
$postcode = wc_clean( $postcode );
$valid_postcodes = self::_get_wildcard_postcodes( $postcode );
$cache_key = WC_Cache_Helper::get_cache_prefix( 'taxes' ) . 'wc_tax_rates_' . md5( sprintf( '%s+%s+%s+%s+%s', $country, $state, $city, $postcode, $tax_class ) );
$matched_tax_rates = wp_cache_get( $cache_key, 'taxes' );
if ( false === $matched_tax_rates ) {
$matched_tax_rates = self::get_matched_tax_rates( $country, $state, $postcode, $city, $tax_class, $valid_postcodes );
$matched_tax_rates = self::get_matched_tax_rates( $country, $state, $postcode, $city, $tax_class );
wp_cache_set( $cache_key, $matched_tax_rates, 'taxes' );
}
@ -275,49 +274,63 @@ class WC_Tax {
* @param string $postcode
* @param string $city
* @param string $tax_class
* @param string[] $valid_postcodes
* @return array
*/
private static function get_matched_tax_rates( $country, $state, $postcode, $city, $tax_class, $valid_postcodes ) {
private static function get_matched_tax_rates( $country, $state, $postcode, $city, $tax_class ) {
global $wpdb;
$valid_postcodes = array_map( 'esc_sql', array_map( 'wc_clean', $valid_postcodes ) );
$match_country = esc_sql( strtoupper( wc_clean( $country ) ) );
$match_state = esc_sql( strtoupper( wc_clean( $state ) ) );
$match_tax_class = esc_sql( sanitize_title( $tax_class ) );
$match_city = esc_sql( strtoupper( wc_clean( $city ) ) );
// Query criteria - these will be ANDed
$criteria = array();
$criteria[] = $wpdb->prepare( "tax_rate_country IN ( %s, '' )", strtoupper( $country ) );
$criteria[] = $wpdb->prepare( "tax_rate_state IN ( %s, '' )", strtoupper( $state ) );
$criteria[] = $wpdb->prepare( "tax_rate_class = %s", sanitize_title( $tax_class ) );
// Pre-query postcode ranges for PHP based matching.
$postcode_search = wc_get_wildcard_postcodes( $postcode );
$postcode_ranges = $wpdb->get_results( "SELECT tax_rate_id, location_code FROM {$wpdb->prefix}woocommerce_tax_rate_locations WHERE location_type = 'postcode' AND location_code LIKE '%-%';" );
if ( $postcode_ranges ) {
$matches = wc_postcode_location_matcher( $postcode, $postcode_ranges, 'tax_rate_id', 'location_code' );
$postcode_search = array_unique( array_merge( $postcode_search, array_values( $matches ) ) );
}
/**
* Location matching criteria - ORed
* Needs to match:
* - rates with no postcodes and cities
* - rates with a matching postcode and city
* - rates with matching postcode, no city
* - rates with matching city, no postcode
*/
$locations_criteria = array();
$locations_criteria[] = "locations.location_type IS NULL";
$locations_criteria[] = "
locations.location_type = 'postcode' AND locations.location_code IN ('" . implode( "','", array_map( 'esc_sql', $postcode_search ) ) . "')
AND (
( locations2.location_type = 'city' AND locations2.location_code = '" . esc_sql( strtoupper( $city ) ) . "' )
OR NOT EXISTS (
SELECT sub.tax_rate_id FROM {$wpdb->prefix}woocommerce_tax_rate_locations as sub
WHERE sub.location_type = 'city'
AND sub.tax_rate_id = tax_rates.tax_rate_id
)
)
";
$locations_criteria[] = "
locations.location_type = 'city' AND locations.location_code = '" . esc_sql( strtoupper( $city ) ) . "'
AND NOT EXISTS (
SELECT sub.tax_rate_id FROM {$wpdb->prefix}woocommerce_tax_rate_locations as sub
WHERE sub.location_type = 'postcode'
AND sub.tax_rate_id = tax_rates.tax_rate_id
)
";
$criteria[] = '( ( ' . implode( ' ) OR ( ', $locations_criteria ) . ' ) )';
$found_rates = $wpdb->get_results( "
SELECT tax_rates.*
FROM {$wpdb->prefix}woocommerce_tax_rates as tax_rates
LEFT OUTER JOIN {$wpdb->prefix}woocommerce_tax_rate_locations as locations ON tax_rates.tax_rate_id = locations.tax_rate_id
LEFT OUTER JOIN {$wpdb->prefix}woocommerce_tax_rate_locations as locations2 ON tax_rates.tax_rate_id = locations2.tax_rate_id
WHERE tax_rate_country IN ( '{$match_country}', '' )
AND tax_rate_state IN ( '{$match_state}', '' )
AND tax_rate_class = '{$match_tax_class}'
AND (
locations.location_type IS NULL
OR (
locations.location_type = 'postcode'
AND locations.location_code IN ('" . implode( "','", $valid_postcodes ) . "')
AND (
locations2.location_type = 'city' AND locations2.location_code = '{$match_city}'
OR 0 = (
SELECT COUNT(*) FROM {$wpdb->prefix}woocommerce_tax_rate_locations as sublocations
WHERE sublocations.location_type = 'city'
AND sublocations.tax_rate_id = tax_rates.tax_rate_id
)
)
)
OR (
locations.location_type = 'city'
AND locations.location_code = '{$match_city}'
AND 0 = (
SELECT COUNT(*) FROM {$wpdb->prefix}woocommerce_tax_rate_locations as sublocations
WHERE sublocations.location_type = 'postcode'
AND sublocations.tax_rate_id = tax_rates.tax_rate_id
)
)
)
WHERE 1=1 AND " . implode( ' AND ', $criteria ) . "
GROUP BY tax_rate_id
ORDER BY tax_rate_priority, tax_rate_order
" );
@ -809,7 +822,6 @@ class WC_Tax {
$postcodes = explode( ';', $postcodes );
}
$postcodes = array_filter( array_diff( array_map( array( __CLASS__, 'format_tax_rate_postcode' ), $postcodes ), array( '*' ) ) );
$postcodes = self::_get_expanded_numeric_ranges_from_array( $postcodes );
self::_update_tax_rate_locations( $tax_rate_id, $postcodes, 'postcode' );
}
@ -870,59 +882,6 @@ class WC_Tax {
WC_Cache_Helper::incr_cache_prefix( 'taxes' );
}
/**
* Expands ranges in an array (used for zipcodes). e.g. 101-105 would expand to 101, 102, 103, 104, 105.
