Lets say i have only one document which is related Many to One. I want to find which document contains my child doc having it's $id. Does it require Query on Array which is not yet supported?
TL;DR
The user was looking for a way to search for parent documents based on the ID of a child document. They realized they had overlooked the "two-way" relationship option. They were wondering if a query on an array, which is not yet supported, would be necessary. The solution is to utilize the "two-way" relationship option to easily find the parent document based on the ID of the child document.