Introduction
Hooks are a new concept that was introduced in React 16.8. Hooks are an alternative to classes.
In this article, I'm going to create CRUD operations using React Hooks and Web API.
Prerequisites
Basic knowledge of React.js and Web API.
Visual Studio should be installed on your system.
SQL Server Management Studio.
Basic knowledge of React strap and HTML.
Create a ReactJS Project
Let's create a React app by using the following command:
npx create-react-app crudhooks
Open the newly created project in Visual Studio Code and install Reactstrap and Bootstrap in this project by using the following commands.
npm install --save bootstrap
npm install --save reactstrap react react-dom
Now, open the index.js file and add import Bootstrap.
import 'bootstrap/dist/css/bootstrap.min.css';
Now, install the Axios library by using the following command.
npm install --save axios
Now, go to the src folder, create a new folder, and inside this folder, add three new components:
Createemployee.js.
Editemployee.js.
EmployeList.js.
Add Routing in ReactJS
Install the react-router-dom package by using the following command:
npm install react-router-dom --save
Open the app.js file and import Router, Route (react-router-dom), and the three components
Add the following code in the app.js file:
import React from 'react';
import logo from './logo.svg';
import './App.css';
import { BrowserRouter as Router, Switch, Route, Link }
from 'react-router-dom';
import Createemployee from './components/Createemployee'
import EmployeList from './components/EmployeList'
import Editemployee from "./components/Editemployee";
function App() {
return (
<div className="App">
<Router>
<div className="container">
<nav className="btn btn-warning navbar navbar-expand-lg navheader">
<div className="collapse navbar-collapse" >
<ul className="navbar-nav mr-auto">
<li className="nav-item">
<Link to={'/Createemployee'}
className="nav-link">Add Employee</Link>
</li>
<li className="nav-item">
<Link to={'/EmployeList'}
className="nav-link">Employee List</Link>
</li>
</ul>
</div>
</nav> <br />
<Switch>
<Route exact path='/Createemployee' component={Createemployee} />
<Route path='/edit/:id' component={Editemployee} />
<Route path='/EmployeList' component={EmployeList} />
</Switch>
</div>
</Router>
</div>
);
}
export default App;
Now, open the Createemployee.js file and add the following code:
import React, { useState, useEffect } from 'react'
import axios from 'axios';
import { Button, Card, CardBody, CardFooter, Col, Container, Form, Input, InputGroup,
InputGroupAddon, InputGroupText, Row } from 'reactstrap';
function Createemployee(props) {
const [employee, setemployee] = useState({ Name: '', Department: '', Age: '',
City: '', Country: '', Gender: '' });
const [showLoading, setShowLoading] = useState(false);
const apiUrl = "http://localhost:62168/api/Hooks/CreateEmp";
const Insertemployee = (e) => {
e.preventDefault();
debugger;
const data = { Name:employee.Name, Department: employee.Department,
Age: employee.Age, City:employee.City,
Country: employee.Country, Gender: employee.Gender };
axios.post(apiUrl, data)
.then((result) => {
props.history.push('/EmployeList')
});
};
const onChange = (e) => {
e.persist();
debugger;
setemployee({...employee, [e.target.name]: e.target.value});
}
return (
<div className="app flex-row align-items-center">
<Container>
<Row className="justify-content-center">
<Col md="12" lg="10" xl="8">
<Card className="mx-4">
<CardBody className="p-4">
<Form onSubmit={Insertemployee}>
<h1>Register</h1>
<InputGroup className="mb-3">
<Input type="text" name="Name" id="Name" placeholder="Name"
value={employee.Name} onChange={ onChange } />
</InputGroup>
<InputGroup className="mb-3">
<Input type="text" placeholder="Department" name="Department"
id="Department" value={employee.Department}
onChange={ onChange }/>
</InputGroup>
<InputGroup className="mb-3">
<Input type="text" placeholder="Age" name="Age" id="Age"
value={employee.Age} onChange={ onChange } />
</InputGroup>
<InputGroup className="mb-4">
<Input type="text" placeholder="City" name="City" id="City"
value={employee.City} onChange={ onChange } />
</InputGroup>
<InputGroup className="mb-4">
<Input type="text" placeholder="Country" name="Country"
id="Country" value={employee.Country}
onChange={ onChange } />
</InputGroup>
<InputGroup className="mb-4">
<Input type="text" placeholder="Gender" name="Gender"
id= "Gender" value={employee.Gender}
onChange={ onChange } />
</InputGroup>
<CardFooter className="p-4">
<Row>
<Col xs="12" sm="6">
<Button type="submit" className="btn btn-info mb-1" block>
<span>Save</span></Button>
</Col>
<Col xs="12" sm="6">
<Button className="btn btn-info mb-1" block>
<span>Cancel</span></Button>
</Col>
</Row>
</CardFooter>
</Form>
</CardBody>
</Card>
</Col>
</Row>
</Container>
</div>
)
}
export default Createemployee
Now, open the EmployeList.js file and add the following code:
import React from 'react'
import { Badge, Card, CardBody, CardHeader, Col, Pagination, PaginationItem,
PaginationLink, Row, Table } from 'reactstrap';
import axios from 'axios';
import { useState, useEffect } from 'react'
function EmployeList(props) {
const [data, setData] = useState([]);
useEffect(() => {
const GetData = async () => {
const result = await axios('http://localhost:62168/api/hooks/employee');
setData(result.data);
};
GetData();
}, []);
const deleteeployee = (id) => {
debugger;
axios.delete('http://localhost:62168/api/hooks/Deleteemployee?id=' + id)
.then((result) => {
props.history.push('/EmployeList')
});
};
const editemployee = (id) => {
props.history.push({
pathname: '/edit/' + id
});
};
return (
<div className="animated fadeIn">
<Row>
<Col>
<Card>
<CardHeader>
<i className="fa fa-align-justify"></i> Employee List
</CardHeader>
<CardBody>
<Table hover bordered striped responsive size="sm">
<thead>
<tr>
<th>Name</th>
<th>Department</th>
<th>Age</th>
<th>City</th>
<th>Country</th>
<th>Gender</th>
<th>Action</th>
</tr>
</thead>
<tbody>
{
data.map((item, idx) => {
return <tr>
<td>{item.Name}</td>
<td>{item.Department}</td>
<td>{item.Age}</td>
<td>{item.City}</td>
<td>{item.Country}</td>
<td>{item.Gender}</td>
<td>
<div class="btn-group">
<button className="btn btn-warning"
onClick={() => { editemployee(item.Id) }}>
Edit</button>
<button className="btn btn-warning"
onClick={() => { deleteeployee(item.Id) }}>
Delete</button>
</div>
</td>
</tr>
})}
</tbody>
</Table>
</CardBody>
</Card>
</Col>
</Row>
</div>
)
}
export default EmployeList
Now, open the Editemployee.js file and add the following code:
import React, { useState, useEffect } from 'react'
import axios from 'axios';
import { Button, Card, CardBody, CardFooter, Col, Container, Form, Input,
InputGroup, InputGroupAddon, InputGroupText, Row } from 'reactstrap';
function Editemployee(props) {
const [employee, setemployee]= useState({Id:'',Name: '', Department: '',
Age: '', City: '', Country: '', Gender: '' });
const Url = "http://localhost:62168/api/Hooks/employeedetails?id=" +
props.match.params.id;
useEffect(() => {
const GetData = async () => {
const result = await axios(Url);
setemployee(result.data);
};
GetData();
}, []);
const UpdateEmployee = (e) => {
e.preventDefault();
const data = {Id:props.match.params.id, Name:employee.Name,
Department: employee.Department, Age: employee.Age,
City:employee.City, Country: employee.Country,
Gender: employee.Gender };
axios.post('http://localhost:62168/api/Hooks/CreateEmp', data)
.then((result) => {
props.history.push('/EmployeList')
});
};
const onChange = (e) => {
e.persist();
setemployee({...employee, [e.target.name]: e.target.value});
}
return (
<div className="app flex-row align-items-center">
<Container>
<Row className="justify-content-center">
<Col md="12" lg="10" xl="8">
<Card className="mx-4">
<CardBody className="p-4">
<Form onSubmit={UpdateEmployee}>
<h1>Update Employee</h1>
<InputGroup className="mb-3">
<Input type="text" name="Name" id="Name"
placeholder="Name" value={employee.Name}
onChange={ onChange } />
</InputGroup>
<InputGroup className="mb-3">
<Input type="text" placeholder="Department"
name="Department" id="Department"
value={employee.Department} onChange={ onChange }/>
</InputGroup>
<InputGroup className="mb-3">
<Input type="text" placeholder="Age" name="Age"
id="Age" value={employee.Age}
onChange={ onChange } />
</InputGroup>
<InputGroup className="mb-4">
<Input type="text" placeholder="City" name="City"
id="City" value={employee.City}
onChange={ onChange } />
</InputGroup>
<InputGroup className="mb-4">
<Input type="text" placeholder="Country" name="Country"
id="Country" value={employee.Country}
onChange={ onChange } />
</InputGroup>
<InputGroup className="mb-4">
<Input type="text" placeholder="Gender" name="Gender"
id= "Gender" value={employee.Gender}
onChange={ onChange } />
</InputGroup>
<CardFooter className="p-4">
<Row>
<Col xs="12" sm="6">
<Button type="submit" className="btn btn-info mb-1" block>
<span>Save</span></Button>
</Col>
<Col xs="12" sm="6">
<Button className="btn btn-info mb-1" block>
<span>Cancel</span></Button>
</Col>
</Row>
</CardFooter>
</Form>
</CardBody>
</Card>
</Col>
</Row>
</Container>
</div>
)
}
export default Editemployee
Create a Table in the Database
Open SQL Server Management Studio, create a database named "dbcore," and in this database, create a table. Give that table a name like "Employees."
