javascript - $sce.trustAsHtml 在字符串上失败

Question

我正在尝试在字符串上运行 $sce.trustAsHtml 。它抛出 Error: $sce:itypeString Value is Required for SCE Trust Call即使我在返回字符串的函数上使用它。

这是一个PLUNKER以及导致错误的代码片段。

/*****
 * Should display two images
 * *****/
$scope.image = determineNeverSettleImage("engaging,innovative");
$scope.image = $sce.trustAsHtml($scope.image);

/************
 * This function should:
 *  return 3 images if passed "engaging,innovating,partnering",
 *  return 2 images if passed "engaging,innovating",
 *  return 1 image if passed "engaging"
 **************/
function determineNeverSettleImage(neverSettle) {
  if (neverSettle.split(",").length > 1) {
    neverSettleArray = neverSettle.split(",");
    neverSettleStr = "";
    for (i = 0; i < neverSettleArray.length; i++) {
      if (neverSettleArray[i] == "engaging") {
        neverSettleStr += '<img src="http://lorempixel.com/400/200/" width="56px" height="56px">';
      }
      if (neverSettleArray[i] == "innovating") {
        neverSettleStr += '<img src="http://lorempixel.com/400/200/" width="56px" height="56px">';
      }
      if (neverSettleArray[i] == "partnering") {
        neverSettleStr += '<img src="http://lorempixel.com/400/200/" width="56px" height="56px">';
      }
      if (neverSettleArray[i] == "synergy") {
        neverSettleStr += '<img src="http://lorempixel.com/400/200/" width="56px" height="56px">';
      }
    }
    $scope.test = neverSettleStr;
    neverSettleStr = neverSettleStr + '';
    return neverSettleStr;
  } else {
    switch (neverSettle) {
      case "engaging":
        neverSettle = '<img src="http://lorempixel.com/400/200/" width="56px" height="56px">';
        return neverSettle;
      case "innovating":
        neverSettle = '<img src="http://lorempixel.com/400/200/" width="56px" height="56px">';
        return neverSettle;
      case "partnering":
        neverSettle = '<img src="http://lorempixel.com/400/200/" width="56px" height="56px">';
        return neverSettle;
      case "synergy":
        neverSettle = '<img src="http://lorempixel.com/400/200/" width="56px" height="56px">';
        return neverSettle;
    }
  }
}

难道我的逻辑有问题？或者我是否以某种方式错误地使用了 $sce.trustAsHtml ？

Answer 1

我认为您遇到了问题，因为您为 $scope.image 分配了一个值，然后信任它。尝试:

$scope.image =  $sce.trustAsHtml(determineNeverSettleImage("engaging,innovative"));

顺便说一句，如果您想要提取资源，则应该使用 trustAsResourceUrl，然后您可以在 ngRepeat 中使用它。只是为了让您知道您有选择。

$scope.image = $sce.trustAsResourceUrl();