CODEWITHSUNDEEP
rubyarraysjson
Meambani
Meambani

Reputation: 13

If I have a JSON data, how do I return an array of JSON file?

I have a JSON file formated like this:

[
  {
    id: 2011136021,
    tree_level: 3,
    main_category_id: 105,
    sub_nodes: [
      128001,
      128002,
      128003,
      2011136046
    ],
  }
]

I want to return the value of sub_nodes based on the parent ID 2011136046:

sub_nodes: [
  128001,
  128002,
  128003,
  2011136046
],

Can someone please help me with that?

Upvotes: 0

Views: 61

Answers (1)

Mulan
Mulan

Reputation: 135197

For just one second, let's pretend you have valid JSON

require "json"

json = '{"id":2011136021,"tree_level":3,"main_category_id":105,"sub_nodes":[128001,128002,128003,2011136046]}'

obj = JSON.parse(json)
# => {"id"=>2011136021, "tree_level"=>3, "main_category_id"=>105, "sub_nodes"=>[128001, 128002, 128003, 2011136046]}

sub_nodes = obj["sub_nodes"]
# => [128001, 128002, 128003, 2011136046]

If you want to convert sub_nodes back to JSON

JSON.generate(sub_nodes)
# => "[128001,128002,128003,2011136046]"

But now we can stop pretending since you don't have valid JSON.

Upvotes: 3

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