Update a document and return it


(PECL mongo >=1.3.0)

MongoCollection::findAndModifyUpdate a document and return it

Описание

public array MongoCollection::findAndModify ( array $query [, array $update [, array $fields [, array $options ]]] )

The findAndModify command atomically modifies and returns a single document. By default, the returned document does not include the modifications made on the update. To return the document with the modifications made on the update, use the new option.

Список параметров

query

The query criteria to search for.

update

The update criteria.

fields

Optionally only return these fields.

options

An array of options to apply, such as remove the match document from the DB and return it.

Option Описание
sort array Determines which document the operation will modify if the query selects multiple documents. findAndModify will modify the first document in the sort order specified by this argument.
remove boolean Optional if update field exists. When TRUE, removes the selected document. The default is FALSE.
update array Optional if remove field exists. Performs an update of the selected document.
new boolean Optional. When TRUE, returns the modified document rather than the original. The findAndModify method ignores the new option for remove operations. The default is FALSE.
upsert boolean Optional. Used in conjunction with the update field. When TRUE, the findAndModify command creates a new document if the query returns no documents. The default is false. In MongoDB 2.2, the findAndModify command returns NULL when upsert is TRUE.

Возвращаемые значения

Returns the original document, or the modified document when new is set.

Ошибки

Throws MongoResultException on failure.

Примеры

Пример #1 MongoCollection::findAndModify() example

<?php
$m 
= new Mongo;
$col $m->selectDB("test")->jobs;

$col->insert(array(
     
"name" => "Next promo",
     
"inprogress" => false,
     
"priority" => 0,
     
"tasks" => array( "select product""add inventory""do placement"),
) );

$col->insert(array(
     
"name" => "Biz report",
     
"inprogress" => false,
     
"priority" => 1,
     
"tasks" => array( "run sales report""email report" )
) );

$col->insert(array(
     
"name" => "Biz report",
     
"inprogress" => false,
     
"priority" => 2,
     
"tasks" => array( "run marketing report""email report" )
    ),
    array(
"w" => 1)
);



$retval $col->findAndModify(
     array(
"inprogress" => false"name" => "Biz report"),
     array(
'$set' => array('inprogress' => true"started" => new MongoDate())),
     
null,
     array(
        
"sort" => array("priority" => -1),
        
"new" => true,
    )
);

var_dump($retval);
?>

Результатом выполнения данного примера будет что-то подобное:

 array(6) {   ["_id"]=>   object(MongoId)#7 (1) {     ["$id"]=>     string(24) "5091b5b244415e8cc3000002"   }   ["inprogress"]=>   bool(true)   ["name"]=>   string(10) "Biz report"   ["priority"]=>   int(2)   ["started"]=>   object(MongoDate)#8 (2) {     ["sec"]=>     int(1351726514)     ["usec"]=>     int(925000)   }   ["tasks"]=>   array(2) {     [0]=>     string(20) "run marketing report"     [1]=>     string(12) "email report"   } } 

Пример #2 MongoCollection::findAndModify() error handling

<?php
$m 
= new Mongo;
$col $m->selectDB("test")->jobs;
try {
    
$retval $col->findAndModify(
         array(
"inprogress" => false"name" => "Next promo"),
         array(
'$pop' => array("tasks" => -1)),
         array(
"tasks" => array('$pop' => array("stuff"))),
         array(
"new" => true)
    );
} catch(
MongoResultException $e) {
    echo 
$e->getCode(), " : "$e->getMessage(), "\n";
    
var_dump($e->getDocument());
}

?>

Результатом выполнения данного примера будет что-то подобное:

 13097 : exception: Unsupported projection option: $pop array(3) {   ["errmsg"]=>   string(46) "exception: Unsupported projection option: $pop"   ["code"]=>   int(13097)   ["ok"]=>   float(0) } 

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