Traverse JSON object/array and delete field of selected objects

Question

I have a bunch of JSON files (fixtures) from which I need to delete a field if the "current" object happens to match a select filter.

I'm able to match the desired objects but I'm not sure how to perform the deletion of the field so that the object is modified in-place.

So far this is the closest I've gotten to:

jq '..|objects|select(.__typename == "MyType") | del(.delete_me)' fixture.json

But doesn't seem to work correctly, assignment of the field is straight forward I'm thinking I could probably try and use path as $paths and getpath to set the "parent" value with the output of del but I'm stuck and don't quite fully understand the functions.

Any help is really appreciated!

peak · Accepted Answer · 2021-11-12 03:53:00Z

1

For "in-place" deletion of a key, you might find walk quite congenial:

walk(if type == "object" and .__typename == "MyType" 
     then del(.delete_me) else . end)

answered Nov 12, 2021 at 3:53

peak

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1 Comment

Tristian Over a year ago

Let me give it a try, seems clear enough

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