gistfile1.js

    var Campaign = Backbone.Model.extend(
	{
	    idAttribute: "_id",
	    urlRoot:"http://localhost:5984/campaigns"
	});
    var Campaigns = Backbone.Collection.extend(
	{
	    model: Campaign,
	    url:"http://localhost:5984/campaigns/_all_docs",
	    parse: function(response) {
		return _(response.rows).chain()
		    .pluck('id')
		    .reject(function(id){return id.search('_design') == 0;})
		    .map(function(id){return{_id:id};})
		    .value();
	    }
	});
    var campaignList = new Campaigns();
    campaignList.fetch(
	{success:function(model,resp){
	     console.log("model");
	     console.log(model);
	     console.log("resp");
	     console.log(resp);
	     _.each(model,function(model)
		    {
			model.fetch({success:console.log});
		    });
	 }});