<?php
 class ent_quantity_unit { public $data; public $previous; public function __construct($quantity_unit_id=null) { if ($quantity_unit_id !== null) { $this->load($quantity_unit_id); } else { $this->reset(); } } public function reset() { $this->data = []; $fields_query = database::query( "show fields from ". DB_TABLE_PREFIX ."quantity_units;" ); while ($field = database::fetch($fields_query)) { $this->data[$field['Field']] = database::create_variable($field); } $info_fields_query = database::query( "show fields from ". DB_TABLE_PREFIX ."quantity_units_info;" ); while ($field = database::fetch($info_fields_query)) { if (in_array($field['Field'], ['id', 'quantity_unit_id', 'language_code'])) continue; $this->data[$field['Field']] = []; foreach (array_keys(language::$languages) as $language_code) { $this->data[$field['Field']][$language_code] = database::create_variable($field); } } $this->previous = $this->data; } public function load($quantity_unit_id) { if (!preg_match('#^[0-9]+$#', $quantity_unit_id)) throw new Exception('Invalid quantity unit (ID: '. $quantity_unit_id .')'); $this->reset(); $quantity_unit_query = database::query( "select * from ". DB_TABLE_PREFIX ."quantity_units
        where id = ". (int)$quantity_unit_id ."
        limit 1;" ); if ($quantity_unit = database::fetch($quantity_unit_query)) { $this->data = array_replace($this->data, array_intersect_key($quantity_unit, $this->data)); } else { throw new Exception('Could not find quantity unit (ID: '. (int)$quantity_unit_id .') in database.'); } $quantity_unit_info_query = database::query( "select * from ". DB_TABLE_PREFIX ."quantity_units_info
        where quantity_unit_id = ". (int)$this->data['id'] .";" ); while ($quantity_unit_info = database::fetch($quantity_unit_info_query)) { foreach ($quantity_unit_info as $key => $value) { if (in_array($key, ['id', 'quantity_unit_id', 'language_code'])) continue; $this->data[$key][$quantity_unit_info['language_code']] = $value; } } $this->previous = $this->data; } public function save() { if (empty($this->data['id'])) { database::query( "insert into ". DB_TABLE_PREFIX ."quantity_units
          (date_created)
          values ('". ($this->data['date_created'] = date('Y-m-d H:i:s')) ."');" ); $this->data['id'] = database::insert_id(); } database::query( "update ". DB_TABLE_PREFIX ."quantity_units
        set decimals = ". (int)$this->data['decimals'] .",
            separate = ". (int)$this->data['separate'] .",
            priority = ". (int)$this->data['priority'] .",
            date_updated = '". ($this->data['date_updated'] = date('Y-m-d H:i:s')) ."'
        where id = ". (int)$this->data['id'] ."
        limit 1;" ); foreach (array_keys(language::$languages) as $language_code) { $quantity_unit_info_query = database::query( "select * from ". DB_TABLE_PREFIX ."quantity_units_info
          where quantity_unit_id = ". (int)$this->data['id'] ."
          and language_code = '". database::input($language_code) ."'
          limit 1;" ); if (!$quantity_unit_info = database::fetch($quantity_unit_info_query)) { database::query( "insert into ". DB_TABLE_PREFIX ."quantity_units_info
            (quantity_unit_id, language_code)
            values (". (int)$this->data['id'] .", '". database::input($language_code) ."');" ); $quantity_unit_info['id'] = database::insert_id(); } database::query( "update ". DB_TABLE_PREFIX ."quantity_units_info
          set
            name = '". database::input($this->data['name'][$language_code]) ."',
            description = '". database::input($this->data['description'][$language_code]) ."'
          where id = ". (int)$quantity_unit_info['id'] ."
          and quantity_unit_id = ". (int)$this->data['id'] ."
          and language_code = '". database::input($language_code) ."'
          limit 1;" ); } $this->previous = $this->data; cache::clear_cache('quantity_units'); } public function delete() { if (database::num_rows(database::query("select id from ". DB_TABLE_PREFIX ."products where quantity_unit_id = ". (int)$this->data['id'] ." limit 1;"))) { throw new Exception('Cannot delete the quantity unit because there are products using it'); } database::query( "delete from ". DB_TABLE_PREFIX ."quantity_units_info
        where quantity_unit_id = ". (int)$this->data['id'] .";" ); database::query( "delete from ". DB_TABLE_PREFIX ."quantity_units
        where id = ". (int)$this->data['id'] ."
        limit 1;" ); $this->reset(); cache::clear_cache('quantity_units'); } } 