Fix: Add missing connection parameter for jobs with dependencies

[prepin]

Description

Fixes display of RQ tasks that have other task they depend on. Connection parameter was missing in code that fetches dependencies. It is required as of RQ 2.0 (see #495).

Type of change

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• [ x] I have performed a self-review of my own code
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have run tests (pytest) that prove my fix is effective or that my feature works
• I have updated the CHANGELOG.md file accordingly
• I have added tests that prove my fix is effective or that my feature works

Testing

hello.py

from redis import Redis
from rq.queue import Queue

from tasks import download, review

redis_conn = Redis()
q = Queue("default", connection=redis_conn)


def main():
    download_job = q.enqueue(download, "Filename.txt")
    review_job = q.enqueue(review, args=[download_job.id], depends_on=download_job)


if __name__ == "__main__":
    main()

tasks.py

from redis import Redis
from rq.job import Job


def download(name):
    return f"{name} Downloaded "


def review(job_id):
    download_job = Job.fetch(job_id, connection=Redis())
    result = download_job.return_value()
    if result:
        download_result = result + "and Reviewed"
        return download_result
    return "no result"

Run hello.py and open review job in RQ-Dashboard.