What is REST API in Laravel?

GET: This method can be mapped to an action to get/retrieve the resource data,
POST: This method can be mapped to an action to create a new resources,
PUT: This method can be mapped to an action to update existing resources,
DELETE: This method can be mapped to an action delete the resource,
PATCH: This method can be mapped to an action to make partial update on a resource.

<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use Illuminate\Http\Request;

use App\Restapi;
class RestApiController extends Controller
{
public function index()
{
$data = Restapi::all();
//return $data;
return response()->json($data);
}


public function show(Request $request,$id)
{
$data = Restapi::find($id);
return response()->json($data);
}


public function store(Request $request)
{
$data = new Restapi;
//$data->name = Input::get('name');
$data->name = $request->Input('name');
$data->address = $request->Input('address');
$data->mobile = $request->Input('mobile');
$data->save();
//return $data;
return response()->json($data);

}


public function update(Request $request,$id)
{
$data = Restapi::find($id);
$data->name = $request->input('name');
$data->address = $request->input('address');
$data->mobile = $request->input('mobile');
$data->save();
//return $data;
return response()->json($data);
}

public function deleteinfo(Request $request,$id)
{
$data = Restapi::find($id);
$data->delete();
return response()->json(null, 204);
}
}

Route::get('restapi', 'admin\RestApiController@index');
Route::get('restapi-show/{id}', 'admin\RestApiController@show');
Route::post('restapi-save', 'admin\RestApiController@store');
Route::put('restapi-update/{id}', 'admin\RestApiController@update');
Route::delete('restapi-delete/{id}', 'admin\RestApiController@deleteinfo');

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Restapi extends Model
{
public $timestamp = true;
protected $fillable = ['name','address','mobile'];
}

<?php

namespace App\Http\Controllers\admin;


use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
use App\Student;

class ApiController extends Controller
{


/* public function index()
{
return view('admin.student-api');
}
*/

public function index()
{
return csrf_token();
}

public function getAllStudents() {

$students = Student::get()->toJson(JSON_PRETTY_PRINT);
return response($students, 200);

//$stud = Student::get();
//return response()->json($stud,200);


//$stud = Student::find('2');
//return response()->json($stud,200);

}

public function createStudent(Request $request) {

$student = new Student;
$student->name = $request->name;
$student->course = $request->course;
$student->save();

return response()->json([
"message" => "student record created"
], 201);

}

public function getStudent($id) {

if (Student::where('id', $id)->exists()) {
$student = Student::where('id', $id)->get()->toJson(JSON_PRETTY_PRINT);
return response($student, 200);
} else {
return response()->json([
"message" => "Student not found"
], 404);
}

}

public function updateStudent(Request $request, $id) {

if (Student::where('id', $id)->exists()) {
$student = Student::find($id);
$student->name = is_null($request->name) ? $student->name : $request->name;
$student->course = is_null($request->course) ? $student->course : $request->course;
$student->save();

return response()->json([
"message" => "records updated successfully"
], 200);
} else {
return response()->json([
"message" => "Student not found"
], 404);

}
}

public function deleteStudent($id){

if(Student::where('id', $id)->exists())
{
$student = Student::find($id);
$student->delete();

return response()->json([
"message" => "records deleted"
], 202);
} else {
return response()->json([
"message" => "Student not found"
], 404);
}


}


}