How to do a simple GraphQL query in a native Ruby script - ruby

Question

I'm trying to figure out how to do a simple GraphQL query without using gems. The following cURL commands works
curl -X POST "https://gql.example.com/graphql/public" \
-H "Authorization: Bearer <ACCESS_TOKEN>" \
-H "Content-Type: application/json" \
-d '{ "query": "query { user { id defaultEmail } }", "variables": {} }'
and the corresponding javascript code is
fetch('https://gql.example.com/graphql/public', {
method: 'POST',
headers: {
'Authorization': 'Bearer <ACCESS_TOKEN>',
'Content-Type': 'application/json',
},
body: JSON.stringify({
query: 'query { user { id defaultEmail } }',
variables: {}
})
})
.then(r => r.json())
.then(data => console.log(data));
Is it possible to do this easily in Ruby without using the graphql gem? I only need to do simple queries like the examples above so I'm hoping it's easy to do them in a single Ruby script.

Answer 1

You can use Ruby core lib Net/HTTP and build your requests like so:
require 'net/http'
uri = URI('https://gql.example.com/graphql/public')
params = {'query': 'query { user { id defaultEmail } }', 'variables': {} }
headers = {
"Authorization'=>'Bearer #{ENV['MY_ACCESS_TOKEN']}",
'Content-Type' =>'application/json',
'Accept'=>'application/json'
}
https = Net::HTTPS.new(uri.host, uri.port)
response = https.post(uri.path, params.to_json, headers)
See this answer as well