Using nested queries and many to many relationships in Doctrine's QueryBuilder - php

Question

So I'm having a bit of trouble thinking of how to approach this using a query builder. Currently, I have three objects that are the following:
HelpRequest
id
...
status
Filter
id
name
statuses -> ManyToMany(targetEntity="Status")
Status
id
name
A filter can have multiple statuses so there is a table that is keeping track what statuses are part of a specific filter.
Sample Data
help_requests
---
| id | content | status |
| 1 | hello | 3 |
filters
---
| id | name |
| 1 | Active |
| 1 | Inactive |
statuses
---
| id | name |
| 1 | Open |
| 2 | Closed |
| 3 | Waiting User Response |
status_filter
---
| status_id | filter_id |
| 1 | 1 |
| 3 | 1 |
| 2 | 2 |
The status_filter table is automatically generated from a ManyToMany relationship in doctrine between a Status object and a Filter object.
Based on the given information, I've written this SQL query but now I'm having troubles writing this with QueryBuilder.
SELECT * FROM help_requests WHERE status IN (SELECT status_id FROM status_filter WHERE filter_id = 1)
If there's any more information I can give, let me know. I've read multiple questions on SO and have tried a number of things but I can't seem to get it right. I'm aware I could just hard coded that query but I'd like the experience using QueryBuilder
Thanks for the help!
Update
In the end, since I couldn't get it to work with QueryBuilder and I didn't want to create a new entity solely to map two other entities together, I decided to use createQuery() instead and this is what I came up with:
SELECT
hr
FROM
HelpRequest hr
WHERE
hr.status
IN (
SELECT
s.id
FROM
Filter f
JOIN
f.statuses s
WHERE
f.name = :name
)
Thank you everyone for the help.

Answer 1

Try this query, and put is in your HelpRequestsRepository class:
$subquery = $this->->select('st.status_id')
->from('/path/to/StatusFilter', 'st')
->where('st.filter_id = 1');
$query = $this->createQueryBuilder('hr')
->select('*')
->where('hr.status IN (' . $subquery->getDQL() . ')')
->getQuery();

Answer 2

Try this approach in the HelpRequestsRepository class:
$qb = $this->createQueryBuilder('hr');
$qb->select("hr");
$qb->join("::Status","s",Expr\Join::INNER_JOIN, "hr.status=s" );
$qb->join("::Filter","f",Expr\Join::INNER_JOIN, "s.filters=f" );
$qb->where("f.name = :name");
$qb->setParameter('name', $nameOfTheFilterToBeFound)
Hope this help