在IN上查询Doctrine ManyToMany标签的关系

Question

A little bit of background:

• I've got Office entities.
• Offices may have articles.
• Articles have tags.
• Offices can share a tag with other offices (and therefore articles).

Now I'm trying to build a query that says: "Fetch all articles that either belong to my office or have tags that have been shared with my office".

I've tried this in MySQL and the following query works as expected:

SELECT 
    *  
FROM 
    `articles` `a` 
WHERE 
    (
        `office_id` = 2 
        OR 
        `a`.`id` IN (
            SELECT 
                `at`.`article_id` 
            FROM 
                `article_tags` `at` 
            WHERE 
                `at`.`article_id` = `a`.`id` 
            AND 
                `at`.`tag_id` IN 
                (
                    SELECT 
                        `st`.`tag_id` 
                    FROM 
                        `shared_tags` `st` 
                    WHERE 
                        `st`.`shared_with_id` = 2 
                    AND 
                        `st`.`article` = 1
                )
            )
    ) 
AND 
    `status` = 1

My entities are as follows:

Article

/**
 * @ORM\ManyToMany(targetEntity="Tag", inversedBy="articles")
 * @ORM\JoinTable(name="article_tags")
 * @var ArrayCollection|Tag[]
 */
protected $tags;

Tag

/**
 * @ORM\ManyToMany(targetEntity="Article", mappedBy="tags")
 * @var ArrayCollection|Article[]
 */
protected $articles;

SharedTag

class SharedTag extends Entity
{

    /**
     * @ORM\Id
     * @ORM\GeneratedValue
     * @ORM\Column(type="integer")
     * @var int
     */
    protected $id;

    /**
     * @ORM\ManyToOne(targetEntity="Office", inversedBy="sharedTags")
     * @ORM\JoinColumn(name="shared_with_id", referencedColumnName="id")
     * @var Office
     */
    protected $sharedWith;

    /**
     * @ORM\ManyToOne(targetEntity="Office", inversedBy="sharedTags")
     * @ORM\JoinColumn(name="shared_by_id", referencedColumnName="id")
     * @var Office
     */
    protected $sharedBy;

    /**
     * @ORM\ManyToOne(targetEntity="Tag", inversedBy="sharedTags")
     * @var Tag
     */
    protected $tag;

    /**
     * @ORM\Column(type="boolean", options={"default" = 0})
     * @var bool
     */
    protected $template = 0;

    /**
     * @ORM\Column(type="boolean", options={"default" = 0})
     * @var bool
     */
    protected $article = 0;

    /**
     * @ORM\Embedded(class = "\ValueObjects\CreatedAt", columnPrefix=false)
     * @var CreatedAt
     */
    protected $createdAt;

}

So, how can I query this in DQL or with the QueryBuilder? I've tried several methods but I can't seem to use the tag_id from the relationship articles.tags in a WHERE IN() query.

Thank you in advance!

---

Edit:

After some trial and error and thanks to Jean's answer I was able to query it like this:

SELECT
  a
FROM
  Article a
LEFT JOIN a.tags t
LEFT JOIN a.office o
LEFT JOIN o.sharedTags st
WHERE
  (
    a.office = :office
    OR
    (
      t = st.tag
      AND
      st.sharedWith = :office
      AND
      st.article = 1
    )
  )
AND
  a.status.status = :status
AND
  a.template IS NULL
GROUP BY a.id

Answer 1

You should use a join and not subqueries. This way you have better performance and less complicated DQL code:

SELECT DISTINCT `a`
FROM `articles` `a` 
LEFT JOIN `a.tags` `t`
LEFT JOIN `t.shared_with_id` `o`
WHERE (`a`.`office_id` = 2 OR `o`.`id` = 2) 
AND `status` = 1