How to Convert a JSON String to a Map in Ruby

How to Convert a JSON String to a Map in Ruby ?

Answer

To convert a JSON string to a map in Ruby, you can use the JSON module, which provides the parse method to parse JSON data and convert it into a hash.

✐ Examples

1 Converting a JSON String to a Map

We can convert a JSON string to a map in Ruby by using the JSON module's parse method to parse the JSON string and convert it into a hash.

For example,

We start by requiring the 'json' module.
We define a JSON string containing key-value pairs.
We use the JSON.parse method to parse the JSON string into a hash.
We print the resulting hash to the console to verify the conversion.

Ruby Program

require 'json'

# Define a JSON string
json_string = '{"1": 10, "2": 20, "3": 30, "4": 40, "5": 50}'

# Parse the JSON string into a hash
my_map = JSON.parse(json_string)

# Print the resulting hash
puts 'Map from JSON string:'
my_map.each do |key, value|
  puts "#{key}: #{value}"
end

Output

Map from JSON string:
1: 10
2: 20
3: 30
4: 40
5: 50

Summary

In this tutorial, we learned How to Convert a JSON String to a Map in Ruby language with well detailed examples.

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