Undefined variable when using error is coming - php

Question

I have made a simple form when I am calling the form from api route it is showing an error that "errors" is an undefined variable when I am calling using web route it just works fine and shows no error. Why is this happening? Since error is a pre defined variable but why is it showing error.
Layout file:
#extends('layout')
#section('content')
<h1 class="title">Simple Form</h1>
<form method="POST" action="/website/atg/public/projects">
#csrf
<div class="field">
<label class="label" for="name">Name</label>
<div class="control">
<input type="text" class="input" name="name" placeholder="Enter Name" value="{{old('name')}}" required>
</div>
</div>
<div class="field">
<label class="label" for="email">E-mail</label>
<div class="control">
<input type="text" class="input" name="email" placeholder="Enter E-mail Address" value="{{old('email')}}" required>
</div>
</div>
<div class="field">
<label class="label" for="pincode">Pincode</label>
<div class="control">
<input type="text" class="input" name="pincode" placeholder="Enter Pincode" value="{{old('pincode')}}" required>
</div>
</div>
<div class="field">
<div class="control">
<button type="submit" class="button">Submit</button>
</div>
</div>
#if($errors->any())
<div class="notification">
<ul>
#foreach($errors->all() as $error)
<li>{{$error}}</li>
#endforeach
</ul>
</div>
#endif
</form>
#endsection
Routes file:
<?php
use Illuminate\Http\Request;
/*
|--------------------------------------------------------------------------
| API Routes
|--------------------------------------------------------------------------
|
| Here is where you can register API routes for your application. These
| routes are loaded by the RouteServiceProvider within a group which
| is assigned the "api" middleware group. Enjoy building your API!
|
*/
/*Route::middleware('auth:api')->get('/user', function (Request $request) {
return $request->user();
});
*/
Route::apiResource('projects','ATGController');
Controller file:
<?php
namespace App\Http\Controllers;
use App\Project;
use App\Mail\ProjectCreated;
use Illuminate\Support\Facades\Validator;
use Illuminate\Http\Request;
class ATGController extends Controller
{
/**
* Display a listing of the resource.
*
* #return \Illuminate\Http\Response
*/
public function index()
{
return view('projects.index');
}
/**
* Show the form for creating a new resource.
*
* #return \Illuminate\Http\Response
*/
public function create()
{
//
}
/**
* Store a newly created resource in storage.
*
* #param \Illuminate\Http\Request $request
* #return \Illuminate\Http\Response
*/
public function store(Request $request)
{
request()->validate([
'name'=>'required|unique:projects,name',
'email'=>'required|email|unique:projects,email',
'pincode'=>'required|digits:6'
]);
if ($validator->fails()) {
return redirect('/projects')
->withErrors($validator)
->withInput();
}
else{
$project=Project::create(request(['name','email','pincode']));
\Mail::to('sbansal1809#gmail.com')->send(
new ProjectCreated($project)
);
//echo '<script>alert("User added sucessfully!")</script>';
return response()->json($project);
}
}
/**
* Display the specified resource.
*
* #param \App\Project $project
* #return \Illuminate\Http\Response
*/
public function show(Project $project)
{
//
}
/**
* Show the form for editing the specified resource.
*
* #param \App\Project $project
* #return \Illuminate\Http\Response
*/
public function edit(Project $project)
{
//
}
/**
* Update the specified resource in storage.
*
* #param \Illuminate\Http\Request $request
* #param \App\Project $project
* #return \Illuminate\Http\Response
*/
public function update(Request $request, Project $project)
{
//
}
/**
* Remove the specified resource from storage.
*
* #param \App\Project $project
* #return \Illuminate\Http\Response
*/
public function destroy(Project $project)
{
//
}
}

Answer 1

you have to return validator fails like this, to be able to get $errors in your blade. Check below example for reference and change the code to your parameters
don't forget to import use Illuminate\Support\Facades\Validator;
public function store(Request $request){
$validator = Validator::make($request->all(), [
'name'=>'required|unique:projects,name',
'email'=>'required|email|unique:projects,email',
'pincode'=>'required|digits:6'
]);
if ($validator->fails()) {
return redirect('/projects/create')
->withErrors($validator)
->withInput();
}else{
$project=Project::create(request(['name','email','pincode']));
\Mail::to('sbansal1809#gmail.com')->send(
new ProjectCreated($project)
);
//echo '<script>alert("User added sucessfully!")</script>';
return response()->json($project);
}
}