如何在ng-repeat指令中正确使用ui-select

时间:2016-02-09 15:39:03

标签: angularjs angularjs-ng-repeat ng-repeat ui-select

我有一个ui-select,它包含在ng-repeat指令中。由于它们具有相同的范围,因此我遇到了几个问题:

  • 在第一个选择第二个选择值后,已经预先填写了我输入的内容。

  • 占位符已隐藏,仅在选择字段处于焦点时显示。

这是html:

<div ng-repeat="repeat in repeats">
  <p>Selected: {{repeat.id.formatted_address}}</p>
  <ui-select ng-model="repeat.id"
             theme="bootstrap"
             ng-disabled="disabled"
             reset-search-input="false"
             style="width: 300px;">
    <ui-select-match placeholder="Enter an address...">{{$select.selected.formatted_address}}</ui-select-match>
    <ui-select-choices repeat="address in addresses track by $index"
                       refresh="refreshAddresses($select.search)"
                       refresh-delay="0">
      <div ng-bind-html="address.formatted_address | highlight: $select.search"></div>
    </ui-select-choices>
  </ui-select>
</div>

问题是使用多个ui-select指令来防止这些问题的正确方法是什么?

Demo Plunker

2 个答案:

答案 0 :(得分:2)

您可以为地址查找创建指令,并将查找逻辑移动到指令控制器中。每个指令实例都有自己的控制器实例,因此它有自己的$scope.addresses实例(防止预先填充第二个选择以及第一个选择的行为)。

<div ng-repeat="repeat in repeats">
  <address-selector repeat="repeat"></address-selector>
</div>

app.directive('addressSelector', function() {
  return {
    restrict: 'E',
    scope: {
      repeat: '='
    },
    template:
    '<p>Selected: {{repeat.id.formatted_address}}</p>' +
    '<ui-select ng-model="repeat.id"' +
    '    theme="bootstrap"' +
    '    ng-disabled="disabled"' +
    '    reset-search-input="false"' +
    '    style="width: 300px;">' +
    '<ui-select-match placeholder="Enter an address...">{{$select.selected.formatted_address}}</ui-select-match>' +
    '<ui-select-choices repeat="address in addresses track by $index"' +
    '    refresh="refreshAddresses($select.search)"' +
    '    refresh-delay="0">' +
    '  <div ng-bind-html="address.formatted_address | highlight: $select.search"></div>' +
    '</ui-select-choices>' +
    '</ui-select>',
    controller: function ($scope, $http) {
      $scope.refreshAddresses = function(address) {
        var params = {address: address, sensor: false};
        return $http.get(
          'http://maps.googleapis.com/maps/api/geocode/json',
          {params: params}
        ).then(function(response) {
          $scope.addresses = response.data.results
        });
      };
    }
  };
}); 

要显示ui-select占位符,您应该避免初始化模型(repeat.id),或将其设置为null

app.controller('DemoCtrl', function($scope) {
  $scope.repeats=[{}, {}];
});

Updated Plunker

答案 1 :(得分:0)

您也可以执行以下操作。数组中的每个对象都有其自己的selected项目。要添加新重复,您只需$scope.repeats.push({}),而要删除重复,请$scope.repeats.splice(index, 1);。如果要将$scope.repeats推送到API,请记住使用angular.toJson($scope.repeats)而不是JSON.stringify($scope.repeats)

如果仅具有该数据,则不需要

原因selected子项。我有更多物品,所以这对我很有用

file.js

$scope.repeats=[{}, {}];

file.html

<div ng-repeat="repeat in repeats">
  <p>Selected: {{repeat.selected.formatted_address}}</p>
  <ui-select ng-model="repeat.selected">
    <ui-select-match placeholder="Enter an address...">
      {{$select.selected.formatted_address}}
    </ui-select-match>
    <ui-select-choices repeat="address in addresses track by $index">
      <div ng-bind-html="address.formatted_address | highlight: $select.search"></div>
    </ui-select-choices>
  </ui-select>
</div>

输出数据可能如下所示:

$scope.repeats == [
    {
        selected: {
            formatted_address: "98 Hubin Middle Rd"
        }
    },
    {
        selected: {
            formatted_address: "100 Rogwart Way"
        }
    }
];