Associated objects

[RajRoR]

> Issue.where(["project IN (?)", current_user.projects])
>> *** TypeError Exception: can't convert Array into Hash

Model associations

1. user has_many projects
2. project has_many issues

My goal is to get all issues related to an user through his projects. I tried using 'OR' condition but again, it was unsuccessful as the where needs only hash.

Can you guide me to to achieve the goal using minimum API calls?