*
* Internal use only.
*
* @since 2.3.0
* @access private
*
* @param array $values array of values
* @return array expanded values
*/
private static function _get_expanded_numeric_ranges_from_array( $values = array() ) {
$expanded = array();
foreach ( $values as $value ) {
if ( strstr( $value, '-' ) ) {
$parts = array_map( 'absint', array_map( 'trim', explode( '-', $value ) ) );
for ( $expanded_value = $parts[0]; $expanded_value <= $parts[1]; $expanded_value ++ ) {
if ( strlen( $expanded_value ) < strlen( $parts[0] ) ) {
$expanded_value = str_pad( $expanded_value, strlen( $parts[0] ), "0", STR_PAD_LEFT );
}
$expanded[] = $expanded_value;
}
} else {
$expanded[] = trim( $value );
}
}
return array_filter( $expanded );
}
/**
* Get postcode wildcards in array format.
*
* Internal use only.
*
* @since 2.3.0
* @access private
*
* @param string $postcode array of values
* @return string[] Array of postcodes with wildcards
*/
private static function _get_wildcard_postcodes( $postcode ) {
$postcodes = array( '*', strtoupper( $postcode ), strtoupper( $postcode ) . '*' );
$postcode_length = strlen( $postcode );
$wildcard_postcode = strtoupper( $postcode );
for ( $i = 0; $i < $postcode_length; $i ++ ) {
$wildcard_postcode = substr( $wildcard_postcode, 0, -1 );
$postcodes[] = $wildcard_postcode . '*';
}
return $postcodes;
}
/**
* Used by admin settings page.
*

66
includes/wc-core-functions.php
View File

@ -1223,3 +1223,69 @@ function wc_help_tip( $tip, $allow_html = false ) {
return '<span class="woocommerce-help-tip" data-tip="' . $tip . '"></span>';
}
/**
* Return a list of potential postcodes for wildcard searching.
* @since 2.6.0
* @param string $postcode
* @return array
*/
function wc_get_wildcard_postcodes( $postcode ) {
$postcodes = array( '*', strtoupper( $postcode ), strtoupper( $postcode ) . '*' );
$postcode_length = strlen( $postcode );
$wildcard_postcode = strtoupper( $postcode );
for ( $i = 0; $i < $postcode_length; $i ++ ) {
$wildcard_postcode = substr( $wildcard_postcode, 0, -1 );
$postcodes[] = $wildcard_postcode . '*';
}
return $postcodes;
}
/**
* Used by shipping zones and taxes to compare a given $postcode to stored
* postcodes to find matches for numerical ranges, and wildcards.
* @since 2.6.0
* @param string $postcode Postcode you want to match against stored postcodes
* @param array $objects Array of postcode objects from Database
* @param string $object_compare_key DB column name for the ID.
* @param string $object_compare_key DB column name for the value.
* @return array Array of matching object ID and values.
*/
function wc_postcode_location_matcher( $postcode, $objects, $object_id_key, $object_compare_key ) {
$matches = array();
$wildcard_postcodes = array_map( 'wc_clean', wc_get_wildcard_postcodes( $postcode ) );
$postcodes = wp_list_pluck( $objects, $object_compare_key, $object_id_key );
foreach ( $postcodes as $object_id => $compare_against ) {
$compare = $postcode;
// Handle postcodes containing ranges
if ( strstr( $compare_against, '-' ) ) {
$range = array_map( 'trim', explode( '-', $compare_against ) );
if ( 2 !== sizeof( $range ) ) {
continue;
}
list( $min, $max ) = $range;
// If the postcode is non-numeric, make it numeric
if ( ! is_numeric( $min ) || ! is_numeric( $max ) ) {
$compare = wc_make_numeric_postcode( $compare );
$min = str_pad( wc_make_numeric_postcode( $min ), strlen( $encoded_postcode ), '0' );
$max = str_pad( wc_make_numeric_postcode( $max ), strlen( $encoded_postcode ), '0' );
}
if ( $compare >= $min && $compare <= $max ) {
$matches[ $object_id ] = $compare_against;
}
// Wildcard and standard comparison
} elseif ( in_array( $compare_against, $wildcard_postcodes ) ) {
$matches[ $object_id ] = $compare_against;
}
}
return $matches;
}