Route [student.update] not defined. using laravel 7 - php

Question

i am a beginner of laravel. i ran into the problem with Route [student.update] not defined. using laravel 7. when run the laravel project. what i tried so far i attached below.
i attached the controller and view and route file below i don't what was a problem.
Controller
public function edit(Student $student)
{
return view('edit')->with('student',$student);
}
public function update(Request $request, Student $student)
{
Student::update([
'name' => $request->name,
'phone' => $request->phone,
'address' => $request->address,
'created_at' => now(),
]);
return redirect()->route('student.index')->with('success', 'Student has been Updatedddd');
}
edit.blade.php
<form action="{{ route('student.update',$student->id) }}" method="POST">
#csrf
<div class="row">
<div class="col-xs-12 col-sm-12 col-md-12">
<div class="form-group">
<strong>Name:</strong>
<input type="text" name="name" value="{{ $student->name }}" class="form-control" placeholder="Name">
</div>
</div>
<div class="col-xs-12 col-sm-12 col-md-12">
<div class="form-group">
<strong>Phone:</strong>
<input class="form-control" name="phone" value="{{ $student->phone }}" placeholder="Phone"></textarea>
</div>
</div>
<div class="col-xs-12 col-sm-12 col-md-12">
<div class="form-group">
<strong>Address:</strong>
<input class="form-control" name="address" value="{{ $student->address }}" placeholder="Address"></textarea>
</div>
</div>
<div class="col-xs-12 col-sm-12 col-md-12 text-center">
<button type="submit" class="btn btn-primary">Submit</button>
</div>
</div>
</form>
index.blade.php
#extends('layout')
#section('content')
<div class="row">
<div class="col-lg-12 margin-tb">
<div class="pull-left">
<h2>Laravel 7 CRUD Example from scratch - ItSolutionStuff.com</h2>
</div>
<div class="pull-right">
<a class="btn btn-success" href="{{ route('student.create')}}"> Create New Student</a>
</div>
</div>
</div>
#if ($message = Session::get('success'))
<div class="alert alert-success">
<p>{{ $message }}</p>
</div>
#endif
<table class="table table-bordered">
<tr>
<th>No</th>
<th>Name</th>
<th>Phone</th>
<th>Address</th>
<th width="280px">Action</th>
</tr>
#foreach ($students as $student)
<tr>
<td>{{ $student->id }}</td>
<td>{{ $student->name }}</td>
<td>{{ $student->phone }}</td>
<td>{{ $student->address }}</td>
<td>
<a class="btn btn-primary" href="{{ route('student.edit',$student->id) }}">Edit</a>
<button type="submit" class="btn btn-danger">Delete</button>
</td>
</tr>
#endforeach
</table>
{!! $students->links() !!}
#endsection
Routes
Route::get('/students/{student}', 'StudentController#edit')->name('student.edit');
Route::get('/students/{student}', 'StudentController#update')->name('student.update');

Answer 1

Your update route is defined as a get route while your edit form is trying to submit a post request to the route
You should ideally have the update route defined as a PUT or PATCH route. And if you are using Laravel 8.x, then you should have FQCN for the controllers
//import use statements at the top
//use Illuminate\Support\Facades\Route;
//use App\Http\Controllers\StudentController;
Route::match(['PUT', 'PATCH'], '/students/{student}', [StudentController::class, 'update'])->name('student.update');
And then make a PUT or PATCH submit request from edit.blade.php
<form action="{{ route('student.update',$student->id) }}" method="POST">
#csrf
#method('PUT') //Method spoofing
<div class="row">
<div class="col-xs-12 col-sm-12 col-md-12">
<div class="form-group">
<strong>Name:</strong>
<input type="text" name="name" value="{{ $student->name }}" class="form-control" placeholder="Name">
</div>
</div>
<div class="col-xs-12 col-sm-12 col-md-12">
<div class="form-group">
<strong>Phone:</strong>
<input class="form-control" name="phone" value="{{ $student->phone }}" placeholder="Phone"></textarea>
</div>
</div>
<div class="col-xs-12 col-sm-12 col-md-12">
<div class="form-group">
<strong>Address:</strong>
<input class="form-control" name="address" value="{{ $student->address }}" placeholder="Address"></textarea>
</div>
</div>
<div class="col-xs-12 col-sm-12 col-md-12 text-center">
<button type="submit" class="btn btn-primary">Submit</button>
</div>
</div>
</form>
And change the controller method
public function update(Request $request, Student $student)
{
$student->update([
'name' => $request->name,
'phone' => $request->phone,
'address' => $request->address,
'created_at' => now(),
]);
return redirect()->route('student.index')->with('success', 'Student has been Updatedddd');
}