model.rb

    get '/blog' do
      @css            = ["base.css","blog.css"]
      @posts          = Posts.all.reverse
      @posts_per_page = 5
      @pages          = (@posts.count / @posts_per_page).ceil + 1
      @page           = params[:page].to_i
      if @page <= 0; then @page = 1; end
      if @page > @pages; then @page = @pages; end
      @first_post     = ( ( @page - 1 ) * @posts_per_page )
      @last_post      = ( ( @page * @posts_per_page ) - 1 )
      @page_prev      = @page - 1
      @page_next      = @page + 1
      @display_posts  = @posts[@first_post..@last_post]
      erb :blog
    end

view.erb

<div class="pure-u-1-1 l-box">
	
	<% 	@display_posts.each do |r, a| %>
	
	<div class="blog-post">
		<div class="blog-title">	
			<h1><%= r.title %><h1>
		</div>
		<div class="blog-body">
			<%= r.body %>
		</div>
		<div class="blog-time">
			<h6><%= r.timestamp %></h6>
		</div>
	</div>
	<br>
	
	
	<% end %>

<div class="blog-nav">
	<center>
		<% if @page > 1 %>
		<a href="<%= link_to "/blog?page=" + @page_prev.to_s %>">Previous Page</a>
		<% end %>
		<% 15.times do %>
		&nbsp;
		<% end %>
		<% if @page < @pages %>
		<a href="/blog?page=<%= @page + 1%>">Next Page</a>
		<% end %>
	</center>