Magento 2 : Listing component amount formatting

Formatting amount column with currency symbol

The prices column can be be formatted to two decimal and currency symbol

Following example shows how to add formatting for a amount column.

/**
     * Prepare Data Source
     *
     * @param array $dataSource
     * @return array
     */
    public function prepareDataSource(array $dataSource)
    {
        if (isset($dataSource['data']['items'])) {
            foreach ($dataSource['data']['items'] as & $item) {
                $currencyCode = null;
                if (!$currencyCode) {
                    $store = $this->storeManager->getStore(
                        $this->context->getFilterParam('store_id', \Magento\Store\Model\Store::DEFAULT_STORE_ID)
                    );
                    $currencyCode = $store->getBaseCurrency()->getCurrencyCode();
                }
                $basePurchaseCurrency = $this->currency->load($currencyCode);
                $item[$this->getData('name')] = $basePurchaseCurrency
                    ->format($item[$this->getData('name')], [], false);
            }
        }

        return $dataSource;
    }