Question

我实现了这个简单的功能来检测Backbone模型中的任何不需要或未指定的属性：

var Underscore = require( '/usr/local/lib/node_modules/underscore' ),
    Backbone = require( '/usr/local/lib/node_modules/backbone' ),
    Validation = require( '/usr/local/lib/node_modules/backbone-validation' );

Underscore.extend( Backbone.Model.prototype, Validation.mixin );

var User = Backbone.Model.extend( {
   validation: {
        firstname: {
            minLength: 1,
            maxLength: 20,
            required: true
        },
        lastname: {
            minLength: 1,
            maxLength: 20,
            required: true
        }
    }, 
    ...

    isAttributeAccepted: function( attr ) {
        var retval = false;
        for ( var property in this.validation ) {
            if ( attr == property ) {
                retval = true;
                break;
            }
        }
        return retval;
    },
    ...

使用中：

var user = new User();
var isDesired = user.isAttributeAccepted( "nop" );
console.log( isDesired ) // false;

我之所以这样做是因为我在Backbone.validation中找不到任何替换它的东西。我怎么能用首选的方法替换这个代码来使用Backbone.validation（github thederson.com）？

感谢。

Answer 1

我还没有找到backbone.validation中的方法，但您可以更轻松地编写代码：

    isAttributeAccepted: function(attr) {
        return _.has(this.validation, attr);
    },

检测任何不需要的属性的Backbone模型验证

1 个答案: