Question

我已定义工厂，如下所示

app.factory('Category', function($resource,$rootScope) {
  return $resource('api/category');
});

这是我的控制者：

app.controller('ChartCtrl4', function ($scope, Category) {
   $scope.category = Category.get();
   $scope.totalCategory = ???      //total:2
});

从Category.get获得的数据：

{
 message: "Category Retrieved Successfully",
 data: {
  total: 2,
  per_page: 10,
  current_page: 1,
  last_page: 1,
  next_page_url: null,
  prev_page_url: null,
  from: 1,
  to: 1,
  data: [
   {
    ...
   },{
    ....
   }
 ]
}
}

我想在我的控制器中访问总计的值，即 2 。

Answer 1

试试这个：

app.controller('ChartCtrl4', function ($scope, Category) {
   Category.get()
    .$promise.then(function(response) {
      $scope.totalCategory = response.data.total;
  });
});

Answer 2

var d = {
 message: "Category Retrieved Successfully",
 data: {
  total: 2,
  per_page: 10,
  current_page: 1,
  last_page: 1,
  next_page_url: null,
  prev_page_url: null,
  from: 1,
  to: 1,
  data: [
   {
    ...
   },{
    ....
   }
 ]
}
}

d.data.total =＆gt; 2

Answer 3

如果我理解正确，那应该是： SELECT F1, MAX(F2) AS F2, F3 FROM MyTable WHERE (F3 & 8) != 0 GROUP BY F1; 也许你不熟悉$scope.category.data.total。这是一篇好文章：http://www.webmonkey.com/2010/02/get_started_with_json/

Answer 4

$ scope.category.data.total将获取属性，但检查以确保该属性实际存在并在访问之前具有值是明智的。

$scope.totalCategory = 0;

if ($scope.category && $scope.category.data && $scope.category.data.total) {
  $scope.totalCategory = $scope.category.data.total;
}

为了安全起见。

从json对象获取特定参数值

4 个答案: