MongoDB\Database::selectGridFSBucket()

Definition

MongoDB\Database::selectGridFSBucket()

Selects a GridFS bucket within the database.

function selectGridFSBucket(array $options = []): MongoDB\GridFS\Bucket

Parameters

$options : array

An array specifying the desired options.

Name	Type	Description
bucketName	string	The bucket name, which will be used as a prefix for the files and chunks collections. Defaults to "fs".
chunkSizeBytes	integer	The chunk size in bytes. Defaults to 261120 (i.e. 255 KiB).
codec	MongoDB\Codec\DocumentCodec	The default codec to use for bucket methods that return a file document (e.g. MongoDB\GridFS\Bucket::find()). New in version 1.17.
disableMD5	boolean	Whether to disable automatic MD5 generation when storing files. Defaults to false. Only true will be supported in 2.0. New in version 1.4.
readConcern	MongoDB\Driver\ReadConcern	The default read concern to use for bucket operations. Defaults to the database's read concern.
readPreference	MongoDB\Driver\ReadPreference	The default read preference to use for bucket operations. Defaults to the database's read concern.
typeMap	array	The default type map to use for bucket operations. Defaults to the database's type map.
writeConcern	MongoDB\Driver\WriteConcern	The default write concern to use for bucket operations. Defaults to the database's write concern.

Return Values

A MongoDB\GridFS\Bucket object.

Errors/Exceptions

MongoDB\Exception\InvalidArgumentException for errors related to the parsing of parameters or options.

Behavior

The selected bucket inherits options such as read preference and type mapping from the Database object. Options may be overridden via the $options parameter.

Example

The following example selects the default fs.files bucket in the test database:

<?php
$db = (new MongoDB\Client)->test;
$bucket = $db->selectGridFSBucket();

The following example selects the custom images.files bucket in the test database with a custom read preference:

<?php
$db = (new MongoDB\Client)->test;
$imagesBucket = $db->selectGridFSBucket([
    'bucketName' => 'images',
    'readPreference' => new MongoDB\Driver\ReadPreference('primaryPreferred'),
]);

See Also

• MongoDB\GridFS\Bucket::__construct()