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  • Difference between render And redirect_to

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    render and redirect_to works in the similar way in your web browser , as they both takes you to a new page but the only difference between them is :

    • When you call render it creates a complete response which is sent to your browser.
    •  If we do not define a call to our render , it will simply search for the view of the same name as that of your controller's action name.
    • You can also render another view in your controller by simply calling the render and providing it with the action name.   eg:render 'profile'
    • If you want to render a view to a different controller , you just define the controller name and the action name.   eg:render 'users/profile'
    • You can even render the arbitrary files.
    • render_to_string is a method which does not send a response to the browser , instead it returns a string which tells what is going to be rendered.

    Example:

     

    class UsersController < ApplicationController
        def update
           @user=User.find(params[:id])
           if @user.update(user_params)
             render 'profile'
           end
         end
    end

     

     

    2.1 redirect_to will make a different request to the browser to redirect it to the new location.

    2.2 It can take you to a completely different location in your website or to some defined location in your        application.

    2.3 By default rails directs you to 302 http request.

     

    Example:

    class UsersController < ApplicationController
          def update
             @user=User.find(params[:id])
             if @user.update(user_params)
               redirect_to profile_path
             end
          end
    end

     

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