CODEWITHSUNDEEP
ruby-on-railsangularjsapicross-domain
tomascharad
tomascharad

Reputation: 3188

Tunneling AngularJs request for use them in External Api's with Rails

Does anyone know how to perform delegate extaral apis request to rails server instead of doing them in client side in a generic way?

This is needed in order to avoid Cross Domain requests on client side (http://0.0.0.0:3000 is not allowed by Access-Control-Allow-Origin.)

Upvotes: 1

Views: 123

Answers (1)

tomascharad
tomascharad

Reputation: 3188

I found a very easy way to do this using Globbing Routes!

In the router:

match "api/*url" => "tunnel_api#tunnel_request", via: [:all]

And create the controller:

class TunnelApiController < ApplicationController
 def tunnel_request
   query_params_string = "?"
   params.each do |key, value|
     unless ((key == "controller") || (key == "action") || (key == "url"))
       query_params_string += key + "=" + value + "&"
     end
   end
   query_params_string = query_params_string[0..-2]
   uri = URI.parse("external_host_url_with_ssl" + params[:url] + query_params_string)
   http = Net::HTTP.new(uri.host, uri.port)
   http.use_ssl = true
   response = http.request(Net::HTTP::Get.new(uri.request_uri))
   render json: response.body, status: 200
 end
end

The tricky part is how to include the query params in the request, so here you can see the loop that I used for creating the query_params_string. Also remember to handle the different HTTP methods (POST, OPTIONS, …)

I've created a post in my blog for this: http://blog.tcit.cl/post/112616639620/rails-and-angularjs-with-external-api

Upvotes: 1

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