Ext.onReady(function(){

              Ext.define('User', {

                 extend: 'Ext.data.Model',

                 fields: [

                     { name: 'name', type: 'string' },

                     { name: 'gender', type: 'string'},

                     { name: 'username', type: 'string' },

                     { name: 'f', type: 'string'},

                 ],  

                 validators:{

                     //判断id不得大于1位,

                     //age: { type: 'presence'},

                     name: { type: 'length', min: 2, max: 5},

                     gender: { type: 'inclusion', list: ['Male', 'Female'] },

                     username: { type: 'exclusion', list: ['Admin', 'Operator'] },

                     f: function(value){ alert(value);  },  //自定义方法判断

                 }

             });  

             var instance = Ext.create('User', {

                 name: '1',

                 gender: 'Male',

                 username: 'not Admin',

                 f: 'hello',

             });   

             var validation = instance.getValidation();

             //验证成功返回false 验证失败返回true

             alert(validation.isValid());  //判断验证是否正确

             console.log(validation);

         });