How to search by hash in Ruby?

Question

Ruby on Rails

For example, there is such a hash:

var = {
  "aaa"=>{"age"=>11},
  "bbb"=>{
    "age"=>11,
    "children"=>{
      "child_1"=>{"age"=>11},
      "child_2"=>{"age"=>11}
    }
  },
  "ccc"=>{"age"=>11}
}

For example, in var you need to find the child_2 property and get it.
That is, how to write a function that will search the entire hash, including children.

Answer 1

If the hash structure is known in advance and the location of child_2 does not change internally, then in Ruby 2.3+ you can simply do this:
var.dig("bbb", "children", "child_1")