Create a Rhodes application which will sync data from rails application using Rhosync

In this blog we will create a Rhodes application which will synchronize your data from rails application through Rhosync.

We need to create 3 applications

1. Rails Application: It will feed data in json or XML format.
2. Rhodes Application: This code will be installed in mobiles.
3. Rhosync Application: These will sync the data from rails App to Rhodes Application in your phone

Steps to create rails Application:

I will just create a rails application using scaffold:

1. rails employee_details
2. cd employee_details
3. Ruby script/generate scaffold employee name:string phno:integer address:text
4. Update your database.yml 
5. Rake db:migrate
6. Add these code in your employees controller (you can skip this step if you want to only show employee details and does not do crud operations.)

              protect_from_forgery :except => [:create, :update, :delete]

    

    7. Add this line under response in controller:

             

             format.json { render :json => @employee }

    8. Once it is done we will run it on port 3000:

              http://localhost:3000\employees.json

         we will get output in json format.

Steps to create Rhodes application:

1. Rhogen app employee
2. Cd employee
3. Rhogen model employee name,phno,address
4. Add link in index.erb to your index page
5. Enable sync in model Employee  

                enable :sync

    6.   Edit rhoconfig.txt file and set

             syncserver = 'http://localhost:9292/application

    7.    rake run:bb

Steps to create Rhosync application:

1. Rhosync app employee_server
2. Rhosync source employee
3. Then employee.erb incude json and rest client

          require 'json'

          require 'rest_client'

     4. Update the query method

  def query(params=nil)

    parsed=JSON.parse(RestClient.get("http://localhost:3000/employees.json").body)

    @result={}

    parsed.each { |item|@result[item["employee"]["id"].to_s]=item["employee"] } if parsed

    @result

  end

Now you can test this by login to your simulator.