Rhomobile is cross-platform mobile framework to develop native application. The documentation for developing native app is nice. I recently tried consuming webservice using savon gem in rhoconnect. The most tricky part is to get input from rhodes application and use that as a parameters in rhoconnect webservice call. The gist of things needed for making SOAP call are

* Create a rhodes application
* Pass the input parameters to rhoconnect application
* Make a SOAP request in rhoconnect
* Display the SOAP response in rhodes from rhoconnect

We will use http://www.webservicex.net/length.asmx?WSDL webservice to consume and manipulate response in rhoconnect. Let’s see how to make these things work.

1. Sample Rhodes Application with search action

First we will create a rhodes app with model Unit as shown

	rhodes app rhodes-unit-webservice
	rhodes model Unit value,from,to
	

Enable sync in Model to connect to rhoconnect

	class Product
	enable :sync
	end
	

Pass inputs given by user to rhoconnect search action

	def search
         Unit.search(
            :from => 'search',
            :search_params => {
                :Value => @params['unit']['value'],
                :From => @params['unit']['from'],
                :To => @params['unit']['to']
                 },
            :callback => url_for(:action => :search_callback),
            :callback_param => ""
        )
       render :action => :wait
      end
      

We will implement search callback after SOAP request done in rhoconnect. Now let’s see what to do in rhoconenct

2. Rhoconnect Application with SOAP webservice call in search action

We will create a basic rhoconnect application with Unit source adapter as shown

	  rhoconnect app rhoconnect-unit-webservice
	  rhoconnect source Unit
	  

Add savon gem in Gemfile

	  gem 'savon'
	  

Call ChangeLengthUnit method in webservice using savon

	  require 'savon'
          @webservice_url = "http://www.webservicex.net/length.asmx?WSDL"
          client = Savon::Client.new(@webservice_url )
          data= client.request :change_length_unit do
          soap.body = {
           "LengthValue" => params["Value"],
           "fromLengthUnit" => params["From"],
           "toLengthUnit" => params["To"]
            }
          end
          puts data.to_hash
	  

Here data.to_hash has the response of webservice called. We will get inputs for this SOAP request from rhodes search action. We can access those params in rhoconnect search action as

          def search(params)
	  # params - values from rhodes
	  end
	  

We will assign the response of SOAP call to @result which will in turn stores in redis database as shown

	  puts data.to_hash
	  @result = data.to_hash
	  @result
          

3. Display SOAP response from rhoconnect

Now response of SOAP request is stored in redis database. We can access it in search callback in rhodes as

	def search_callback
          status = @params["status"]
          if status == "complete"
             data = Unit.find_all
             data.each do |val|
               Alert.show_popup("The Converted value is #{val.change_length_unit_result}")
             end
          WebView.navigate(url_for :action => :index)
         end
       end
       

All values stored in rhoconnect can be retrieved through find query. This is how we consume SOAP webservice from rhodes through rhoconnect.

Some of the screenshots taken from Iphone Mobile

I hope this blog will be helpful for making SOAP request in rhomobile. Source code of rhodes and rhoconnect application is available at https://github.com/Dhepthi/rhodes-unit-webservice, https://github.com/Dhepthi/rhoconnect-unit-webservice.Please feel free to improve and send me a pull request. Any suggestion or comments are welcome.

Tags: rhoconnect, rhodes, rhomobile, Ruby
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2 Responses to “Consume SOAP webservice in rhoconnect”

1. Karthick says:

   May 4, 2012 at 4:44 PM

   Error hitting like this…can you mail how to run this code

   APP| [Debugger] Unable to open connection to debugger: #

   APP| Params: {“sync_type”=>”incremental”, “status”=>”error”, “error_code”=>”7″, “error_message”=>”", “rho_callback”=>”1″, “search_params”=>{“Value”=>”6″, “From”=>”Feet”, “To”=>”Inches”}}
2. Karthick says:

   May 4, 2012 at 4:44 PM

   Error hitting on me…can you mail how to run this code..