Question

我正在尝试使用ng-repeat来遍历一个对象数组，并使用每个对象ID来查找绑定到清单模型的数据。我正在处理的项目中有以下javascript对象：

{
diagnosis: {
            mainfractures: [
                        {
                            id: "metacarpal",
                            textinput_id: "metacarpal_text",
                            title: "5th Metacarpal",
                        },
                        {
                            id: "proximal_phalanx",
                            textinput_id: "proximal_phalanx_text",
                            title: "Proximal Phalanx",
                        },
                        {
                            id: "middle_phalanx",
                            textinput_id: "middle_phalanx_text",
                            title: "Middle Phalanx",
                        },
                        {
                            id: "distal_phalanx",
                            textinput_id: "distal_phalanx_text",
                            title: "Distal Phalanx",
                        },
                        {
                            id: "scaphoid_fracture",
                            textinput_id: "scaphoid_fracture_text",
                            title: "Scaphoid Fracture",
                        }
          ]
   }}

以下是我的清单模型的内容。当用户选择一个复选框时，一个值被绑定到与该断裂相关联的数组。

$scope.checklists = {
                    "diagnosis": {
                         metacarpal: [],
                         proximal_phalanx: [],
                         middle_phalanx: [],
                         distal_phalanx: [],
                         scaphoid_fracture: []
                    }
                }

Checklist Image Example

一旦用户做出与上图相似的选择，掌骨核对表模型应如下所示：掌骨：[＆＃34; head＆＃34;]

我尝试做的是通过fracture.id列出bulletpoint中的每个用户选择。我试图用这段代码完成它，但到目前为止它只列出了断裂标题。尝试将fracture.id插入到ng-repeat中是一个问题吗？

<div ng-repeat="fracture in diagnosis.mainfractures">
          <div > <!--ng-if="checklists['diagnosis'][fracture.id] > 0"-->
            <h4>{{ fracture.title }}</h4>
            <div class="row">
              <ul type="disc">
                <li ng-repeat="selection in checklists['diagnosis'][fracture.id]">
                  &bull; {{ capitalize(selection) }}
                </li>
              </ul>
            </div>
        </div>
      </div>

Answer 1

调整了一下代码：

大写 - ＆gt; 大写（https://docs.angularjs.org/api/ng/filter/uppercase）
一些语法错误

但似乎ng-repeat中的动态对象键访问非常正确

https://jsbin.com/rodecosoyo/1/edit?html,js,output

角度应用

var app = angular.module('arrayid', []);

app.controller('arrayContainerCtrl', function($scope) {
  $scope.diagnosis = {
    mainfractures: [{
      id: "metacarpal",
      textinput_id: "metacarpal_text",
      title: "5th Metacarpal",
    }, {
      id: "proximal_phalanx",
      textinput_id: "proximal_phalanx_text",
      title: "Proximal Phalanx",
    }, {
      id: "middle_phalanx",
      textinput_id: "middle_phalanx_text",
      title: "Middle Phalanx",
    }, {
      id: "distal_phalanx",
      textinput_id: "distal_phalanx_text",
      title: "Distal Phalanx",
    }, {
      id: "scaphoid_fracture",
      textinput_id: "scaphoid_fracture_text",
      title: "Scaphoid Fracture",
    }]
  };

  $scope.checklists = {
    "diagnosis": {
      metacarpal: ['1', '2'],
      proximal_phalanx: ['2', '3'],
      middle_phalanx: ['3'],
      distal_phalanx: ['4'],
      scaphoid_fracture: ['5']
    }
  };

});

标记：

<body ng-app='arrayid' ng-controller='arrayContainerCtrl'>
  <div ng-repeat="fracture in diagnosis.mainfractures">
      <h4>{{ fracture.title }}</h4>
      <div class="row">
        <ul type="disc">
          <li ng-repeat="selection in checklists['diagnosis'][fracture.id]">
            &bull; {{ selection | uppercase }}
          </li>
        </ul>
      </div>
  </div>
</body>

Answer 2

根据您提供的代码，我不得不说您的问题实际上是由于JS语法错误造成的。你在每个对象项后都缺少逗号，这里有一个随机双引号scaphoid_fracture"[]。

$scope.checklists = {
                "diagnosis": {
                     metacarpal: []
                     proximal_phalanx: []
                     middle_phalanx: []
                     distal_phalanx: []
                     scaphoid_fracture"[]
                }
            }

这是一个完全正常的jsfiddle

如何使用ng-repeat迭代使用动态键关联的数组

2 个答案: