javascript - 使用 AngularJS 编辑用户 LocalStorage
问题描述
我正在创建一个网页，我可以在其中使用 AngularJS 上的 localStorage 执行 CRUD 功能。到目前为止，我能够添加、删除用户并将它们保存到 localStorage。
但我无法将编辑后的用户详细信息保存在 localStorage 中。“ $scope.selectUser = function (user) ”是我用来编辑用户的函数。编辑用户有效，但他们在网页刷新时被删除。这意味着已编辑用户的数据没有被存储。找人指导我。提前致谢
var myApp = angular.module("myApp", []);
myApp.controller("myController", function ($scope) {
console.log("in controller...");
$scope.newUser = {};
$scope.info = "";
if (localStorage.getItem("users") === null) {
$scope.users = [
{ email: "John@yahoo.com", firstName: "John", lastName: "Doe", contact: "281-283-2480", role: "Supplier-Admin", company: "Apple" },
{ email: "Rick@yahoo.com", firstName: "Rick", lastName: "Fraiser", contact: "987-283-2489", role: "Supplier-User", company: "Apple" },
{ email: "Sam@yahoo.com", firstName: "Sam", lastName: "Tarly", contact: "456-786-2480", role: "BuyerAdmin", company: "Samsung" }
];
localStorage.setItem("users", JSON.stringify($scope.users));
} else {
$scope.users = JSON.parse(localStorage.getItem("users"));
}
$scope.saveUser = function () {
console.log("Saving...");
$scope.users.push($scope.newUser);
$scope.info = "New User Added Successfully!";
$scope.newUser = {};
localStorage.setItem("users", JSON.stringify($scope.users));
//localStorage.setItem("email", $scope.users);
};
$scope.selectUser = function (user) {
$scope.clickedUser = user;
localStorage.setItem("users", JSON.stringify($scope.users));
};
$scope.editUser = function () {
console.log($scope.users.indexOf($scope.clickedUser));
// $scope.users.push($scope.editUser);
$scope.users.push($scope.users.indexOf($scope.clickedUser), 1);
localStorage.setItem("users", JSON.stringify($scope.users));
$scope.info = "User Edited Successfully!";
}
$scope.deleteUser = function () {
console.log($scope.users.indexOf($scope.clickedUser));
$scope.users.splice($scope.users.indexOf($scope.clickedUser), 1);
localStorage.setItem("users", JSON.stringify($scope.users));
$scope.info = "User Deleted Successfully!";
};
$scope.clearInfo = function () {
$scope.info = "";
};
});<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>User Management- M&M</title>
<link rel="icon" href="images/logo.jpg">
<link href="css/bootstrap.min.css" rel="stylesheet" />
<script type="text/javascript" src="js/angular.min.js"></script>
<script type="text/javascript" src="js/app.js"></script>
<!--<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">-->
<!--<link href="CSS/Home.css" rel="stylesheet" />-->
</head>
<body ng-app="myApp" ng-controller="myController">
<nav class="navbar navbar-expand-lg navbar-light" id="mainNav">
<div class="container">
<a class="navbar-brand js-scroll-trigger" href="index.html">
<img src="images/logo.jpg" alt="M&M" width="110" />
</a>
<button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbarResponsive" aria-controls="navbarResponsive" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarResponsive">
<ul class="navbar-nav ml-auto">
<li class="nav-item">
<a class="nav-link js-scroll-trigger" href="LoginPage.html">Login</a>
</li>
<li class="nav-item">
<a class="nav-link active js-scroll-trigger" href="User_Mgmt.html">User Management</a>
</li>
<li class="nav-item">
<a class="nav-link js-scroll-trigger" href="CompanyManagement.html">Company Management</a>
</li>
<li class="nav-item">
<a class="nav-link js-scroll-trigger" href="ProductPage.html">Product Management</a>
</li>
<li class="nav-item">
<a class="nav-link js-scroll-trigger" href="ShoppingCart_Group5_Team1.html">Shopping Cart</a>
</li>
</ul>
</div>
</div>
</nav>
<header class="subhead">
<div class="container">
<div class="row">
<div class="col-xs-6 col-md-6">
<input class="form-control" id="ex3" type="text" placeholder="Search Users" ng-model="searchUsers">
</div>
<div class="col-xs-6 col-md-6">
<button type="button" class="btn btn-info btn-lg float-right" data-toggle="modal" data-target="#myModal">Add New</button>
</div>
<div class="clearfix"></div>
</div>
<hr>
<table class="table table-striped table-hover">
<thead>
<tr class="table100-head">
<th>Email</th>
<th>First Name</th>
<th>Last Name</th>
<th>Contact</th>
<th>Role</th>
<th>Company</th>
<th>Edit</th>
<th>Delete</th>
</tr>
</thead>
<tbody>
<tr ng-repeat="user in users | filter: searchUsers track by $index">
<td>{{user.email}}</td>
<td>{{user.firstName}}</td>
<td>{{user.lastName}}</td>
<td>{{user.contact}}</td>
<td>{{user.role}}</td>
<td>{{user.company}}</td>
<td>
<button type="button" class="btn btn-info" data-toggle="modal" data-target="#myModalEdit" ng-click="selectUser(user)">Edit</button>
