this tutorials we are going to teach node js crud application how to do the basic crud operation those are create,update,delete,search,view.
Create the Node Js Project Type on type command prompt
npm initand press enter key.after that you have the fill configation of project.after done stuff you
will get the package.json file.
after that you have to install the following dependencies
- Express
- body-parser
After done the stuff you have to create the file server.js
Server.js
const express = require('express')
const server = express()
const port = 5000
const routes = require('./routes/routes')
server.use(express.json());
server.use(routes);
server.listen(port, () => {
console.log(`Server port ${port}`)
})inside the project create the folder routes inside the route folder create the page routes.js
routes.js
const express = require('express')
const router = express.Router()
const employee = require('./employee')
router.use('/employee',employee);
module.exports = routerinside the route folder create the file employee
employee
const express = require('express')
const employee = express.Router()
const employeeList = require('./db/employeeList')
const bodyp = require('body-parser')
employee.use(bodyp.json())
employee.use(bodyp.urlencoded({ extended : true}))
employee.get('/', (req, res) =>
{
if(employeeList)
{
res.send(employeeList)
}
else
{
res.status(404).send({msg : "Empty List"})
}
})
employee.get('/:id', (req, res) =>
{
const found = employeeList.some(employee => employee.id === parseInt(req.params.id));
if(found){
res.send(employeeList.filter(employee => employee.id === parseInt(req.params.id)))
}
else
{
res.status(404).send({msg: `${req.params.id} is not found in employee list`})
}
})
employee.post('/add', (req, res) =>
{
const employee = req.body
if(employee.id && employee.name && employee.address && employee.phone && employee.active)
{
employeeList.push(employee)
return res.send(employeeList)
}
else
{
res.status(400).send({msg: `member cannot save`})
}
})
employee.put('/:id', (req, res) =>
{
const updateEmployee = req.body
const found = employeeList.some(employee => employee.id === parseInt(req.params.id));
if(!found)
{
return res.status(400).send({msg: `member not found`})
}
if(employee.id && employee.name && employee.address && employee.phone && employee.active)
{
employeeList.push(employee)
return res.send(employeeList)
}
else
{
employeeList.forEach(employee =>{
if(employee.id === parseInt(req.params.id))
{
employee.name = updateEmployee.name ? updateEmployee.name : employee.name,
employee.address = updateEmployee.address ? updateEmployee.address : employee.address,
employee.phone = updateEmployee.phone ? updateEmployee.phone : employee.phone,
employee.active = updateEmployee.active ? updateEmployee.active : employee.active
return res.send(employeeList);
}
})
}
res.status(400).send({msg: `employeeList cannot update`})
})
employee.delete('/:id', (req, res) =>
{
const found = employeeList.some(employee => employee.id === parseInt(req.params.id))
if(found)
{
res.send(employeeList.filter(employee => employee.id !== parseInt(req.params.id)))
}
else
{
res.status(400).send({msg: `employee cannot delete`})
}
})
module.exports = employee
inside the route folder create a folder db inside the folder i created the file employeeList.js
employeeList.js
let employeeList = [
{
id : 1,
name : "raja",
address : "india",
phone : 2323232,
active : true
},
{
id : 2,
name : "kumar",
address : "india",
phone : 4353453,
active : true
},
{
id : 3,
name : "nira",
address : "india",
phone : 989879,
active : true
},
]
module.exports = employeeList