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我是新來的平均值，我試圖做一個簡單的CRUD應用程序。我在我的_id上收到一個未定義的錯誤，我不明白爲什麼。此變量的作用withevery其他功能我調用它。希望有人可以提供幫助。我正在上線117錯誤在我controller.js文件Node/AngularJS - TypeError：無法讀取未定義的屬性'_id'。
這裏是我的應用程序的代碼controller.js
todoApp.controller('TodoCtrl', function($rootScope, $scope, todosFactory) {
$scope.todos = [];
$scope.isEditable = [];
// get all Todos on Load
todosFactory.getTodos().then(function(data) {
$scope.todos = data.data;
});
// Save a Todo to the server
$scope.save = function($event) {
if ($event.which == 13 && $scope.todoInput) {
todosFactory.saveTodo({
"todo": $scope.todoInput,
"isCompleted": false
}).then(function(data) {
$scope.todos.push(data.data);
});
$scope.todoInput = '';
}
};
//update the status of the Todo
$scope.updateStatus = function($event, _id, i) {
var cbk = $event.target.checked;
var _t = $scope.todos[i];
todosFactory.updateTodo({
_id: _id,
isCompleted: cbk,
todo: _t.todo
}).then(function(data) {
if (data.data.updatedExisting) {
_t.isCompleted = cbk;
} else {
alert('Oops something went wrong!');
}
});
};
// Update the edited Todo
$scope.edit = function($event, i) {
if ($event.which == 13 && $event.target.value.trim()) {
var _t = $scope.todos[i];
todosFactory.updateTodo({
_id: _t._id,
todo: $event.target.value.trim(),
isCompleted: _t.isCompleted
}).then(function(data) {
if (data.data.updatedExisting) {
_t.todo = $event.target.value.trim();
$scope.isEditable[i] = false;
} else {
alert('Oops something went wrong!');
}
});
}
};
// Delete a Todo
$scope.delete = function(i) {
todosFactory.deleteTodo($scope.todos[i]._id).then(function(data) {
if (data.data) {
$scope.todos.splice(i, 1);
}
});
};
});
todoApp.controller('TodoCtrl', function($rootScope, $scope, todosFactory) {
$scope.todos = [];
$scope.isEditable = [];
// get all Todos on Load
todosFactory.getTodos().then(function(data) {
$scope.todos = data.data;
});
// Save a Todo to the server
$scope.save = function($event) {
if ($event.which == 13 && $scope.todoInput) {
todosFactory.saveTodo({
"todo": $scope.todoInput,
"isCompleted": false
}).then(function(data) {
$scope.todos.push(data.data);
});
$scope.todoInput = '';
}
};
//update the status of the Todo
$scope.updateStatus = function($event, _id, i) {
var cbk = $event.target.checked;
var _t = $scope.todos[i];
todosFactory.updateTodo({
_id: _id,
isCompleted: cbk,
todo: _t.todo
}).then(function(data) {
if (data.data.updatedExisting) {
_t.isCompleted = cbk;
} else {
alert('Oops something went wrong!');
}
});
};
// Update the edited Todo
$scope.edit = function($event, i) {
if ($event.which == 13 && $event.target.value.trim()) {
var _t = $scope.todos[i];
todosFactory.updateTodo({
_id: _t._id,
todo: $event.target.value.trim(),
isCompleted: _t.isCompleted
}).then(function(data) {
if (data.data.updatedExisting) {
_t.todo = $event.target.value.trim();
$scope.isEditable[i] = false;
} else {
alert('Oops something went wrong!');
}
});
}
};
// Delete a Todo
$scope.delete = function(i) {
todosFactory.deleteTodo($scope.todos[i]._id).then(function(data) {
if (data.data) {
$scope.todos.splice(i, 1);
}
});
};
});
纔是情況下，誤差值在任我factory.js代碼或HTML ，我將包括這兩個。 這裏是factory.js代碼：
todoApp.factory('todosFactory', function($http){
var urlBase = '/api/todos';
var _todoService = {};
_todoService.getTodos = function(){
return $http.get(urlBase);
};
_todoService.saveTodo = function(todo){
return $http.post(urlBase, todo);
};
_todoService.updateTodo = function(todo) {
return $http.put(urlBase, todo);
};
_todoService.deleteTodo = function(id){
return $http.delete(urlBase + '/' + id);
};
return _todoService;
});
這裏的HTML部分使用的控制器和工廠：
<div class="container" ng-controller="TodoCtrl">
<div class="row col-md-12">
<div>
<input type="text" class="form-control input-lg" placeholder="Enter a todo" ng-keypress="save($event)" ng-model="todoInput">
</div>
</div>
<div class="row col-md-12 todos">
<div class="alert alert-info text-center" ng-hide="todos.length > 0">
<h3>Nothing Yet!</h3>
</div>
<div ng-repeat="todo in todos" class=" col-md-12 col-sm-12 col-xs-12" ng-class="todo.isCompleted ? 'strike' : ''">
<div class="col-md-1 col-sm-1 col-xs-1">
<input type="checkbox" ng-checked="todo.isCompleted" ng-click="updateStatus($event, todo._id, $index)">
</div>
<div class="col-md-8 col-sm-8 col-xs-8">
<span ng-show="!isEditable[$index]">{{todo.todo}}</span>
<input ng-show="isEditable[$index]" type="text" value="{{todo.todo}}" ng-keypress="edit($event)">
<input ng-show="isEditable[$index]" type="button" class="btn btn-warning" value="Cancel" ng-click="isEditable[$index] = false" />
</div>
<div class="col-md-3 col-sm-3 col-xs-3" >
<input type="button" class="btn btn-info" ng-disabled="todo.isCompleted" class="pull-right" value="edit" ng-click="isEditable[$index] = true" />
<input type="button" class="btn btn-danger" class="pull-right" value="Delete" ng- click="delete($index)" />
</div>
</div>
</div>