如何在编辑模式下绑定下拉控件? [英] How to bind dropdown control in edit mode?

问题描述

我有一个国家列表及其相应的州.

I am having a list of country along with its corresponding states.

现在，当我在编辑模式下打开时，我想在下拉控件中绑定国家和州的值.

Now i want to bind the country and state value in dropdown control when open in edit mode.

这是提琴手的链接:

http://jsfiddle.net/mariapithia/4yj8rprp/9/

     <tr data-ng-repeat="friend in friends">
                        <td><strong>{{ friend.Id }}</strong></td>
                        <td>
                        <p data-ng-hide="friend.editMode">{{ friend.firstname}}</p>
                        <input data-ng-show="friend.editMode" type="text" data-ng-model="friend.firstname" />


                        </td>
                        <td>
                        <p data-ng-hide="friend.editMode">{{ friend.lastname}}</p>
                        <input data-ng-show="friend.editMode" type="text" data-ng-model="friend.lastname" />

                        </td>

                      <td>
                      <p data-ng-hide="friend.editMode">{{ friend.Country.Name }}</p>
                          @*How do i use select here for dropdown for binding country name in my dropdown*@
                @*<select data-ng-show="friend.editMode">
                    <option value="">-- Select Country --</option>
                 </select>  *@
                        </td>
                        <td>
                       <p data-ng-hide="friend.editMode">{{friend.State.Name }}</p>
@*How do i use select here for dropdown for binding state name in my dropdown*@
                @*<select data-ng-show="friend.editMode">
                    <option value="">-- Select State--</option>
                 </select>  *@
                        </td>
                        <td>
                            <p ><a data-ng-click="toggleEdit(friend)" href="javascript:;">Edit</a> | <a data-ng-click="deletefriend(friend)" href="javascript:;">Delete</a></p>
                        </td>
                    </tr>
                </table>

就像我已经使用文本框显示名字和姓氏一样，我想使用下拉菜单在下拉列表中显示我的国家名称和州名，并且如果用户愿意，还允许用户从下拉列表中选择其他国家和州选择.

我从此链接中获取了代码，并添加了一些字段: http://www.c-sharpcorner.com/uploadfile/raj1979/crud-operations-in-mvc-5-using-webapi-with-angularjs/

I have taken code from this link with slight addition of fields: http://www.c-sharpcorner.com/uploadfile/raj1979/crud-operations-in-mvc-5-using-webapi-with-angularjs/

推荐答案

这就是您想要的，您可以对状态&的两个选择框都使用ng-options国家.

Here is what you wanted you could use ng-options for both select box for states & countries.

HTML

<td>
    <p data-ng-hide="friend.editMode">{{ friend.Country.Name }}</p>
    <select data-ng-show="friend.editMode" ng-model="friend.Country" ng-options="country.Name for country in countries track by country.Id "></select>
</td>
<td>
    <p data-ng-hide="friend.editMode">{{friend.State.Name }}</p>
    <select data-ng-show="friend.editMode" ng-model="friend.State" ng-options="state.Name for state in states track by state.Id "></select>
</td>

控制器

$scope.countries = [{
    "Id": 1,
    "Name": "America",
}, {
    "Id": 2,
    "Name": "Australia",
}, {
    "Id": 3,
    "Name": "london",
}];

$scope.states = [{
    Id: 1,
    CountryId: 1,
    Name: "Chicago",
}, {
    Id: 2,
    CountryId: 2,
    Name: "sydney",
}, {
    Id: 3,
    CountryId: 3,
    Name: "abc",
}];

工作中的小提琴

Working Fiddle

注意

按照ID的建议使用ID跟踪来选择加载选项 github问题

Used track by id for selecting option on load as suggest in this github issue

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