CRUD using MVC Web API and AngularJS

In this article I am going to demonstrate about how can we create basic crud (create, read, update and delete) using MVC Web API, SQL Server and Angular JS.

In this demo application our main concern will be on Angular JS data-binding and routing. I also used a Entity Framework Code First approach for database operation.

Functionalities present in this application:

a)      Data Binding using AngularJS

b)      Client side routing using Angular Routing

c)       Cascading Dropdown using AngularJS

d)      Conditional formatting using Angularjs

e)      Select, Insert, Update and Delete record in sql server database.

Let’s start step by step so that we can achieve our objective at the end of this article. After completing this demo our application should look like this:

1)       Employee List page:

2)      Employee Page for Create and Edit a record.

3)      Employee Delete Confirmation page with details:

To achieve the above, follow the steps given below:

1)      Create a new asp.net mvc empty web application.

2)      Add the following package in your application:

a)      AngularJS.Core

b)      AngularJS.Route

c)       Bootstrap

d)      EntityFramework

3)      Create a Model named Employee in Models folder and replace the code with the following:

public class Employee

{

public int EmployeeId { get; set; }

[Required]

[StringLength(20)]

public string FirstName { get; set; }

[Required]

[StringLength(20)]

public string LastName { get; set; }

[Required]

[StringLength(100)]

public string Description { get; set; }

public float Salary { get; set; }

[Required]

[StringLength(50)]

public string Country { get; set; }

[Required]

[StringLength(50)]

public string State { get; set; }

public DateTime DateofBirth { get; set; }

public bool IsActive { get; set; }

}

public class EmployeeDbContext : DbContext

{

public EmployeeDbContext()

: base()

{

Database.SetInitializer<EmployeeDbContext>(new EmployeeDbContextInitializer());

}

public DbSet<Employee>Employees { get; set; }

}

public class EmployeeDbContextInitializer : DropCreateDatabaseIfModelChanges<EmployeeDbContext>

{

protected override void Seed(EmployeeDbContext context)

{

var list = new List<Employee>

{

new Employee { FirstName = "Rohit", LastName = "Kesharwani", Description = "Rohit Kesharwani", DateofBirth = DateTime.Now.AddYears(-23), Country = "IN", State="UP", Salary = 99999, IsActive = true },

new Employee { FirstName = "Rahul", LastName = "Singh", Description = "Rahul Singh", DateofBirth =DateTime.Now.AddYears(-25), Country = "IN", State="MP", Salary = 49999.28f, IsActive = true }

};

list.ForEach(m =>

{

context.Employees.Add(m);

});

context.SaveChanges();

base.Seed(context);

}

}

4)      Add a connection string with same name of EmployeeDbContext in web.config:

<connectionStrings>

<addname="EmployeeDbContext"connectionString="Data Source=(local);Initial Catalog=EmpDb;Integrated Security=true;"providerName="System.Data.SqlClient"/>

</connectionStrings>

5)      Now create a Employee API controller to perform crud in database:

public class EmployeeController : ApiController

{

EmployeeDbContext db = new EmployeeDbContext();

// GET api/employee

[ActionName("get"), HttpGet]

public IEnumerable<Employee>Emps()

{

return db.Employees.ToList();

}

// GET api/employee/5

public Employee Get(int id)

{

return db.Employees.Find(id);

}

// POST api/employee

public HttpResponseMessage Post(Employee model)

{

if (ModelState.IsValid)

{

db.Employees.Add(model);

db.SaveChanges();

HttpResponseMessage response = Request.CreateResponse(HttpStatusCode.Created, model);

return response;

}

else

{

return Request.CreateErrorResponse(HttpStatusCode.BadRequest, ModelState);

}

}

// PUT api/employee/5

public HttpResponseMessage Put(Employee model)

{

if (ModelState.IsValid)

{

db.Entry(model).State = System.Data.Entity.EntityState.Modified;

db.SaveChanges();

HttpResponseMessage response = Request.CreateResponse(HttpStatusCode.OK, model);

return response;

}

else

{

return Request.CreateErrorResponse(HttpStatusCode.BadRequest, ModelState);

}

}

// DELETE api/employee/5

public HttpResponseMessage Delete(int id)

{

Employee emp = db.Employees.Find(id);

if (emp == null)

{

return Request.CreateResponse(HttpStatusCode.NotFound);

