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<?php |
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/** |
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* Finance module for HiPanel |
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* |
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* @link https://github.com/hiqdev/hipanel-module-finance |
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* @package hipanel-module-finance |
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* @license BSD-3-Clause |
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* @copyright Copyright (c) 2015-2019, HiQDev (http://hiqdev.com/) |
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*/ |
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namespace hipanel\modules\finance\helpers; |
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use hipanel\helpers\ArrayHelper; |
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use hipanel\helpers\StringHelper; |
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use hipanel\modules\finance\models\Bill; |
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use Yii; |
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/** |
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* Class CurrencyFilter can be used to filter currencies array in finance module |
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*/ |
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class CurrencyFilter |
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{ |
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/** |
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* Adds currency symbols to each of element and filters it |
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* @param string[] $currencies Need to filter currencies list |
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* @return string[] Filtered currencies list with symbols |
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*/ |
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public static function addSymbolAndFilter(array $currencies): array |
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{ |
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$currencies = array_combine(array_keys($currencies), array_map(function (string $k) { |
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return StringHelper::getCurrencySymbol($k); |
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}, array_keys($currencies))); |
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return static::getUsedCurrencies($currencies); |
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} |
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/** |
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* Filters input array of currencies |
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* @param string[] $currencies |
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* @return string[] |
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*/ |
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private static function getUsedCurrencies(array $currencies): array |
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{ |
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$filterCurrencies = Yii::$app->cache->getOrSet([__METHOD__, Yii::$app->user->id], function () { |
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return ArrayHelper::getColumn(Bill::perform('get-used-currencies', [], ['batch' => true]), 'name'); |
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}, 3600); |
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return array_filter($currencies, function (string $cur) use ($filterCurrencies) { |
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return in_array($cur, $filterCurrencies); |
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}, ARRAY_FILTER_USE_KEY); |
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} |
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} |
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Let’s assume you have a class which uses late-static binding:
}
The code above will run fine in your PHP runtime. However, if you now create a sub-class and call the
getSomeVariable()
on that sub-class, you will receive a runtime error:In the case above, it makes sense to update
SomeClass
to useself
instead: