Transforming the name of key deeper in the JSON structure with jq

Question

I have following json:

{
  \"vertices\": [
    {
      \"__cp\": \"foo\",
      \"__type\": \"metric\",
      \"__eid\": \"foobar\",
      \"name\": \"Undert         


        

Answer 1

From your example data it looks like you intend lots of little manipulations so I'd break things out into stages like this:

  .nodes = .vertices                     # \ first take care of renaming
| del(.vertices)                         # / .vertices to .nodes

| .nodes = [ 
       .nodes[]                          # \ then scan each node
     | . as $n                           # /

     | del(._type, .__eid)               # \ whatever key-specific tweaks like 
     | .label = "metric: \(.name)"       # / calculating .label you want can go here

     | reduce keys[] as $k (             # \
         {};                             # | final reduce to handle renaming
         .[$k | sub("^_+";"")] = $n[$k]  # | any keys that start with _
       )                                 # /
  ]