}

db.Employees.Remove(emp);

db.SaveChanges();

return Request.CreateResponse(HttpStatusCode.OK, emp);

}

6)      Also create a Country controller to retrieve country and its states from server side in order to implement cascading dropdown list:

public class CountryController : ApiController

{

// GET api/country

public IEnumerable<System.Web.Mvc.SelectListItem> Get()

{

List<System.Web.Mvc.SelectListItem> countries = new List<System.Web.Mvc.SelectListItem>

{

new System.Web.Mvc.SelectListItem { Text = "India", Value="IN" },

new System.Web.Mvc.SelectListItem { Text = "United States", Value="US" },

new System.Web.Mvc.SelectListItem { Text = "United Kingdom", Value="UK" },

new System.Web.Mvc.SelectListItem { Text = "Australlia", Value="CA" }

};

return countries;

}

// GET api/country/5

public IEnumerable<System.Web.Mvc.SelectListItem> Get(string id)

{

List<System.Web.Mvc.SelectListItem> states = new List<System.Web.Mvc.SelectListItem>();

switch (id)

{

case "IN":

states.Add(new System.Web.Mvc.SelectListItem { Text = "Uttar Pradesh", Value = "UP" });

states.Add(new System.Web.Mvc.SelectListItem { Text = "Madhya Pradesh", Value = "MP" });

states.Add(new System.Web.Mvc.SelectListItem { Text = "Delhi", Value = "DL" });

states.Add(new System.Web.Mvc.SelectListItem { Text = "Kanpur", Value = "KN" });

break;

case "US":

states.Add(new System.Web.Mvc.SelectListItem { Text = "California", Value = "CA" });

states.Add(new System.Web.Mvc.SelectListItem { Text = "Newyork", Value = "NY" });

break;

case "UK":

states.Add(new System.Web.Mvc.SelectListItem { Text = "London", Value = "LN" });

states.Add(new System.Web.Mvc.SelectListItem { Text = "Paris", Value = "PR" });

break;

case "CA":

states.Add(new System.Web.Mvc.SelectListItem { Text = "Sydney", Value = "SD" });

states.Add(new System.Web.Mvc.SelectListItem { Text = "Melbourne", Value = "MB" });

break;

}

return states;

}

}

7)      Now create a Home controller and add an Index view and reference some css and JavaScript files of angularjs and bootstrap to create a view and partial views:

public class HomeController : Controller

{

public ActionResult Index()

{

return View();

}

}

8)      Index view with js and css references:

@{

Layout = null;

}

<!DOCTYPE html>

<html ng-app="EmpApp">

<head>

<meta name="viewport" content="width=device-width" />

<title>Index</title>

<link href="@Url.Content("~/Content/bootstrap.min.css")" rel="stylesheet" type="text/css" />

<script src="@Url.Content("~/Scripts/angular.min.js")" type="text/javascript"></script>

<script src="@Url.Content("~/Scripts/angular-route.js")" type="text/javascript"></script>

<script src="@Url.Content("~/Scripts/app/app.js")" type="text/javascript"></script>

<script src="@Url.Content("~/Scripts/app/controller.js")" type="text/javascript"></script>

</head>

<body>

<div class="main Containerng-view>

</div>

</body>

</html>

I have highlighted ng-app and ng-view attribute. This is for initializing module under app and rendering of partial views inside ng-view.

9)      Now create an app.js file for configuration of route and controllers. The code of app.js is given below:

var EmpApp = angular.module('EmpApp', [

'ngRoute',

'EmpControllers'

]);

EmpApp.config(['$routeProvider', function ($routeProvider) {

$routeProvider.when('/list', {

templateUrl: 'Employee/list.html',

controller: 'ListController'

}).

when('/create', {

templateUrl: 'Employee/edit.html',

controller: 'EditController'

}).

when('/edit/:id', {

templateUrl: 'Employee/edit.html',

controller: 'EditController'

}).

when('/delete/:id', {

templateUrl: 'Employee/delete.html',

controller: 'DeleteController'

}).

otherwise({

redirectTo: '/list'

});

}]);

10)   Now add a folder named Employee under root directory of an application and following three views (html files) list.htmledit.html and delete.html.

