Ng重复整数值

Question

我试图ng-repeat在一个div应该包含星形图像的地方使用,JSON中的每个饼都有rating1-5 的属性,我想用这个值来圈出x个星星.我有点工作,但它的方式存在缺陷,我无法对数组进行重新排序,并使星星跟随列表中的正确项目,因为我[$index]用来跟踪迭代.

我的解决方案也相当丑陋,因为我创建的数组具有与rating属性值一样多的索引占位符,然后将其推入数组以循环出适当数量的图像.我想有一个更优雅的解决方案.

如何在不使用的情况下解决这个问题[$index]？

JSON的片段:

{"pies": [
    ...

    {
        "name": "Blueberry pie", 
        "imageUrl": "img/blueberrypie.png", 
        "id": "1",
        "rating": "5", //Ng-repeat depending on this value
        "description": "Blueberry pie is amazing."
    },

    ...
]}

我的控制器:

pieShopApp.controller('shopCtrl', ['$scope', '$http', '$routeParams', function ($scope, $http, $routeParams) {
    $scope.pieId = $routeParams.pieId,
    $scope.sortingOptions = ['A-Z', 'Rating'],
    $scope.sortingValues = ['name', 'rating'],
    $scope.ratings = [],
    $http.get('jsons/pies.json')
         .success(function(data, status) {
            $scope.pies = data;

            for (i = 0; i < $scope.pies.pies.length; i++) {

                switch ($scope.pies.pies[i].rating) {

                    case "1": $scope.ratings.push(["1"]); break;

                    case "2": $scope.ratings.push(["1", "2"]); break;

                    case "3": $scope.ratings.push(["1", "2", "3"]); break;

                    case "4": $scope.ratings.push(["1", "2", "3", "4"]); break;

                    case "5": $scope.ratings.push(["1", "2", "3", "4", "5"]); break;
                }
            }
            console.log($scope.ratings);
         })
         .error(function(status) {
            console.log(status);
         })
}]);

包含饼图项的列表:

<div id="pie-list-wrapper">
    <ul class="nav">
        <a href="#/pies/pieid" ng-repeat="pie in pies.pies | filter:query | orderBy:orderProp">
            <li class="list-item rounded-corners box-shadow">
                <aside>
                    <img src="{{pie.imageUrl}}" no-repeat alt="Image of the pie">
                </aside>
                <header>
                    <h1 ng-bind="pie.name" id="item-name" class="bold-text"></h1>
                </header>
                <article>
                    <span ng-bind="pie.description" id="item-desc"></span>
                </article>
                <footer id="item-rating">
                    <div ng-repeat="rating in ratings[$index]" class="rating-box"></div> //Contains the stars
                </footer>
            </li>
        </a>
    </ul>
</div>

结果:

Answer 1

结帐这个

<div ng-app='myApp' ng-controller="Main">
  <span ng-repeat="n in range('5')">Start{{$index}} &nbsp;&nbsp;</span>
</div>

$scope.range = function(count){

  var ratings = []; 

  for (var i = 0; i < count; i++) { 
    ratings.push(i) 
  } 

  return ratings;
}

将您的HTML更改为以下

<div id="pie-list-wrapper">
  <ul class="nav">
    <a href="#/pies/pieid" ng-repeat="pie in pies.pies | filter:query | orderBy:orderProp">
      <li class="list-item rounded-corners box-shadow">
        <aside>
          <img src="{{pie.imageUrl}}" no-repeat alt="Image of the pie">
        </aside>
        <header>
          <h1 ng-bind="pie.name" id="item-name" class="bold-text"></h1>
        </header>
        <article>
          <span ng-bind="pie.description" id="item-desc"></span>
        </article>
        <footer id="item-rating">
          <div ng-repeat="start in range(pie.rating)" class="rating-box"></div> //Contains the stars
        </footer>
      </li>
    </a>
  </ul>
</div>