</td>
<td>
<button type="button" class="btn btn-danger" data-toggle="modal" data-target="#myModalDelete" ng-click="selectUser(user)">Delete</button>
</td>
</tr>
</tbody>
</table>
</div>
<!-- Pop Up-ADD NEW USER Modal -->
<div class="modal fade" id="myModal" role="dialog">
<div class="modal-dialog">
<!-- Modal content-->
<div class="modal-content">
<div class="modal-header">
<h4 class="modal-title">New User Registration</h4>
<button type="button" class="close" data-dismiss="modal">×</button>
</div>
<div class="modal-body">
<form class="form-horizontal" action="/action_page.php">
<div class="form-group">
<label class="control-label col-sm-2">Email</label>
<div class="col-sm-10">
<input type="email" class="form-control" placeholder="Enter Email" ng-model="newUser.email">
</div>
</div>
<div class="form-group">
<label class="control-label col-sm-2">First Name</label>
<div class="col-sm-10">
<input type="text" class="form-control" placeholder="Enter First Name" ng-model="newUser.firstName">
</div>
</div>
<div class="form-group">
<label class="control-label col-sm-2">Last Name</label>
<div class="col-sm-10">
<input type="text" class="form-control" placeholder="Enter Last Name" ng-model="newUser.lastName">
</div>
</div>
<div class="form-group">
<label class="control-label col-sm-2">Contact</label>
<div class="col-sm-10">
<input type="tel" class="form-control" placeholder="Enter Contact" ng-model="newUser.contact">
</div>
</div>
<div class="form-group">
<label class="control-label col-sm-2">Role</label>
<div class="col-sm-10">
<input type="text" class="form-control" placeholder="Enter Role" ng-model="newUser.role">
</div>
</div>
<div class="form-group">
<label class="control-label col-sm-2">Company</label>
<div class="col-sm-10">
<select class="form-control" placeholder="Select Company" ng-model="newUser.company">
<option value="Apple">Apple</option>
<option value="Samsung">Samsung</option>
<option value="Sony">Sony</option>
<option value="LG">LG</option>
<option value="OnePlus">OnePlus</option>
</select>
</div>
</div>
<div class="form-group">
<div class="col-sm-offset-2 col-sm-10">
<button type="submit" class="btn btn-default" ng-click="saveUser()" data-dismiss="modal">Submit</button>
</div>
</div>
</form>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
</div>
</div>
</div>
</div>
<!-- Pop Up-EDIT USER Modal -->
<div class="modal fade" id="myModalEdit" role="dialog">
<div class="modal-dialog">
<!-- Modal content-->
<div class="modal-content">
<div class="modal-header">
<h4 class="modal-title">Edit User</h4>
<button type="button" class="close" data-dismiss="modal">×</button>
</div>
<div class="modal-body">
<form class="form-horizontal" action="/action_page.php">
<div class="form-group">
<label class="control-label col-sm-2">Email</label>
<div class="col-sm-10">
<input type="email" class="form-control" placeholder="Enter Email" ng-model="clickedUser.email">
</div>
</div>
<div class="form-group">
<label class="control-label col-sm-2">First Name</label>
<div class="col-sm-10">
<input type="text" class="form-control" placeholder="Enter First Name" ng-model="clickedUser.firstName">
</div>
</div>
<div class="form-group">
<label class="control-label col-sm-2">Last Name</label>
<div class="col-sm-10">
<input type="text" class="form-control" placeholder="Enter Last Name" ng-model="clickedUser.lastName">
</div>
</div>
<div class="form-group">
<label class="control-label col-sm-2">Contact</label>
<div class="col-sm-10">
<input type="tel" class="form-control" placeholder="Enter Contact" ng-model="clickedUser.contact">
</div>
</div>
<div class="form-group">
<label class="control-label col-sm-2">Role</label>
<div class="col-sm-10">
<input type="text" class="form-control" placeholder="Enter Role" ng-model="clickedUser.role">
</div>
</div>
<div class="form-group">
<label class="control-label col-sm-2">Company</label>
<div class="col-sm-10">
<select class="form-control" placeholder="Select Company" ng-model="clickedUser.company">
<option value="Apple">Apple</option>
<option value="Samsung">Samsung</option>
<option value="Sony">Sony</option>
<option value="LG">LG</option>
<option value="OnePlus">OnePlus</option>
</select>
</div>
</div>
<div class="form-group">
<div class="col-sm-offset-2 col-sm-10">
<button type="submit" class="btn btn-default" data-dismiss="modal" ng-click="editUser()">Submit</button>
</div>
</div>
</form>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
