gistfile1.txt

// ..........................................
  // REFRESH

  refreshRecords: function(records, options) {
    if (!records || records.length == 0) return ;
    if (!options) options = {} ;

    records = records.byResourceURL() ; // group by resource.
    for(var resource in records) {
      if (resource == '*') continue ;

      var curRecords = records[resource] ;

      // collect resource ids, sort records into hash, and get cacheCode.
      var cacheCode = null ; var ids = [] ;
      var primaryKey = curRecords[0].get('primaryKey') ; // assumes all the same
      curRecords.each(function(r) {
        cacheCode = cacheCode || r._cacheCode ;
        var key = r.get(primaryKey);
        if (key) { ids.push(key); }
      });

      var context = {
        recordType: curRecords[0].recordType, // default record type
        onSuccess: options.onSuccess,
        onFailure: options.onFailure
      };

      var params = {
        requestContext: context,
        cacheCode: ((cacheCode=='') ? null : cacheCode),
        _onSuccess: this._refreshSuccess.bind(this),
        _onFailure: this._refreshFailure.bind(this)
      };

      if (ids.length == 1 && curRecords[0].refreshURL) params['url'] = curRecords[0].refreshURL;

      // issue request
      this.request(resource, this._refreshAction, ids, params, this._refreshMethod) ;
    }
  },

  _refreshAction: 'show',
  _refreshMethod: 'get',

  // This method is called when a refresh is successful.  It expects an array
  // of hashes, which it will convert to records.
  _refreshSuccess: function(transport, cacheCode, context) {
    var json = eval('json='+transport.responseText) ;
    if (!json) { console.log('invalid json!'); return; }    
    if (json.records) this.refreshRecordsWithData(json.records, context.recordType, cacheCode, true);
    if (context.onSuccess) context.onSuccess(transport, cacheCode) ;
  },

  _refreshFailure: function(transport, cacheCode, context) {
    console.log('refreshFailed!') ;
    if (context.onFailure) context.onFailure(transport, cacheCode) ;
  },