a)      List.html

<div>

<a href="#/create" class="btn">Create</a>

</div>

<div class="table-responsive">

<table class="table table-striped table-bordered">

<tr>

<th>Employee Id</th>

<th>First Name</th>

<th>Last Name</th>

<th>Description</th>

<th>Salary</th>

<th>Country</th>

<th>State</th>

<th>Date of Birth</th>

<th>Is Active</th>

<th></th>

<th></th>

</tr>

<tr ng-repeat="item in employees">

<td>{{ item.EmployeeId }}</td>

<td>{{ item.FirstName }}</td>

<td>{{ item.LastName }}</td>

<td>{{ item.Description }}</td>

<td>{{ item.Salary | number: 2 }}</td>

<td>{{ item.Country }}</td>

<td>{{ item.State }}</td>

<td>{{ item.DateofBirth | date }}</td>

<td>

<span class="label" ng-class="{true:'label-success', false:'label-danger', '':'hidden'}[item.IsActive]">

{{ item.IsActive ? 'Active' : 'In Active' }}</span>

</td>

<td>

<a href="#/edit/{{item.EmployeeId}}" class="glyphicon glyphicon-edit"></a>

</td>

<td>

<a href="#/delete/{{item.EmployeeId}}" class="glyphicon glyphicon-trash"></a>

</td>

</tr>

</table>

</div>

b)      Edit.html

<h3>

{{ title }}</h3>

<hr />

<form role="form" style="max-width: 500px;">

<strong class="error">{{ error }}</strong>

<div class="form-group">

<label for="firstname">

First Name</label>

<input type="text" class="form-control" id="firstname" ng-model="firstname" />

</div>

<div class="form-group">

<label for="lastname">

Last Name:</label>

<input type="text" class="form-control" id="lastname" ng-model="lastname" />

</div>

<div class="form-group">

<label for="country">

Country:</label>

<select class="form-control" id="country" ng-model="country" ng-options="c.Value as c.Text for c in countries"ng-change="getStates()">

<option value="">-- Select Country --</option>

</select>

</div>

<div class="form-group">

<label for="state">

State:</label>

<select class="form-control" id="state" ng-model="state" ng-disabled="!states" ng-options="s.Value as s.Text for s in states">

<option value="">-- Select State --</option>

</select>

</div>

<div class="form-group">

<label for="salary">

Current Salary:</label>

<input type="text" class="form-control" id="salary" ng-model="salary" />

</div>

<div class="form-group">

<label for="dob">

Date of Birth:</label>

<input type="date" class="form-control" id="dob" ng-model="dob" />

</div>

<div class="form-group">

<label for="description">

Description:</label>

<textarea rows="5" cols="10" class="form-control" id="description" ng-model="description"></textarea>

</div>

<div class="form-group checkbox">

<label>

<input type="checkbox" ng-model="active" />Active</label>

</div>

<a href="#/list" class="btn btn-info">Back to List</a>

<button type="submit" class="btn btn-default" ng-click="save()">

Submit</button>

</form>

c)       Delete.html

<h3>

Are you want to sure to delete this record?</h3>

<hr />

<form class="form-horizontal" style="max-width: 500px;">

<div class="form-group">

<label class="control-label col-xs-3">

First Name :</label>

<div class="col-xs-9">

<p class="form-control-static">

{{ firstname }}</p>

</div>

</div>

<div class="form-group">

<label class="control-label col-xs-3">

Last Name :</label>

<div class="col-xs-9">

<p class="form-control-static">

{{ lastname }}</p>

</div>

</div>

<div class="form-group">

<label class="control-label col-xs-3">

Country :</label>

<div class="col-xs-9">

<p class="form-control-static">

{{ country }}</p>

</div>

</div>

<div class="form-group">

<label class="control-label col-xs-3">

State :</label>

<div class="col-xs-9">

<p class="form-control-static">

{{ state }}</p>

</div>

</div>

<div class="form-group">

<label class="control-label col-xs-3">

Salary :</label>

<div class="col-xs-9">

<p class="form-control-static">

{{ salary }}</p>

</div>

</div>

<div class="form-group">

<label class="control-label col-xs-3">

Date of Birth :</label>

<div class="col-xs-9">

<p class="form-control-static">

{{ dob | date }}</p>

</div>

</div>

<div class="form-group">

<label class="control-label col-xs-3">

Description :</label>

<div class="col-xs-9">

<p class="form-control-static">

{{ description }}</p>

</div>

</div>

<div class="form-group">

<div class="col-xs-offset-3 col-xs-9">

<span class="label" ng-class="{true:'label-success', false:'label-danger', '':'hidden'}[active]">

{{ active ? 'Active' : 'In Active' }}</span>

</div>

</div>

<div class="form-group">

<div class="col-xs-offset-3 col-xs-9 text-center">

<a href="#/list" class="btn btn-info">Back to List</a>

<button type="submit" class="btn btn-primary" ng-click="delete()">

Delete</button>

</div>

</div>

</form>

We had setup three views for list, create, edit and delete. Now we will implement the functionalities for these three views.

