Result not as expected when used depthField in $graphLookup

MongoDB University M121: The MongoDB Aggregation Framework
#1

Hi,

I am trying to execute the following command and do not get the results as expected as this is the same command as used in the class chapter 3 $graphLookup: maxDepth and depthField

db.child_reference.aggregate([
{
$match: {name: “Dev”},

                    },
                    {$graphLookup: {
                     from: "child_reference",
                     startWith: "$direct_reports",
                     connectFromField: "direct_reports",
                     connectToField: "name",
                     as: "descendants",
                     maxDepth: 1,
                     depthField: "level"}
                    }
                    ]).pretty

I am not able to identify the issue

Any help?

Thanksdepthfield

#2

@Rafeeq_01820

pretty() is a function, and must have the () after the command. As it is, what you’re seeing is the code for the function, you’re not executing it. Good luck.

#3

You got it. Yes it’s a function and not sure how I missed those brackets. Thank you for finding that out. It works great now.