will_paginate is a pagination library that integrates with Ruby on Rails, Sinatra, Merb, DataMapper and Sequel.
Installation:
## Gemfile for Rails 3, Sinatra, and Merb gem 'will_paginate', '~> 3.0'
See installation instructions on the wiki for more info.
## perform a paginated query: @posts = Post.paginate(:page => params[:page]) # or, use an explicit "per page" limit: Post.paginate(:page => params[:page], :per_page => 30) ## render page links in the view: <%= will_paginate @posts %>
And that's it! You're done. You just need to add some CSS styles to make those pagination links prettier.
You can customize the default "per_page" value:
# for the Post model class Post self.per_page = 10 end # set per_page globally WillPaginate.per_page = 10
New in Active Record 3:
# paginate in Active Record now returns a Relation Post.where(:published => true).paginate(:page => params[:page]).order('id DESC') # the new, shorter page() method Post.page(params[:page]).order('created_at DESC')
See the wiki for more documentation. Ask on the group if you have usage questions. Report bugs on GitHub.
Happy paginating.