5

下面的控制器为视图提供表格和表单。表的相关部分是：

<tr ng-repeat="obj in tab.col | filter:filterObj" ng-click="select(obj)" ng-class="isSelected(obj)">

如果点击了一行，表单会显示 obj 的详细信息（其模型是 tab.obj），您可以对其进行编辑。当用户在表单字段中修改 obj 时，该表会适当地获得更新，但 firebase 不会获得任何更新，而是添加新对象（这是通过 array.push(obj) 完成的）。

define(['app'], function(app) {
app.controller('LinksCtrl',['$scope', '$filter', '$http','angularFire','angularFireAuth', function($scope,$filter,$http, angularFire, angularFireAuth) {
$scope.links = {};
$scope.tabs = [];

var url = "https://<url>.firebaseio.com/links";
angularFireAuth.initialize(url, {scope: $scope, name: "user", path: "/"});
var promise = angularFire(url, $scope, 'links', {})

$scope.select = function (item) {
  for(i in $scope.tabs) {
    var tab = $scope.tabs[i];
    if (tab.active) {
      tab.obj = item;
      if (tab.obj.selected) {
        tab.obj.selected = ! tab.obj.selected;
      } else {
        tab.obj.selected = true;
        // $scope.$apply();
      }
    }
  }
};

$scope.isSelected = function(obj) {
  if (obj.selected && obj.selected === true) {
   return "active"; 
  }
  return "";
}


promise.then(function() {

  $scope.tabs.push({
    title: 'links',
    disabled: false,
    active: false,
    col: $scope.links.open, //this is an array of objects
    obj: {}
  });

  $scope.tabs[0].active = true;

  for(i in $scope.tabs) {
    var tab = $scope.tabs[i];
    tab.actions = app.actions();

    // app.actions returns an array with more objects like the following doing CRUD and other basic stuff
    tab.actions.push({
      name: 'Delete link',
      icon: 'icon-minus',
      cond: function(tab) { if ('selected' in tab.obj) { return tab.obj.selected}; return false; },
      func: function(tab) {
        // splice tab.col or whatever modification
      }
    });
  };
});
  }]);

});

我怎样才能使这样的工作？是否应该通过集合转向手动同步？使用 console.log 进行调试显示对象 obj 在代码的所有阶段都具有它应该具有的内容（它具有原型、哈希码等），只是 firebase 没有得到更新。

更新：

我有一个可行的解决方案。似乎这是一个绑定问题，或类似的问题，但我不确定发生了什么。tabs[i].col = $scope.links.i 的分配看起来像是罪魁祸首（在这种情况下 i = 'open' :-?。这可能是我对角度的使用。

controller scope ------

    // get the firebase data and store it in 
    var promise = angularFire(url, $scope, 'links', {})

    // build the tabs structure, where tabs[i].col = $scope.links.i

    // build actions for each tab

    // create an empty tabs[i].obj to use in the form model

ng-repeat scope -------

    // iterate over the tab structure
    <tab ng-repeat="tab in tabs" heading="{{tab.title}}" active="tab.active" disabled="tab.disabled">

ng-repeat scope --------

    // Iterate over the elements, so we can select one, and edit it, updating firebase
    // If we iterate over tab.col, firebase does not get the updates, but If we iterate over
    // the original $scope.links variable, it works as expected

    <tr ng-repeat="obj in links[tab.title] | filter:filterObj | orderBy: 'date':true" ng-click="select(obj)" ng-class="isSelected(obj)">
4

1 回答 1

1

我有一个可行的解决方案。似乎这是我这边的一个绑定问题。tabs[i].col = $scope.links.i 的分配看起来像是罪魁祸首（在这种情况下 i = 'open' :-?。这可能是我对角度的使用。

解决方法是不使用tabs[i].col，而是使用$scope.links，即使用$scope 变量而不是对$scope 变量的引用。

controller scope ------

    // get the firebase data and store it in 
    var promise = angularFire(url, $scope, 'links', {})

    // build the tabs structure, where tabs[i].col = $scope.links.i

    // build actions for each tab

    // create an empty tabs[i].obj to use in the form model

ng-repeat scope -------

    // iterate over the tab structure
    <tab ng-repeat="tab in tabs" heading="{{tab.title}}" active="tab.active" disabled="tab.disabled">

ng-repeat scope --------

    // Iterate over the elements, so we can select one, and edit it, updating firebase
    // If we iterate over tab.col, firebase does not get the updates, but If we iterate over
    // the original $scope.links variable, it works as expected

    <tr ng-repeat="obj in links[tab.title] | filter:filterObj | orderBy: 'date':true" ng-click="select(obj)" ng-class="isSelected(obj)">
于 2014-08-18T11:36:24.720 回答