Add per request in memory caching of country objects to improve perfo…

…rmance

src/Helpers/CountryHelper.php

@@ -0,0 +1,26 @@
+<?php
+
+
+namespace DivineOmega\LaravelAddresses\Helpers;
+
+
+use DivineOmega\Countries\Countries;
+use DivineOmega\Countries\Country;
+
+abstract class CountryHelper
+{
+    static $countriesByCode = [];
+
+    static function getByIsoCode($countryCode): ?Country
+    {
+        if (array_key_exists($countryCode, self::$countriesByCode)) {
+            return self::$countriesByCode[$countryCode];
+        }
+
+        $country = (new Countries())->getByIsoCode($countryCode);
+
+        self::$countriesByCode[$countryCode] = $country;
+
+        return $country;
+    }
+}

src/Models/Address.php

@@ -7,6 +7,7 @@
 use DivineOmega\LaravelAddresses\DistanceStrategies\Direct;
 use DivineOmega\LaravelAddresses\Exceptions\InvalidCountryException;
 use DivineOmega\LaravelAddresses\Exceptions\InvalidUKPostcodeException;
+use DivineOmega\LaravelAddresses\Helpers\CountryHelper;
 use DivineOmega\LaravelAddresses\Helpers\GoogleMaps;
 use DivineOmega\LaravelAddresses\Interfaces\DistanceStrategyInterface;
 use DivineOmega\LaravelAddresses\Objects\Location;
@@ -50,7 +51,7 @@ public function getCountryAttribute(): ?Country
             return null;
         }
 
-        return (new Countries())->getByIsoCode($this->country_code);
+        return CountryHelper::getByIsoCode($this->country_code);
     }
 
     public function getCountryNameAttribute(): ?string