11)   Create a controller.js file and add the following code given below:

var EmpControllers = angular.module("EmpControllers", []);

// this controller call the api method and display the list of employees

// in list.html

EmpControllers.controller("ListController", ['$scope', '$http',

function ($scope, $http) {

$http.get('/api/employee').success(function (data) {

$scope.employees = data;

});

} ]

);

// this controller call the api method and display the record of selected employee

// in delete.html and provide an option for delete

EmpControllers.controller("DeleteController", ['$scope', '$http', '$routeParams', '$location',

function ($scope, $http, $routeParams, $location) {

$scope.id = $routeParams.id;

$http.get('/api/employee/' + $routeParams.id).success(function (data) {

$scope.firstname = data.FirstName;

$scope.lastname = data.LastName;

$scope.country = data.Country;

$scope.state = data.State;

$scope.salary = data.Salary;

$scope.active = data.IsActive;

$scope.dob = data.DateofBirth;

$scope.description = data.Description;

});

$scope.delete = function () {

$http.delete('/api/Employee/' + $scope.id).success(function (data) {

$location.path('/list');

}).error(function (data) {

$scope.error = "An error has occured while deleting employee! " + data;

});

};

}

]);

// this controller call the api method and display the record of selected employee

// in edit.html and provide an option for create and modify the employee and save the employee record

EmpControllers.controller("EditController", ['$scope', '$filter', '$http', '$routeParams', '$location',

function ($scope, $filter, $http, $routeParams, $location) {

$http.get('/api/country').success(function (data) {

$scope.countries = data;

});

$scope.id = 0;

$scope.getStates = function () {

var country = $scope.country;

if (country) {

$http.get('/api/country/'+country).success(function (data) {

$scope.states = data;

});

}

else {

$scope.states = null;

}

}

$scope.save = function () {

var obj = {

EmployeeId: $scope.id,

FirstName: $scope.firstname,

LastName: $scope.lastname,

Country: $scope.country,

State: $scope.state,

Salary:$scope.salary,

IsActive: $scope.active,

Description: $scope.description,

DateofBirth: $scope.dob

};

if ($scope.id == 0) {

$http.post('/api/Employee/', obj).success(function (data) {

$location.path('/list');

}).error(function (data) {

$scope.error = "An error has occured while adding employee! " + data.ExceptionMessage;

});

}

else {

$http.put('/api/Employee/', obj).success(function (data) {

$location.path('/list');

}).error(function (data) {

console.log(data);

$scope.error = "An Error has occured while Saving customer! " + data.ExceptionMessage;

});

}

}

if ($routeParams.id) {

$scope.id = $routeParams.id;

$scope.title = "Edit Employee";

$http.get('/api/employee/' + $routeParams.id).success(function (data) {

$scope.firstname = data.FirstName;

$scope.lastname = data.LastName;

$scope.country = data.Country;

$scope.state = data.State;

$scope.salary = data.Salary;

$scope.active = data.IsActive;

$scope.description = data.Description;

$scope.dob = new Date(data.DateofBirth);

$scope.getStates();

});

}

else {

$scope.title = "Create New Employee";

}

}

]);

In this controller.js we have multiple controller for different views. Like ListController for list view (display the list of employees), Edit controller for edit view (create and modify the record), DeleteController for delete view (delete confirmation and delete the record).

Now all we have implement and successfully completed all the steps.

To test the process you can build and run an application. I hope it works fine.

AngularJS with MVC4 CRUD的更多相关文章

  1. AngularJS入门 & 分页 & CRUD示例

    一.AngularJS 简介 ​ AngularJS  诞生于2009年,由Misko Hevery 等人创建,后为Google所收购.是一款优秀的前端JS框架,已经被用于Google的多款产品当中. ...

  2. AngularJs学习笔记1——总体介绍

    这周末在家呆了两天,正好中午闲暇时间继续分享Angularjs相关,今天主要分享Angularjs总体介绍及数据绑定部分内容,下面直接进入主题. 1.基本概念: AngularJS是为了克服HTML在 ...

