MVVM架构~knockoutjs系列之包括区域级联列表的增删改

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这个例子我做了几次,之前总是有BUG,目前测试后,确定没有BUG才发上来的,主要功能是实现“我的银行”模块的增删改的功能,这个里面包括了级联列表的区域选择,这部分是难点,在开发过程中,我们应该知道一个概念,在knockoutjs里,如果你的select被绑定了optionsValue属性,那么它将存储这个普通的字符,而如果你没有设置optionsValue,那么它存储的是JS对象。

Html代码

MVVM架构~knockoutjs系列之包括区域级联列表的增删改
<script src="/Scripts/areaData.js"></script>

<div id="bankDiv">
    <div data-bind="foreach:bankList">
        <ul style="float: left;">
            <li><b>银行开户名:</b><span data-bind="text:BankAccountName"></span></li>
            <li><b>开户行所在城市:</b>
                <select disabled="disabled" data-bind="
                                                 options: areaData,
                                                 optionsText: Name,
                                                 value:Province,
                                                 optionsCaption: 选择省份‘">
                </select>
                <span data-bind="with:Province">
                    <select disabled="disabled" data-bind="
                                                     visible:$parent.Province,
                                                     options: Sons,
                                                     optionsText: Name,
                                                     value:$parent.City,
                                                     optionsCaption: 选择城市‘">
                    </select>
                </span>

                <span data-bind="with:City">
                    <select disabled="disabled" data-bind="
                                                    visible:$parent.City,
                                                    options: Sons,
                                                    optionsText: Name,
                                                    value:$parent.District,
                                                    optionsCaption: 选择区县‘">
                    </select>
                </span>
            </li>
            <li><b>银行名称:</b><span data-bind="text:BankName"></span></li>
            <li><b>支行名称:</b><span data-bind="text:BankAddress"></span></li>
            <li><b>银行账号:</b><span data-bind="text:BankAccountNumber"></span></li>
            <li><a href="javascript:;" data-bind="click:$parent.removeLine">删除</a>&nbsp;&nbsp;<a href="javascript:;" data-bind="click:$parent.edit">编辑</a></li>
        </ul>
    </div>
    <div style="clear: both;"><a href="javascript:;" data-bind="click:add">添加银行</a></div>
    <div data-bind="with:selectItem,visible:editing()">
        <ul>
            <li><b>正在<span data-bind="if:UserBankID==0">新建</span><span data-bind="if:UserBankID>0">编辑</span>银行</b></li>
            <li>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;银行开户名:<input type="text" data-bind="value:BankAccountName" /></li>
            <li>开户行所在城市:
                              <select data-bind="
                                 options: areaData,
                                 optionsText: Name,
                                 value:Province,
                                 optionsCaption: 选择省份‘">
                              </select>
                <span data-bind="with:Province">
                    <select data-bind="
                                   visible:$parent.Province,
                                   options: Sons,
                                   optionsText: Name,
                                   value:$parent.City,
                                   optionsCaption: 选择城市‘">
                    </select>
                </span>

                <span data-bind="with:City">
                    <select data-bind="
                                  visible:$parent.City,
                                  options: Sons,
                                  optionsText: Name,
                                  value:$parent.District,
                                  optionsCaption: 选择区县‘">
                    </select>
                </span>

            </li>
            <li>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;银行名称:<input type="text" data-bind="value:BankName" /></li>
            <li>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;支行名称:<input type="text" data-bind="value:BankAddress" /></li>
            <li>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;银行账号:<input type="text" data-bind="value:BankAccountNumber" /></li>
        </ul>
        <input type="button" data-bind="click:$parent.save" value="保存" />
        <input type="button" data-bind="click:$parent.cancle" value="取消" />
    </div>
</div>
MVVM架构~knockoutjs系列之包括区域级联列表的增删改

JS代码,注意,为了测试方便,我将AJAX与数据交换的代码全都注释了

MVVM架构~knockoutjs系列之包括区域级联列表的增删改
<script type="text/ecmascript">
    //银行对象
    var Bank = function (
        UserBankID,
        Province,
        City,
        District,
        BankName,
        BankAccountName,
        BankAccountNumber,
        BankAddress,
        IsAdd
        ) {
        this.UserBankID = UserBankID;
        this.Province = ko.observable(Province);
        this.City = ko.observable(City);
        this.District = ko.observable(District);
        this.BankName = BankName;
        this.BankAccountName = BankAccountName;
        this.BankAccountNumber = BankAccountNumber;
        this.BankAddress = BankAddress;
        this.IsAdd = IsAdd;
    }
 
    //我的银行操作
    var bankEditor = function () {
        var self = this;

        /*为数据库中的值对象初始化为Bank对象*/
        var selArr = [];
        selArr.push(new Bank(1, areaData[0], areaData[0].Sons[0], areaData[0].Sons[0].Sons[0], "银行名称", "开户名", "账号", "支行名称", false));
        selArr.push(new Bank(1, areaData[1], areaData[1].Sons[1], areaData[1].Sons[1].Sons[1], "银行名称", "开户名", "账号", "支行名称", false));
        /*初始化时,需要将数据源数值转换为对象*/
        self.bankList = ko.observableArray(selArr);

        self.selectItem = ko.observable();
        self.editing = ko.observable(false);

        //移除同时提交
        self.removeLine = function (o) {
            //$.ajax({
            //    url: "/CommonData/DelUserBank",
            //    type: "POST",
            //    data: { UserBankID: o.UserBankID },
            //    success: function (data) {
            self.bankList.remove(o);
            //    }
            //});
        }
        //添加
        self.add = function () {
            self.editing(true);
            self.selectItem(new Bank(0, "", "", "", "银行名称", "开户名", "账号", "支行名称", true));
        };
        //编辑
        self.edit = function (o) {
            self.editing(true);
            self.bankList.remove(o)//将上面的实体移除
            o.IsAdd = false;
            self.selectItem(o);
        };

        //post
        self.save = function (o) {
            /*数据传递时,使用字符串或者数值,而在knockoutjs显示时,使用完整对象*/
             @*$.ajax({
                url: "/CommonData/UpdateUserBank",
                type: "POST",
                data: {
                    userID: @Model.UserInfoID,
                    UserBankID: o.UserBankID,
                    Province: o.Province().Name,
                    City: o.City().Name,
                    District: o.District().Name,
                    BankName: o.BankName,
                    BankAccountName: o.BankAccountName,
                    BankAccountNumber: o.BankAccountNumber,
                    BankAddress: o.BankAddress
                },
                success: function (data) {*@
            self.editing(false);
            /*地域显示为文本*/
            self.bankList.push(o);//将编辑后的实体添加
            //    }
            //});
        };

        self.cancle = function (o) {
            if (!o.IsAdd)
                self.bankList.push(o);
            self.editing(false);
        };

    }

    var bankModel = new bankEditor()
    ko.applyBindings(bankModel, document.getElementById("bankDiv"));

</script>
MVVM架构~knockoutjs系列之包括区域级联列表的增删改

截图如下

MVVM架构~knockoutjs系列之包括区域级联列表的增删改

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MVVM架构~knockoutjs系列之包括区域级联列表的增删改

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