Edit
Slave Okay Queries
Documents
You can configure an entire document to send all reads to the slaves by using the slaveOkay flag:
<?php
/** @Document(slaveOkay=true) */
class User
{
/** @Id */
private $id;
}
Now all reads involving the User document will be sent to a slave.
Queries
If you want to instruct individual queries to read from a slave you can use the slaveOkay() method
on the query builder.
<?php
$qb = $dm->createQueryBuilder('User')
->slaveOkay(true);
$query = $qb->getQuery();
$users = $query->execute();
The data in the query above will be read from a slave. Even if you have a @ReferenceOne or@ReferenceMany resulting from the query above it will be initialized and loaded from a slave.
<?php
/** @Document */
class User
{
/** @ReferenceMany(targetDocument="Account") */
private $accounts;
}
Now when you query and iterate over the accounts, they will be loaded from a slave:
<?php
$qb = $dm->createQueryBuilder('User')
->slaveOkay(true);
$query = $qb->getQuery();
$users = $query->execute();
foreach ($users as $user) {
foreach ($user->getAccounts() as $account) {
echo $account->getName();
}
}