Ruby on Rails pagination using Kaminari Gem

Kaminari gem is used to create pagination in Ruby on Rails application.
   
      Step 1: Open the terminal and Create the new application

       >  rails new simplepage

      Step 2: After you create the blog application, switch to its folder:
     

       > cd simplepage

     
      Step 3: Open and Add it to your Gemfile to following line
   

        gem 'kaminari'

   
      Step 4: Run the bundle install.It's used to install the gem dependencies that are  already mentioned in Gemfile
       

       > bundle install

     
      Step 5: create the form using scaffolding. Rails scaffolding is a quick way to generate some of the major pieces of an application.(Create, Edit, Delete, Update, Show)
   

       > rails g scaffold student name:string mobile:string city:string

    
      Step 6: Run the migration command.It's used to create the STUDENT table in database.
   

       > rake db:migrate

   
      Step 7: Open and add the following lines to routes.rb file (Location: simplepage/config/routes.rb)
  

        root 'students#index'

      
      # students => controller
      # index => function
   
      Step 8: Open and edit the students_controller.rb (Location: simplepage/app/controllers/students_controller.rb)
   

       def index
         @students = Student.all
       end

   
     changed to
   

       def index
         @students = Student.all.page(params[:page]).per(3)
       end

   
     # per(3) => It's indicates the per page three rows only .
   
      Step 9: Open and add following lines to index.html.erb (Location: simplepage/app/views/students/index.html.erb)
   

       <%= paginate @students %>  

       Like this

       <tbody>

         <%= paginate @students %>

         <% @students.each do |student| %>

           <tr>

              <td><%= student.name %></td>

              <td><%= student.mobile %></td>

              <td><%= student.city %></td>

              <td><%= link_to 'Show', student %></td>

              <td><%= link_to 'Edit', edit_student_path(student) %></td>

              <td>

                <%= link_to 'Destroy', student, method: :delete,

                data: { confirm: 'Are you sure?' } %></td>

           </tr>

         <% end %>

       </tbody>

   
      Step 10: Run the web Server
   

       > rails server

 
      Step 11 : Open a browser window and navigate to http://localhost:3000