Simple Pagination in Ruby on Rails using will_paginate gem Tutorials

You should use the will_paginate gem for pagination.

Steps :

1. Create new project

   Develop > rails new addpagination

2. Open the gemfile inside the project folder (addpagination).Add below line in gemfile

   gem 'will_paginate', '~> 3.0'

3. Enter below command in terminal and execute.

   Develop > bundle install

4. Create the Database

   Develop > rake db:create

  
5. Create the form using scaffolding

   Develop > rails g scaffold post name:string city:string

  
6. Migrate the table

   Develop > rake db:migrate

  
7. Now run the application

   Develop > rails s

 
8. Check the application.Its working or not.

   open browser and enter http://localhost:3000/
  
9. Configure the page redirection in routes.rb inside the config folder

     root 'posts#index'

10. Now add the value into the form.

11. Open the posts_controller.rb

       def index
         #@posts = Post.all            
         @posts = Post.paginate(:page => params[:page], :per_page => 3)
       end

       # @posts = Post.all - comment this line       
       # @posts = Post.paginate(:page => params[:page], :per_page => 3) - Add this line to index function

       

12. Add below line to index.html.erb

      <%= will_paginate @posts %>
      <%= link_to 'New Post', new_post_path %>