CREATE TABLE [dbo].[Employees](
[Id] [int] IDENTITY(1,1) NOT NULL,
[Name] [nvarchar](50) NULL,
[Department] [nvarchar](50) NULL,
[Age] [int] NULL,
[City] [nvarchar](50) NULL,
[Country] [nvarchar](50) NULL,
[Gender] [nvarchar](50) NULL,
CONSTRAINT [PK_Employees] PRIMARY KEY CLUSTERED
(
[Id] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
GO
Create a Asp.net Web API project
Now, open Visual Studio and create a new project.
Change the name to ReactHooks.
Make Web API the template.
Right-click the Models folder from Solution Explorer and go to Add >> New Item >> data.
Click on the ADO.NET Entity Data Model option and click Add.
Select EF Designer from the database and click the Next button. Add the connection properties, select database name on the next page, and click OK.
Check the Table checkbox. The internal options will be selected by default. Now, click the Finish button.
Now, our data model is successfully created.
Right-click the Models folder and add two classes — Emp and Response. Now, paste the following codes in these classes:
Emp class
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace ReactHooks.Models
{
public class Emp
{
public int Id { get; set; }
public string Name { get; set; }
public string Department { get; set; }
public int Age { get; set; }
public string City { get; set; }
public string Country { get; set; }
public string Gender { get; set; }
}
}
Response Class
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace ReactHooks.Models
{
public class Response
{
public string Status { get; set; }
public string Message { get; set; }
}
}
Right-click the Controllers folder and add a new controller. Name it "Hooks controller".
Complete Hooks Controller Code
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Web.Http;
using ReactHooks.Models;
namespace ReactHooks.Controllers
{
[RoutePrefix("Api/Hooks")]
public class HooksController : ApiController
{
CrudDemoEntities DB = new CrudDemoEntities();
[HttpPost]
public object CreateEmp(Emp e)
{
try
{
if (e.Id == 0)
{
Employee em = new Employee();
em.Name = e.Name;
em.Department = e.Department;
em.Age = e.Age;
em.City = e.City;
em.Country = e.Country;
em.Gender = e.Gender;
DB.Employees.Add(em);
DB.SaveChanges();
return new Response
{
Status = "Success",
Message = "Data Successfully"
};
}
else
{
var obj = DB.Employees.Where(x => x.Id == e.Id).ToList().FirstOrDefault();
if (obj.Id > 0)
{
obj.Name = e.Name;
obj.Department = e.Department;
obj.Age = e.Age;
obj.City = e.City;
obj.Country = e.Country;
obj.Gender = e.Gender;
DB.SaveChanges();
return new Response
{
Status = "Updated",
Message = "Updated Successfully"
};
}
}
}
catch (Exception ex)
{
Console.Write(ex.Message);
}
return new Response
{
Status = "Error",
Message = "Data not insert"
};
}
[HttpGet]
[Route("employee")]
public object Getrecord()
{
var emp = DB.Employees.ToList();
return emp;
}
[HttpDelete]
public object Deleteemployee(int id)
{
var obj = DB.Employees.Where(x => x.Id == id).ToList().FirstOrDefault();
DB.Employees.Remove(obj);
DB.SaveChanges();
return new Response
{
Status = "Delete",
Message = "Delete Successfuly"
};
}
[Route("employeedetails")]
[HttpGet]
public object employeedetailById(int id)
{
var obj = DB.Employees.Where(x => x.Id == id).ToList().FirstOrDefault();
return obj;
}
}
}
Now, let's enable CORS. Go to Tools, open the NuGet Package Manager, search for "CORS," and install the Microsoft.Asp.Net.WebApi.Cors package. Open Webapiconfig.cs and add the following lines:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Web.Http;
using Microsoft.Owin.Security.OAuth;
using Newtonsoft.Json.Serialization;
using System.Web.Http.Cors;
namespace ReactHooks
{
public static class WebApiConfig
{
public static void Register(HttpConfiguration config)
{
// Web API configuration and services
// Configure Web API to use only bearer token authentication.
config.SuppressDefaultHostAuthentication();
config.Filters.Add(new HostAuthenticationFilter(OAuthDefaults.AuthenticationType));
// Web API routes
config.MapHttpAttributeRoutes();
config.Routes.MapHttpRoute(
name: "DefaultApi",
routeTemplate: "api/{controller}/{id}",
defaults: new { id = RouteParameter.Optional }
);
EnableCorsAttribute cors = new EnableCorsAttribute("*", "*", "*");
config.EnableCors(cors);
}
}
}
Now, go to VS Code and run the project by using following command Npm start and check the port that you have your application running on.
Enter some data in the textbox and click on the Save button.
Click the Edit button to update values or the Delete button to delete the value.
