Use MongoDB with Symfony 4

Question

I've a some little problems with Symfony 4 and MongoDB Atlas (cloud cluster... but in local i think it's the same). I'm on Windows 10 pro with php 7.1.1.

Based on this article

http://php.net/manual/en/mongodb.tutorial.library.php

this is the code inside my admin controller

 $mongo = new MongoClient();
        $dbs = $mongo->listDBs();
        print_r($dbs);

i receive this error

Attempted to load class "MongoClient" from namespace "App\Controller\Admin".
Did you forget a "use" statement for "MongoClient"?

but: my extension is loaded correctly.

MongoDb ext. phpinfo() output

mongodb
MongoDB support enabled
MongoDB extension version   1.3.4
MongoDB extension stability     stable
libbson bundled version     1.8.2
libmongoc bundled version   1.8.2
libmongoc SSL   enabled
libmongoc SSL library   OpenSSL
libmongoc crypto    enabled
libmongoc crypto library    libcrypto
libmongoc crypto system profile     disabled
libmongoc SASL  enabled
Directive   Local Value Master Value
mongodb.debug   no value

composer.json

"alcaeus/mongo-php-adapter": "^1.1",
"doctrine/mongodb": "^1.6",
"doctrine/mongodb-odm": "^1.2",
"doctrine/mongodb-odm-bundle": "^3.4",
"mongodb/mongodb": "^1.2",

Composer Version

1.6

I also use mongodb-odm-bundle. This work fine, but i'd like to use also official legacy mongodb lib in my projects (connection with cluster it's ok). But when i try to use MongoClient() i get this error...

so, which "use statement" i must to use?

flexicon · Accepted Answer · 2018-01-28 19:20:18Z

1

The correct configuration for Symfony 4 + Mongodb Atlas

1) composer require mongodb/mongodb (nothing else)

CONTROLLER

namespace App\Controller\your_controller;

INCLUDE LIBRARY

use MongoDB;

CONNECTION (for example get the databases list)

$connection = 'mongodb://___full_URI_MongoDBAtlas___';
$client = new MongoDB\Client($connection);
$dbs = $client->listDatabases();
var_dump($dbs);

answered Jan 28, 2018 at 19:20

flexicon

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Comments

Michael Hirschler · Accepted Answer · 2018-01-26 07:32:25Z

0

The Clients class name (I think you meant mongodb/mongodb, not from doctrine/mongodb) is: \MongoDB\Client.

So updating your code should do the trick:

$mongo = new \MongoDB\Client();
$dbs = $mongo->listDBs();
print_r($dbs);

answered Jan 26, 2018 at 7:32

Michael Hirschler

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7 Comments

flexicon Over a year ago

hi michael. With "\" in \MongoDB give an error. without not. $mongo = new MongoDB\Client(); i think it's correct. but executing this line output is a white page (not error). No listdb given... Yes: i mean mongodb/mongodb...

flexicon Over a year ago

i'd like to use connection setuo that i use in .env (like in mongoOdmBundle), without repeating anytime the string connection. Something like this $dm = $this->get('doctrine_mongodb')->getManager(); where doctrine_mongodb is my symfony connection setup

Michael Hirschler Over a year ago

Which error? Blank page indicates a (silenced) Fatal Error (class not found?).

flexicon Over a year ago

with $mongo = new MongoDB\Client() it's ok. the problem now is another. With $dbs = $mongo->listDatabases(); no results. i read this php.net/manual/en/mongodb.tutorial.library.php

Michael Hirschler Over a year ago

Ahh okay, you should be able to ask your manager to get the Mongo connection like this: $this->get('doctrine_mongodb')->getManager()->getConnection()->getMongo();

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