How to build a Docterine Inner Join Query in Symfony - php

Question

Im working on a Symfony project and I want to create Doctrine Query for this SQL.
USER table :
columns -
NICK_NAME
REVIEWS table:
columns -
USER_ID
, REVIEW,
CREATED_AT
Thank you
SELECT
`USER`.NICK_NAME,
REVIEWS.REVIEW,
REVIEWS.CREATED_AT
FROM
REVIEWS
INNER JOIN `USER` ON REVIEWS.USER_ID = `USER`.ID
WHERE
REVIEWS.MOVIE_ID = 625
GROUP BY
REVIEWS.USER_ID
I tried something like this
$q = Doctrine_Query::create()
->select("u.NICK_NAME,r.REVIEW,r.CREATED_AT")
->from('REVIEWS r')
->innerJoin('`USER` ON REVIEWS.USER_ID = `USER`.ID')
->where('REVIEWS.MOVIE_ID = 625')
->groupBy('REVIEWS.USER_ID');
and got this:
500 | Internal Server Error | Doctrine_Exception Couldn't find class `USER`

Answer 1

Without using complex DQL in Symfony you can use simple SQL.
Try this function in the controller where you want to run the DQL.
function getUserReviews($params) {
$query = "SELECT REVIEWS.REVIEW, `USER`.NICK_NAME, REVIEWS.CREATED_AT FROM REVIEWS INNER JOIN `USER` ON REVIEWS.USER_ID = `USER`.ID WHERE REVIEWS.MOVIE_ID ='".$params."'";
return Doctrine_Manager::getInstance()->getCurrentConnection()->fetchAssoc($query);
}

Answer 2

You Should Specify Entity name not table name in DQL like this YourBundleName:EntityName
Use it like this:
$q = Doctrine_Query::create()
->select("u.NICK_NAME,r.REVIEW,r.CREATED_AT")
->from('REVIEWS r')
->innerJoin('YourBundleName:EntityName ON REVIEWS.USER_ID = `USER`.ID')
->where('REVIEWS.MOVIE_ID = 625')
->groupBy('REVIEWS.USER_ID');
Alternative Solution if above solution doesn’t work:
$q = Doctrine_Query::create()
->select("u.NICK_NAME,r.REVIEW,r.CREATED_AT")
->from('REVIEWS r')
->innerJoin('YourBundleName:EntityName', 'USER_ID')
->where('REVIEWS.MOVIE_ID = 625')
->groupBy('REVIEWS.USER_ID');
If that doesn't work, use Inner join in following manner:
->InnerJoin('YourBundleName:Entity', '<alias>', Expr\Join::ON, $qb->expr()->eq('IDENTITY(<alias.<clummn_name>)', '<comapring_column>'))
inner Join from Doctrine2 Documentation:
Example -
$qb->innerJoin('u.Group', 'g', Expr\Join::WITH, qb->expr()->eq('u.status_id', '?1'))
$qb->innerJoin('u.Group', 'g', 'WITH', 'u.status = ?1')
$qb->innerJoin('u.Group', 'g', 'WITH', 'u.status = ?1', 'g.id')
innerJoin Method Prototype:
innerJoin($join, $alias, $conditionType = null, $condition = null, $indexBy = null);
Find More Here
Hope this will help you.