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<?php |
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/** |
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* @package CleverStyle Framework |
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* @author Nazar Mokrynskyi <[email protected]> |
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* @copyright Copyright (c) 2015-2016, Nazar Mokrynskyi |
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* @license MIT License, see license.txt |
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*/ |
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namespace cs; |
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/** |
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* CRUD trait extended with useful additional methods, for example, for searching |
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* |
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* Might me used instead of regular CRUD trait |
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*/ |
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trait CRUD_helpers { |
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use |
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CRUD; |
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/** |
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* Generic search |
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* |
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* @param mixed[] $search_parameters Array in form [attribute => value];<br> |
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* Or [attribute => [value1, value2, value3]];<br> |
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* Or [attribute => [from => a, to => b]];<br> |
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* Or [attribute => [...]] in case of joined tables, where ... is any of three constructions mentioned above;<br> |
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* if `total_count => true` element is present - total number of found rows will be returned instead of rows themselves |
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* @param int $page |
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* @param int $count |
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* @param string $order_by |
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* @param bool $asc |
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* |
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* @return false|int|int[]|string[] Array of `id` or number of elements |
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*/ |
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protected function search ($search_parameters = [], $page = 1, $count = 100, $order_by = 'id', $asc = false) { |
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$joins = ''; |
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$join_params = []; |
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$join_index = 0; |
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$where = []; |
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$where_params = []; |
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foreach ($search_parameters as $key => $details) { |
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if (!isset($this->data_model[$key])) { |
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continue; |
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} |
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if (isset($this->data_model[$key]['data_model'])) { |
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$this->search_conditions_join_table('t', $key, $details, $joins, $join_params, $join_index); |
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} else { |
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$this->search_conditions('t', $key, $details, $where, $where_params); |
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} |
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} |
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return $this->search_do('t', @$search_parameters['total_count'], $where, $where_params, $joins, $join_params, $page, $count, $order_by, $asc); |
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} |
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/** |
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* @param string $table_alias |
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* @param bool $total_count |
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* @param string[] $where |
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* @param array $where_params |
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* @param string $joins |
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* @param array $join_params |
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* @param int $page |
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* @param int $count |
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* @param string $order_by |
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* @param bool $asc |
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* |
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* @return false|int|int[]|string[] |
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*/ |
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private function search_do ($table_alias, $total_count, $where, $where_params, $joins, $join_params, $page, $count, $order_by, $asc) { |
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$first_column = array_keys($this->data_model)[0]; |
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$where = $where ? 'WHERE '.implode(' AND ', $where) : ''; |
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if ($total_count) { |
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return (int)$this->db()->qfs( |
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"SELECT COUNT(`$table_alias`.`$first_column`) |
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FROM `$this->table` AS `$table_alias` |
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$joins |
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$where |
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GROUP BY `$table_alias`.`$first_column`", |
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array_merge($join_params, $where_params) |
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); |
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} |
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$where_params[] = $count; |
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$where_params[] = ($page - 1) * $count; |
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$order_by = $this->search_order_by($table_alias, $order_by, $joins, $join_index); |
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$asc = $asc ? 'ASC' : 'DESC'; |
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$return = $this->db()->qfas( |
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"SELECT `$table_alias`.`$first_column` |
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FROM `$this->table` AS `$table_alias` |
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$joins |
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$where |
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GROUP BY `$table_alias`.`$first_column`, $order_by |
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ORDER BY $order_by $asc |
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LIMIT %d OFFSET %d", |
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array_merge($join_params, $where_params) |
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); |
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return $this->read_field_post_processing($return, array_values($this->data_model)[0]); |
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} |
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/** |
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* @param string $table_alias |
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* @param string $key |
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* @param array $details |
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* @param string[] $where |
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* @param array $where_params |
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*/ |
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private function search_conditions ($table_alias, $key, $details, &$where, &$where_params) { |
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if (is_scalar($details)) { |
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$where[] = "`$table_alias`.`$key` = '%s'"; |
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$where_params[] = $details; |
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} elseif (is_array($details) && $details) { |
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if (is_array_indexed($details)) { |
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$where_tmp = []; |
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foreach ($details as $d) { |
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$where_tmp[] = "`$table_alias`.`$key` = '%s'"; |
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$where_params[] = $d; |
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} |
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$where[] = '('.implode(' OR ', $where_tmp).')'; |
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return; |
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} |
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if (isset($details['from'])) { |
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$where[] = "`$table_alias`.`$key` >= '%s'"; |
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$where_params[] = $details['from']; |
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} |
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if (isset($details['to'])) { |
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$where[] = "`$table_alias`.`$key` <= '%s'"; |
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$where_params[] = $details['to']; |
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} |
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} |
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} |
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/** |
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* @param string $table_alias |
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* @param string $table |
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* @param array|int|string $details |
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* @param string $joins |
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* @param array $join_params |
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* @param int $join_index |
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*/ |
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private function search_conditions_join_table ($table_alias, $table, $details, &$joins, &$join_params, &$join_index) { |
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$data_model = $this->data_model[$table]; |
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$first_column = array_keys($this->data_model)[0]; |
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$first_column_join = array_keys($data_model['data_model'])[0]; |
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if (is_scalar($details)) { |
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$details = [ |
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array_keys($data_model['data_model'])[1] => $details |
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]; |
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} |
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/** |
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* @var array $details |
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*/ |
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++$join_index; |
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$joins .= |
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"INNER JOIN `{$this->table}_$table` AS `j$join_index` |
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ON |
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`$table_alias`.`$first_column` = `j$join_index`.`$first_column_join`"; |
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$language_field = isset($data_model['language_field']) ? $data_model['language_field'] : false; |
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foreach ($details as $field => $value) { |
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if ($language_field === $field) { |
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continue; |
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} |
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$where_tmp = []; |
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$this->search_conditions("j$join_index", $field, $value, $where_tmp, $join_params); |
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$joins .= ' AND '.implode(' AND ', $where_tmp); |
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} |
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if ($language_field) { |
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/** @noinspection OffsetOperationsInspection */ |
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$clang = isset($details[$language_field]) ? $details[$language_field] : Language::instance()->clang; |
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$joins .= |
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" AND |
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( |
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`j$join_index`.`lang` = '$clang' OR |
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`j$join_index`.`lang` = '' |
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)"; |
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} |
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} |
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/** |
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* @param string $table_alias |
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* @param string $order_by |
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* @param string $joins |
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* @param int $join_index |
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* |
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* @return string |
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*/ |
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private function search_order_by ($table_alias, $order_by, &$joins, &$join_index) { |
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$order_by = explode(':', $order_by); |
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if (!isset($this->data_model[$order_by[0]])) { |
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/** |
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* Non-existing field |
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*/ |
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$order_by = ['id']; |
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} elseif (isset($order_by[1])) { |
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/** |
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* Non-existing field in joined table |
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*/ |
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if (!isset($this->data_model[$order_by[0]]['data_model'][$order_by[1]])) { |
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$order_by = ['id']; |
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} |
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} elseif (is_array($this->data_model[$order_by[0]]) && isset($this->data_model[$order_by[0]]['data_model'])) { |
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/** |
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* Default field in joined table |
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*/ |
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$order_by[1] = array_keys($this->data_model[$order_by[0]]['data_model'])[1]; |
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} |
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if (isset($order_by[1])) { |
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++$join_index; |
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$first_column = array_keys($this->data_model)[0]; |
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$first_column_join = array_keys($this->data_model[$order_by[0]]['data_model'])[0]; |
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$joins .= |
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"INNER JOIN `{$this->table}_$order_by[0]` AS `j$join_index` |
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ON |
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`$table_alias`.`$first_column` = `j$join_index`.`$first_column_join`"; |
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$order_by = "`j$join_index`.`$order_by[1]`"; |
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} else { |
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$order_by = "`$table_alias`.`$order_by[0]`"; |
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} |
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return $order_by; |
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} |
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} |
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nazar-pc /
CleverStyle-Framework
