admin/model/localisation/currency.php

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<?php
class ModelLocalisationCurrency extends Model {
	public function addCurrency($data) {
		$this->db->query("INSERT INTO " . DB_PREFIX . "currency SET title = '" . $this->db->escape((string)$data['title']) . "', code = '" . $this->db->escape((string)$data['code']) . "', symbol_left = '" . $this->db->escape((string)$data['symbol_left']) . "', symbol_right = '" . $this->db->escape((string)$data['symbol_right']) . "', decimal_place = '" . $this->db->escape((string)$data['decimal_place']) . "', value = '" . (float)$data['value'] . "', status = '" . (int)$data['status'] . "', date_modified = NOW()");

		$currency_id = $this->db->getLastId();

		$this->cache->delete('currency');
		
		return $currency_id;
	}

	public function editCurrency($currency_id, $data) {
		$this->db->query("UPDATE " . DB_PREFIX . "currency SET title = '" . $this->db->escape((string)$data['title']) . "', code = '" . $this->db->escape((string)$data['code']) . "', symbol_left = '" . $this->db->escape((string)$data['symbol_left']) . "', symbol_right = '" . $this->db->escape((string)$data['symbol_right']) . "', decimal_place = '" . $this->db->escape((string)$data['decimal_place']) . "', value = '" . (float)$data['value'] . "', status = '" . (int)$data['status'] . "', date_modified = NOW() WHERE currency_id = '" . (int)$currency_id . "'");

		$this->cache->delete('currency');
	}

	public function editValueByCode($code, $value) {
		$this->db->query("UPDATE " . DB_PREFIX . "currency SET value = '" . (float)$value . "', date_modified = NOW() WHERE code = '" . $this->db->escape((string)$code) . "'");

		$this->cache->delete('currency');
	}

	public function deleteCurrency($currency_id) {
		$this->db->query("DELETE FROM " . DB_PREFIX . "currency WHERE currency_id = '" . (int)$currency_id . "'");

		$this->cache->delete('currency');
	}

	public function getCurrency($currency_id) {
		$query = $this->db->query("SELECT DISTINCT * FROM " . DB_PREFIX . "currency WHERE currency_id = '" . (int)$currency_id . "'");

		return $query->row;
	}

	public function getCurrencyByCode($currency) {
		$query = $this->db->query("SELECT DISTINCT * FROM " . DB_PREFIX . "currency WHERE code = '" . $this->db->escape($currency) . "'");

		return $query->row;
	}

	public function getCurrencies($data = array()) {
		if ($data) {
			$sql = "SELECT * FROM " . DB_PREFIX . "currency";

			$sort_data = array(
				'title',
				'code',
				'value',
				'date_modified'
			);

			if (isset($data['sort']) && in_array($data['sort'], $sort_data)) {
				$sql .= " ORDER BY " . $data['sort'];
			} else {
				$sql .= " ORDER BY title";
			}

			if (isset($data['order']) && ($data['order'] == 'DESC')) {