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| 1 | <?php |
| 2 | /** |
| 3 | * @file |
| 4 | * @ingroup Cargo |
| 5 | */ |
| 6 | |
| 7 | /** |
| 8 | * Adds the 'cargoautocomplete' action to the MediaWiki API. |
| 9 | * |
| 10 | * @ingroup Cargo |
| 11 | * |
| 12 | * @author Yaron Koren |
| 13 | */ |
| 14 | class CargoAutocompleteAPI extends ApiBase { |
| 15 | |
| 16 | public function __construct( $query, $moduleName ) { |
| 17 | parent::__construct( $query, $moduleName ); |
| 18 | } |
| 19 | |
| 20 | public function execute() { |
| 21 | $params = $this->extractRequestParams(); |
| 22 | $substr = $params['substr']; |
| 23 | $table = $params['table']; |
| 24 | $field = $params['field']; |
| 25 | $where = $params['where']; |
| 26 | |
| 27 | $data = self::getAllValues( $table, $field, $where, $substr ); |
| 28 | |
| 29 | // If we got back an error message, exit with that message. |
| 30 | if ( !is_array( $data ) ) { |
| 31 | if ( !$data instanceof Message ) { |
| 32 | $data = ApiMessage::create( new RawMessage( '$1', [ $data ] ), 'unknownerror' ); |
| 33 | } |
| 34 | $this->dieWithError( $data ); |
| 35 | } |
| 36 | |
| 37 | // Set top-level elements. |
| 38 | $result = $this->getResult(); |
| 39 | $result->setIndexedTagName( $data, 'p' ); |
| 40 | $result->addValue( null, $this->getModuleName(), $data ); |
| 41 | } |
| 42 | |
| 43 | protected function getAllowedParams() { |
| 44 | return [ |
| 45 | 'limit' => [ |
| 46 | ApiBase::PARAM_TYPE => 'limit', |
| 47 | ApiBase::PARAM_DFLT => 10, |
| 48 | ApiBase::PARAM_MIN => 1, |
| 49 | ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1, |
| 50 | ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2 |
| 51 | ], |
| 52 | 'substr' => null, |
| 53 | 'table' => null, |
| 54 | 'field' => null, |
| 55 | 'where' => null, |
| 56 | ]; |
| 57 | } |
| 58 | |
| 59 | protected function getParamDescription() { |
| 60 | return [ |
| 61 | 'substr' => 'Search substring', |
| 62 | 'table' => 'Cargo table for which to search values', |
| 63 | 'field' => 'Cargo field for which to search values', |
| 64 | 'where' => 'The "where" clause for the query, based on the other filters specified', |
| 65 | ]; |
| 66 | } |
| 67 | |
| 68 | protected function getDescription() { |
| 69 | return 'Autocompletion call used by Special:Drilldown, defined by the Cargo extension (https://www.mediawiki.org/Extension:Cargo)'; |
| 70 | } |
| 71 | |
| 72 | protected function getExamples() { |
| 73 | return [ |
| 74 | 'api.php?action=cargoautocomplete&table=Books&field=Author&substr=jo', |
| 75 | 'api.php?action=cargoautocomplete&table=Books&field=Author&where=Genre=comedy+AND+Year_published=1986&substr=jo', |
| 76 | ]; |
| 77 | } |
| 78 | |
| 79 | private static function getAllValues( $table, $field, $where, $substr ) { |
| 80 | $values = []; |
| 81 | |
| 82 | if ( $substr !== null ) { |
| 83 | if ( $where != '' ) { |
| 84 | $where .= " AND "; |
| 85 | } |
| 86 | // There's no such global variable at the moment - |
| 87 | // perhaps there will be in the future. |
| 88 | // if ( $wgCargoDrilldownAutocompleteOnAllChars ) { |
| 89 | // $where .= "($field LIKE \"%$substr%\")"; |
| 90 | // } else { |
| 91 | $where .= "($field LIKE \"$substr%\" OR $field LIKE \"% $substr%\")"; |
| 92 | // } |
| 93 | } |
| 94 | |
| 95 | $sqlQuery = CargoSQLQuery::newFromValues( |
| 96 | $table, |
| 97 | $field, |
| 98 | $where, |
| 99 | $joinOn = null, |
| 100 | $field, |
| 101 | $having = null, |
| 102 | $field, |
| 103 | 20, |
| 104 | $offset = null |
| 105 | ); |
| 106 | if ( $field[0] != '_' ) { |
| 107 | $fieldAlias = str_replace( '_', ' ', $field ); |
| 108 | } else { |
| 109 | $fieldAlias = $field; |
| 110 | } |
| 111 | $queryResults = $sqlQuery->run(); |
| 112 | |
| 113 | foreach ( $queryResults as $row ) { |
| 114 | // @TODO - this check should not be necessary. |
| 115 | $value = $row[$fieldAlias]; |
| 116 | if ( $value != '' ) { |
| 117 | $values[] = $value; |
| 118 | } |
| 119 | } |
| 120 | |
| 121 | return $values; |
| 122 | } |
| 123 | |
| 124 | } |