Using Ruby to convert JSON data into an array

Question

Using Ruby to convert JSON data into an array

This is an example of JSON code containing job and applicant information

{
"jobs": [
{
  "id": 1,
  "title": "Software Developer",
  "applicants": [
    {
      "id": 1,
      "name": "Rich Hickey",
      "tags": ["clojure", "java", "immutability", "datomic", "transducers"]
    },
    {
      "id": 2,
      "name": "Guido van Rossum",
      "tags": ["python", "google", "bdfl", "drop-box"]
    }
  ]
},
{
  "id": 2,
  "title": "Software Architect",
  "applicants": [
    {
      "id": 42,
      "name": "Rob Pike",
      "tags": ["plan-9", "TUPE", "go", "google", "sawzall"]
    },
    {
      "id": 2,
      "name": "Guido van Rossum",
      "tags": ["python", "google", "bdfl", "drop-box"]
    },
    {
      "id": 1337,
      "name": "Jeffrey Dean",
      "tags": ["spanner", "BigTable", "MapReduce", "deep learning", "massive clusters"]
    }
  ]
}
]
}

I am looking to extract specific information from this JSON in Ruby

require 'json'
file = File.read(filepath)
data_hash = JSON.parse(file)

What are some ways I can iterate over the data_hash and select the necessary information?

ruby arrays json

Answer 1

Answer №1

If you have an array of jobs stored in data_hash['jobs'], utilizing the Array#each method is a convenient way to iterate through each job:

data_hash['jobs'].each {|job| ... }

Answer 2

If you have an array of jobs stored in data_hash['jobs'], utilizing the Array#each method is a convenient way to iterate through each job:

data_hash['jobs'].each {|job| ... }

Answer 3

Answer №2

Here is an example,

arr = Array.new
data_hash.each { |task| 
arr.insert(task['title'])
}

Answer 4

Here is an example,

arr = Array.new
data_hash.each { |task| 
arr.insert(task['title'])
}

Answer 5

Answer №3

To condense your code, consider utilizing Array#map

data_hash['jobs'].map do |job| 
   # Customize the job as needed
   keys_to_keep = %w(description location)
   job.select{ |key| keys_to_keep.include?(key) }
end

Answer 6

To condense your code, consider utilizing Array#map

data_hash['jobs'].map do |job| 
   # Customize the job as needed
   keys_to_keep = %w(description location)
   job.select{ |key| keys_to_keep.include?(key) }
end

Using Ruby to convert JSON data into an array

Answer №1

Answer №2

Answer №3

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