communities_controller.rb

class CommunitiesController < ApplicationController
  
  # ...
  
  def show
    @community = Community.find(params[:id])
    @users = @community.users
    @ressources = Ressource.paginate(:page => params[:page], :per_page => 5)
  end

  # ...  
 
end

endless_scroll.js

var currentPage = 1;
var intervalID = -1000;

function checkScroll() {
  if (nearBottomOfPage()) {
    currentPage++;
  console.log("endless request "+ currentPage);
    jQuery.ajax('?page=' + currentPage, {asynchronous:true, evalScripts:true, method:'get', success: function(data, textStatus, jqXHR) {
		$('.ressources').append(jQuery(data).find('.ressources').html());
		if(typeof jQuery(data).find('.ressources').html() == 'undefined' || jQuery(data).find('.ressources').html().trim().length == 0){
			clearInterval(intervalID);
		}
	},});
  }
}

function nearBottomOfPage() {
  return scrollDistanceFromBottom() < 50;
}

function scrollDistanceFromBottom(argument) {
  return pageHeight() - (window.pageYOffset + self.innerHeight);
}

function pageHeight() {
  return Math.max(document.body.scrollHeight, document.body.offsetHeight);
}

$('document').ready(function(){
	intervalID = setInterval(checkScroll, 250);
})

show.html.erb

<div class="row">
  <div class="span12">
		<div class="box">
			<h1>Board</h1>
		</div>
	</div>
</div>


<div class="row">
	<div class="span12">
		<div class="ressources">
		    <%= render :partial => 'ressource', :collection => @ressources %>
		</div>		
	</div>	
</div>