AngularJS with MVC4 CRUD

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:

<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>

<head>

<title>Index</title>

</head>

<body>

</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.html, edit.html and delete.html.

a) List.html

<div>

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

</div>

<tr>

<th>Employee Id</th>

<th>First Name</th>

<th>Description</th>

<th>Salary</th>

<th>Country</th>

<th>State</th>

<th>Date of Birth</th>

<th>Is Active</th>

</tr>

<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>

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

</td>

<td>

</td>

<td>

</td>

</tr>

</table>

</div>

b) Edit.html

<h3>

{{ title }}</h3>

<hr />

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

First Name</label>

</div>

Last Name:</label>

</div>

Country:</label>

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

</select>

</div>

State:</label>

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

</select>

</div>

Current Salary:</label>

</div>

Date of Birth:</label>

</div>

Description:</label>

</div>

<label>

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

</div>

Submit</button>

</form>

c) Delete.html

<h3>

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

<hr />

First Name :</label>

{{ firstname }}</p>

</div>

Last Name :</label>

{{ lastname }}</p>

</div>

Country :</label>

{{ country }}</p>

</div>

State :</label>

{{ state }}</p>

</div>

Salary :</label>

{{ salary }}</p>

</div>

Date of Birth :</label>

{{ dob | date }}</p>

</div>

Description :</label>

{{ description }}</p>

</div>

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

</div>

Delete</button>

</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

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. ...
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 ...
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 ...
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) ...
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 ...
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 ...
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 ...
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 ...
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

WCF 动态生成不用增加引用两种方式
一.fromwork2.0低版本方式 1,打开vs的命令工具输入:wsdl wcf地址 + /l:cs /out:文件名上面红色部分替换掉就行,文件名,你想叫什么文件名都行. 2,回车,生成的文件 ...
SecureCRT上传bash: rz: command not found(转载）
转载自:http://blog.csdn.net/zhangdaiscott/article/details/18141017 -bash: rz: command not found rz命令没找到 ...
C# list 筛选FindAll
例如:参数a.list b.ModelId:根据ModelId参数进行筛选 /// <summary> /// 根据ModelId筛选查询出对应的数据 /// </summary&g ...
Unity3d 协程、调用函数、委托
(一)协程开启方法:StartCoroutine("函数名"): 结束方法StopCoroutine("函数名"),StopAllCoroutines(); ...
sed 常见用法
sed 1. 移除空白行 sed '/^$/d' file 2. 直接在文本中进行替换 sed 's/pattern/replacement/g' -i file -i[SUFFIX], --in-p ...
PHP运算符及php取整函数
ceil -- 进一法取整说明 float ceil ( float value ) 返回不小于 value 的下一个整数,value 如果有小数部分则进一位.ceil() 返回的类型仍然是 flo ...
POJ 3393 Lucky and Good Months by Gregorian Calendar
http://poj.org/problem?id=3393 题意 : 对于这篇长长的英语阅读,表示无语无语再无语,花了好长时间,终于读完了.题目中规定每周的周六日为假日,其他为工作日,若是一个月的第 ...
HDU4607+BFS
/* bfs+求树的直径关键:if k<=maxs+1 直接输出k-1: else: k肯定的是包括最长路.先从最长路的起点出发,再走分支,最后到达最长路的终点. 因此是2*(k-(maxs+ ...
BZOJ 1030 文本生成器
很老的题目了,很早以前学AC自动机的时候就A过一次今天算是复习啦我们可以把问题转化成一个给定字符串都没出现的字符串有多少个我们建立AC自动机,设dp[i][j]表示走了i步当前在j节点上在DP ...
linux系统相关的任务［fg、bg、jobs、&、ctrl + z］
转自: http://blog.chinaunix.net/space.php?uid=20697318&do=blog&id=1891382 fg.bg.jobs.&.ctr ...

AngularJS with MVC4 CRUD

CRUD using MVC Web API and AngularJS

AngularJS with MVC4 CRUD的更多相关文章

随机推荐

热门专题