Getting pagination information from headers with Backbone

backbone-monkey-patch.js

// Get the pagination information from the response headers

// Wrap Backbone.sync to save the pagination header on the response object.
Backbone.sync_with_pagination = function(method, model, success, error) {
  var success_with_pagination = function(resp, status, xhr) {
    resp.next_page = xhr.getResponseHeader('X-Next-Page');
    return success(resp);
  }
  return Backbone.sync_without_pagination(method, model, success_with_pagination, error);
};
Backbone.sync_without_pagination = Backbone.sync;
Backbone.sync = Backbone.sync_with_pagination;


// Wrap Collection.refresh to transfer the pagination info from the response object to the collection.
Backbone.Collection.prototype.refresh_with_pagination = function(models, options) {
  this.next_page = models.next_page;
  return this.refresh_without_pagination(models, options);
};
Backbone.Collection.prototype.refresh_without_pagination = Backbone.Collection.prototype.refresh;
Backbone.Collection.prototype.refresh = Backbone.Collection.prototype.refresh_with_pagination;