</div>
</div>
</div>
</div>
<!-- Pop Up-DELETE USER Modal -->
<div class="modal fade" id="myModalDelete" role="dialog">
<div class="modal-dialog">
<!-- Modal content-->
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal">×</button>
<h5 class="modal-title">Are You Sure?</h5>
</div>
<div class="modal-body">
<h5 style="color: red">You are going to delete the user "{{clickedUser.firstName}}"</h5>
<br />
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal" ng-click="deleteUser()">Yes</button>
<button type="button" class="btn btn-default" data-dismiss="modal">No</button>
</div>
</div>
</div>
</div>
</header>
<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<!-- Include all compiled plugins (below), or include individual files as needed -->
<script src="js/bootstrap.min.js"></script>
</body>
</html>解决方案
controller.js对文件进行了以下更改
提供id给每个用户对象，以便他们可以有效地跟踪，而无需检查对象的引用。
function parseData(input) {
return input.reduce(function (o, i) {
o.push(Object.assign({"id":Date.now()},i));
return o;
},[]);
}
var initialData = [
{ email: "John@yahoo.com", firstName: "John", lastName: "Doe", contact: "281-283-2480", role: "Supplier-Admin", company: "Apple" },
{ email: "Rick@yahoo.com", firstName: "Rick", lastName: "Fraiser", contact: "987-283-2489", role: "Supplier-User", company: "Apple" },
{ email: "Sam@yahoo.com", firstName: "Sam", lastName: "Tarly", contact: "456-786-2480", role: "BuyerAdmin", company: "Samsung" }
];
$scope.users = parseData(initialData);
选择用户时创建一个新对象而不是设置现有对象的引用
$scope.clickedUser = Object.assign({},user);
虽然编辑用户迭代users对象并更新编辑的用户而不是设置参考
$scope.editUser = function () {
$scope.users = $scope.users.reduce(function (o,user) {
if(user.id === $scope.clickedUser.id){
user = Object.assign(user,$scope.clickedUser);
}
o.push(user);
return o;
},[]);
$scope.clickedUser = {};
console.log("Users detail => ",$scope.users);
localStorage.setItem("users", JSON.stringify($scope.users));
$scope.info = "User Edited Successfully!";
};
删除用户方法
$scope.deleteUser = function () {
$scope.users = $scope.users.reduce(function (o,user) {
if(user.id !== $scope.clickedUser.id){
o.push(user);
}
return o;
},[]);
$scope.clickedUser = {};
console.log("Users detail => ",$scope.users);
localStorage.setItem("users", JSON.stringify($scope.users));
$scope.info = "User Deleted Successfully!";
};
controller.js文件的完整代码
var myApp = angular.module("myApp", []);
myApp.controller("myController", function ($scope) {
console.log("in controller...");
$scope.newUser = {};
$scope.clickedUser = {};
$scope.info = "";
function parseData(input) {
return input.reduce(function (o, i) {
o.push(Object.assign({"id":Date.now()},i));
return o;
},[]);
}
if (localStorage.getItem("users") === null) {
var initialData = [
{ email: "John@yahoo.com", firstName: "John", lastName: "Doe", contact: "281-283-2480", role: "Supplier-Admin", company: "Apple" },
{ email: "Rick@yahoo.com", firstName: "Rick", lastName: "Fraiser", contact: "987-283-2489", role: "Supplier-User", company: "Apple" },
{ email: "Sam@yahoo.com", firstName: "Sam", lastName: "Tarly", contact: "456-786-2480", role: "BuyerAdmin", company: "Samsung" }
];
$scope.users = parseData(initialData);
localStorage.setItem("users", JSON.stringify($scope.users));
} else {
$scope.users = JSON.parse(localStorage.getItem("users"));
}
$scope.saveUser = function () {
console.log("Saving...");
$scope.users.push(Object.assign({"id":Date.now()},$scope.newUser));
$scope.info = "New User Added Successfully!";
$scope.newUser = {};
localStorage.setItem("users", JSON.stringify($scope.users));
};
$scope.selectUser = function (user) {
$scope.clickedUser = Object.assign({},user);
};
$scope.editUser = function () {
$scope.users = $scope.users.reduce(function (o,user) {
if(user.id === $scope.clickedUser.id){
user = Object.assign(user,$scope.clickedUser);
}
o.push(user);
return o;
},[]);
$scope.clickedUser = {};
console.log("Users detail => ",$scope.users);
localStorage.setItem("users", JSON.stringify($scope.users));
$scope.info = "User Edited Successfully!";
};
$scope.deleteUser = function () {
$scope.users = $scope.users.reduce(function (o,user) {
if(user.id !== $scope.clickedUser.id){
o.push(user);
}
return o;
},[]);
$scope.clickedUser = {};
console.log("Users detail => ",$scope.users);
localStorage.setItem("users", JSON.stringify($scope.users));
$scope.info = "User Deleted Successfully!";
};
$scope.clearInfo = function () {
$scope.info = "";
};
});
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