jq - generate list of dictionaries instead of list of strings - shell

Question

The following command:
cat foo | jq -r '[.items[] | select(.metadata.random_field["foo/foo"] == "true") | .metadata.name]'
results in
[
"test_data"
]
I would like the following output to be:
[
{"name":"test", "data":"test_data"}
]
foo
{
"apiVersion": "v1",
"items":[
{
"metadata": {
"random_field": {
"foo/foo": "true"
},
"creationTimestamp": "2022-03-09T21:54:08Z",
"name": "test_data"
}
}
]
}
UPDATE: added test data so the point can be illustrated properly.

Answer 1

It's not entirely clear where the value for name in the output comes from in your question, but let's assume for a moment that it is the first part until the underscore of the name from the input. The the following produces your required output:
.items | map(
.metadata
| select(.random_field."foo/foo" == "true")
| { name: .name|split("_")|first, data: .name }
)
Output:
[
{
"name": "test",
"data": "test_data"
}
]