How to post data from one rails app to another in rails?

Question

I have to post data from one rails app to another and get a response in return from the latter app to the former.Both are RESTFUL apps

my api to post data from the former app is as follows

 class OrderApiController < ApiController
    def send_invoice_data
        response = Hash.new
        result = Hash.new
        order = Order.includes(:status, :user, payment: 
                 [:status]).where(txnid: params[:txnid]).first
        if order
            if (['Notary', 'Attestation','Franking'].include? 
              order.service.name)
                no_of_copies = ((order.answers.where(question_id: 
               [37,15]).length > 0) ? order.answers.where(question_id: 
                [37,15]).first.body : 0).to_i 
            else
                no_of_copies = ((order.answers.where(question_id: 
                [37,15]).length > 0) ? order.answers.where(question_id:     
                [37,15]).first.body : 0).to_i + 1
            end
            result['order'] = {
                      id: order.id, 
                      txnid: order.txnid, 
                      service_name: order.service.name, 
                      :
                      :
                      discount: order.discount || '',
                      stamp_amount: order.stamp_amount || '',
                      delivery_amount: order.delivery_amount || '',
                      no_of_copies: no_of_copies
                      } 
            response.merge! ApiStatusList::OK
            response['result'] = result
        else
            response.merge! ApiStatusList::INVALID_REQUEST
        end
        render :json => response
    end

 end

The controller code for the latter app is as follows:

  class InvoiceApiController < ApiController

        def order_invoice
            response = Hash.new
            result = Hash.new
            debugger
            if params[:order] && params[:order][:txnid] 
                @order = params[:order]
                @order['stamp_amount'] = params[:order][:stamp_amount] || ''
                @order['txnid'] = params[:order][:txnid]
                @order['service_name'] = params[:order][:service_name] || ''
                @order['payment_date'] = params[:order][:payment_date]
                :
                :
                @order['discount'] =  params[:order][:discount] || ''
                @no_of_copies = params[:order][:no_of_copies]
                pdf = WickedPdf.new.pdf_from_string(
                render_to_string(template: 
                'invoices/generate_invoice.pdf.erb', filename: params[:order]
                 [:txnid] + ".pdf" ,
                                type: 'application/pdf', disposition: 
                'attachment', print_media_type: true))
                save_path = Rails.root.join('pdfs', @order['txnid'] + ".pdf")
                File.open(save_path, 'wb') do |file|
                  file << pdf
                  filename = @order['txnid'] + ".pdf"
                end
               file_name =  @order['txnid'] + ".pdf"
               upload = Invoice.upload(save_path, file_name)
               response['result'] = upload
               response.merge! ApiStatusList::OK
            else
                response.merge! ApiStatusList::INVALID_REQUEST
            end 
            render :json => response 

        end

The second app sends the link of the pdf generated invoice as response back to the former app.

The link for the later app would like this:

http://192.168.0.104:3000/api/v0/generate_invoice?key=value

How do I achive this. I am a rails novice quite new to RESTFUL api development as well.So please help with elaboration for the solution.

Answer 1

I found a solution by using Httparty gem. This what I did

 gem 'httparty' 

in gemfile of both apps

bundle install

in console

The modified send_invoice method is below

 def send_invoice_data
    response = Hash.new
    result = Hash.new
    debugger
    order = Order.includes(:status, :user, payment: 
     [:status]).where(txnid: params[:txnid]).first
    if order
        if (['Notary', 'Attestation','Franking'].include? 
    order.service.name)
            no_of_copies = ((order.answers.where(question_id: 
         [37,15]).length > 0) ? order.answers.where(question_id: 
        [37,15]).first.body : 0).to_i 
        else
            no_of_copies = ((order.answers.where(question_id: 
            [37,15]).length > 0) ? order.answers.where(question_id: 
            [37,15]).first.body : 0).to_i + 1
        end
         response.merge! ApiStatusList::OK
         response = 
             HTTParty.post('http://localhost:3001/api/v0/generate_invoice?
             key=docket', :body => { "order" => {
                  "id" => order.id, 
                  "txnid" => order.txnid, 
                  "service_name" => order.service.name, 
                  "payment_date" => order.payment ?  
                   order.payment.created_at.strftime('%d/%m/%Y') : 
                   order.created_at.strftime('%d/%m/%Y'), 
                            :
                            :
                  "delivery_amount" => order.delivery_amount || '',
                  "no_of_copies" => no_of_copies}}.to_json, :headers => { 
                 'Content-Type' => 'application/json'})
    else
        response.merge! ApiStatusList::INVALID_REQUEST
    end
    render :json => response
 end