Rails 3 to Rails 4 Migrations Ruby Version 2.2.2 Rails Version 4.2.3 Modification files 1)Gemfile Latest Gems related versions 2)Routes Change the match method with via get or post 3)Controllers New params creating and updating the data. i)params.require(:person).permit(:name, :age) 4)Models Active Record queries need to change i)Profile.where(“code is not null”) Profile.where.not(code: null) ii)Write the scopes in Models 5)Javascripts,stylesheets,images_paths Move the javascriptfiles and stylesheets to assets folder 6)Facebook,Linkedin,Twitter apis need to change Code changes Latest versions of the API Git Related Commands git branch List of branches for the git git chekout -b newbranc...
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