- if ('' !== $tags) {
- foreach (explode(',', $tags) as $tag) {
- $qb->andWhere('t.label = :label')->setParameter('label', $tag);
+ if (\is_string($tags) && '' !== $tags) {
+ foreach (explode(',', $tags) as $i => $tag) {
+ $entryAlias = 'e' . $i;
+ $tagAlias = 't' . $i;
+
+ // Complexe queries to ensure multiple tags are associated to an entry
+ // https://stackoverflow.com/a/6638146/569101
+ $qb->andWhere($qb->expr()->in(
+ 'e.id',
+ $this->createQueryBuilder($entryAlias)
+ ->select($entryAlias . '.id')
+ ->leftJoin($entryAlias . '.tags', $tagAlias)
+ ->where($tagAlias . '.label = :label' . $i)
+ ->getDQL()
+ ));
+
+ // bound parameter to the main query builder
+ $qb->setParameter('label' . $i, $tag);