i want to get key value of array in ruby

Question

In a .rb file I am using result = JSON.parse(res.body)['data']['results'] and get

[
  {"suggestion":"Lineman","id":"49.10526"},
  {"suggestion":"Linguist","id":"27.10195"},
  {"suggestion":"Librarian","id":"25.47"},
  {"suggestion":"Lifeguard","id":"33.39"},
  {"suggestion":"Line Cook","id":"35.30125"},
  {"suggestion":"Life Coach","id":"21.209"},
  {"suggestion":"Life Guard","id":"33.1001"}
]

now I want an array like

[
  "Lineman",
  "Linguist",
  "Librarian",
  "Lifeguard",
  "Line Cook",
  "Life Coach",
  "Life Guard"
]

What should I apply to JSON.parse(res.body)['data']['results']?

result is merely an array. That it came from a JSON string is irrelevant to your question. — Cary Swoveland
– Cary Swoveland, Commented May 17, 2021 at 18:45
It is unlikely that the top code block is what you receive from JSON parse since JSON parsing is always converted to String keys and what you have shown will result in Symbol keys. Yes, this distinction is important — engineersmnky
– engineersmnky, Commented May 17, 2021 at 19:16

Vasfed · Accepted Answer · 2021-05-17 08:48:10Z

1

You can use Enumerable#map:

  other_result = result.map { |val| val['suggestion'] }

it returns a new array with results of applying the block to initial array elements

answered May 17, 2021 at 8:48

Vasfed

18.6k10 gold badges56 silver badges59 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Sachin Singh · Accepted Answer · 2021-05-17 09:38:46Z

1

Try this:

suggestions = result.pluck(:suggestion)
# ["Lineman", "Linguist", "Librarian", "Lifeguard", "Line Cook", "Life Coach", "Life Guard"]

This plucks all the suggestion values and returns them as an array.

answered May 17, 2021 at 9:38

Sachin Singh

1,10810 silver badges17 bronze badges

2 Comments

engineersmnky Over a year ago

If this is truly parsed JSON then this should be result.pluck('suggestion') as JSON is always parsed to String keys

Kalpana Sharma Over a year ago

Thanks sachin and vasfed.. it worked for me.

Collectives™ on Stack Overflow

i want to get key value of array in ruby

2 Answers 2

Comments

2 Comments

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

2 Comments

Related