Ext.define('IW.model.Page', { extend: 'Ext.data.Model', fields: [ { name: 'id', type: 'string', convert: function(value, record) { return record.get('Wiki_id')+'/'+record.get('Page_id'); } }, 'Page_id', 'Wiki_id', 'Path', 'Title', 'Create_user', 'Readacl', 'Writeacl', 'Adminacl', 'Stopinheritation', 'Modified', { name: 'MatchedPermissions', defaultValue: []}, { name: 'index', type: 'int', defaultValue: null, persist: true }, ], idProperty: 'id' });