In jq get array based on another array

Question

I am using jq v1.5. Given the input:

{
    "mine": [
        "foo",
        "baz"
    ],
    "stuff": {
        "foo": {
            "name": "Foo"
        },
        "bar": {
            "name": "Bar"
        },
        "baz": {
            "name": "Baz"
        },
        "qux": {
            "name": "Qux"
        }
    }
}

How do I get all the .stuff.names for .mine?

For example, desired output:

[
    "Baz",
    "Foo"
]

Answer 1

Using a simple jq filter and no other shell processing, do it as below.

jq '[.mine[] as $in | .stuff[$in].name]'

The logic is basically index the values from .mine and for each entry get the equivalent .name value in .stuff

jqplay - URL