  3. 初入AngularJS基础门

    作为mvvm 框架过重 不适用于性能比较高的移动端的web栈, ui组建性对复杂,不利于重用 AngularJS 构建一个CRUD ( create retrieve update delete )的 ...

  4. AngularJS入门之如何快速上手

      概述: AngularJS(ng)是一个纯JS框架,AngularJS易于构建CRUD应用(CRUD意思是增删改查) 适用于以数据操作为主的SPA(Single Page Application) ...

  5. 如何编写Angular指令

    [20140917]Angular:如何编写一个指令 *:first-child { margin-top: 0 !important; } body>*:last-child { margin ...

  6. Angular开发者指南(一)入门介绍

    什么是Angular AngularJS是动态Web应用程序的结构框架. 它允许您使用HTML作为模板语言,并允许您扩展HTML的语法以清晰,简洁地表达应用程序的组件.AngularJS的数据绑定和依 ...

  7. Angular(一)

    Angular开发者指南(一)入门介绍   什么是AngularAngularJS是动态Web应用程序的结构框架. 它允许您使用HTML作为模板语言,并允许您扩展HTML的语法以清晰,简洁地表达应用程 ...

  8. CRUD Operations in MVC4 Using AngularJS and WCF REST Services

    Now in this article I will show how to do Create, Retrieve, Update and Delete (CRUD) operations in M ...

  9. Spring4 MVC+ AngularJS CRUD使用$http实例

    这篇文章显示了使用Spring MVC4整合AngularJS.我们将创建一个使用后端和AngularJS作为前端的纯JSP封装Spring REST API一个CRUD应用程序, 使用 $http ...

随机推荐

  1. 录制游戏视频——fraps

    http://pcedu.pconline.com.cn/341/3417224.html

  2. Lua中cJson的读写

    这里采用的是Lua CJson库,是一个高性能的JSON解析器和编码器,其性能比纯Lua库要高10~20倍.并且Lua Json完全支持UTF-8,无需以来其他非Lua/LuaJit相关包. 环境安装 ...

  3. struts2的namespace

    struts2 的命名空间action里的name是个无关紧要的东西,namespace为‘/’表示所有 为‘/名字’,不管怎么访问只要名称空间些对了就不会错,/时你的请求地址可以直接写**Actio ...

  4. Linux学习笔记(6)-工作管理

    什么是工作管理 工作来自job命令的翻译,job命令可以查看后台工作的进程.举例来说什么是工作管理,当你要打包一个比较大的目录时,很耗时间,但是你同时又需要使用别的命令.你会想我可以到开几个终端进行登 ...

  5. BZOJ 4146 [AMPPZ2014] Divisors 解题报告

    这个题感觉比较小清新... 我们记录每个数出现的次数 $T_i$. 首先依次枚举每个数字,令 $ans = ans + T_i \times (T_i - 1)$,然后枚举这个数的倍数,令 $ans ...

  6. [转载]jQuery 1.9 移除了 $.browser 的替代方法获取浏览器类型

    jQuery 从 1.9 版开始,移除了 $.browser 和 $.browser.version , 取而代之的是 $.support . 在更新的 2.0 版本中,将不再支持 IE 6/7/8. ...

  7. Flume学习——Flume的架构

    Flume有三个组件:Source.Channel 和 Sink.在源码中对应同名的三个接口. When a Flume source receives an event, it stores it ...

  8. HDU 2992 Hotel booking(BFS+DFS 或者 SPFA+Floyd)

    点我看题目 题意 : 一个司机要从1点到达n点,1点到n点中有一些点有宾馆,司机的最长开车时间不能超过10小时,所以要在10小时之内找到宾馆休息,但是为了尽快的走到n点,问最少可以经过几个宾馆. 思路 ...

  9. linux命令补全 忘记命令只记得开头

    linux的shell不仅提供上下箭头来翻阅历史使用过的命令,还提供命令补全功能. 例如,你想创建一个文件夹,只记得是m开头的命令,此时可以: ①输入m ②按键盘上的Tab键两次 (有可能还出现这句话 ...

  10. Zookeeper + Hadoop + Hbase部署备忘

    网上类似的文章很多,本文只是记录下来备忘.本文分四大步骤: 准备工作.安装zookeeper.安装hadoop.安装hbase,下面分别详细介绍: 一 准备工作 1. 下载 zookeeper.had ...