Rails - How to add contacts to SendGrid marketing campaigns via API

Question

I need to make HTTP get and post requests with SendGrid to add contacts to our account, however there doesn't seem to be a gem for their email marketing functionality.

It boils down to making a few requests however I can't get past their authentication step.

They say to do this

curl -X "GET" "https://api.sendgrid.com/v3/templates" -H "Authorization: Bearer Your.API.Key-HERE" -H "Content-Type: application/json"

And using the Rest-Client gem I'm trying to make the authentication request like so...

username = 'username'
api_key = 'SG.MY_API_KEY'
key = Base64.encode64(username + ":" + api_key)
headers = {"Authorization" => "Bearer #{key}", "Content-Type" => "application/json"}
response = RestClient.get 'https://api.sendgrid.com/v3/templates', headers

which returns...

RestClient::Unauthorized: 401 Unauthorized: {"errors":[{"field":null,"message":"authorization required"}]}

The ultimate objective of using their API is to add contacts.

How am I incorrectly making this get request?

Answer 1

I ended up figuring it out. For future reference, here's the code that worked...

require 'rest_client'
api_key = 'YOUR_API_KEY'
headers = {'Authorization' => "Bearer #{api_key}"}
data = {:email => 'email@website.com'}
response = RestClient.post 'https://api.sendgrid.com/v3/contactdb/recipients', [data].to_json, headers

Answer 2

To add marketing contacts to your SendGrid account via the API, see the documentation at https://sendgrid.api-docs.io/v3.0/contacts-api-recipients/add-recipients

You can see sample code in the "code generation" section of the page.

require 'uri'
require 'net/http'

url = URI("https://api.sendgrid.com/v3/contactdb/recipients")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
http.verify_mode = OpenSSL::SSL::VERIFY_NONE

request = Net::HTTP::Post.new(url)
request["authorization"] = 'Bearer <<YOUR_API_KEY>>'
request["content-type"] = 'application/json'
request.body = "[{\"email\":\"example@example.com\",\"first_name\":\"\",\"last_name\":\"User\",\"age\":25},{\"email\":\"example2@example.com\",\"first_name\":\"Example\",\"last_name\":\"User\",\"age\":25}]"

response = http.request(request)
puts response.read_body