Laravel 8: Attempt to read property "id" on null - laravel

Question

I am facing this error 'Attempt to read property "id" on null' in Laravel 8. It was working fine before but in my view I changed $user->id to $user->profile->id and now this is happening. I am logged in the app and I have changed my route accordingly to match profile id, I have also tried clearing cache etc.
Here is my Code:
User Model:
class User extends Authenticatable
{
use HasApiTokens, HasFactory, Notifiable;
/**
* The attributes that are mass assignable.
*
* #var string[]
*/
// protected $fillable = [
// 'name',
// 'email',
// 'password',
// ];
protected $table = 'users';
protected $guarded = [];
/**
* The attributes that should be hidden for serialization.
*
* #var array
*/
protected $hidden = [
'password',
'remember_token',
];
/**
* The attributes that should be cast.
*
* #var array
*/
protected $casts = [
'email_verified_at' => 'datetime',
];
public function setPasswordAttribute($password)
{
$this->attributes['password'] = bcrypt($password);
}
public function posts ()
{
return $this->hasMany(Post::class);
}
public function profile()
{
return $this->hasOne(Profile::class);
}
}
Profile Model:
class Profile extends Model
{
use HasFactory;
protected $table = 'profiles';
protected $guarded = [];
public function user()
{
return $this->belongsTo(User::class);
}
}
ProfilesController:
class ProfilesController extends Controller
{
public function show(User $user)
{
return view ('profiles.index', compact('user'));
}
public function edit(User $user)
{
return view ('profiles.index', compact('user'));
}
}
Route:
Route::get('profile/{profile}', [ProfilesController::class, 'show'])->middleware('auth');
Route::get('profile/{profile}/edit', [ProfilesController::class, 'edit'])->middleware('auth');
View:
<x-layout>
<section class="py-8 max-w-4xl mx-auto">
<h1 class="text-lg font-bold mb-8 pb-2 border-b">
#if ($user->id == auth()->user()->id)
Hello {{ $user->name }}, welcome to your profile.
#else
{{ $user->name }}'s Profile.
#endif
</h1>
<div class="flex">
<aside class="w-48 flex-shrink-0">
<h4 class="font-semibold mb-4">
Navigation
</h4>
<ul style="max-width: 75%">
<li>
View Profile
</li>
<li>
#if ($user->id == auth()->user()->id)
Edit Profile
#endif
</li>
</ul>
</aside>
<main class="flex-1">
<x-panel>
<div class="flex flex-col">
<div class="-my-2 overflow-x-auto sm:-mx-6 lg:-mx-8">
<div class="py-2 align-middle inline-block min-w-full sm:px-6 lg:px-8">
<div class="shadow overflow-hidden border-b border-gray-200 sm:rounded-lg">
<div class="flex flex-row grid-cols-12">
<div class="flex flex-col col-span-4 row-span-full justify-items-start flex-grow-0 flex-shrink-0 grid-cols-4">
<div class="flex flex-row">
<img src="http://i.pravatar.cc/60?u={{ $user->profile->id }}" alt="" width="" height="" class="rounded-full h-24 w-24 flex m-2">
</div>
</div>
<div class="flex flex-col col-span-8 justify-right grid-cols-8 text-sm">
<div class="flex flex-row">
<div class="flex flex-col col-span-2 font-semibold">
<div class="pt-3">Name:</div>
<div class="pt-3">Email:</div>
<div class="pt-3">About:</div>
</div>
<div class="flex flex-col col-span-10">
<div class="pt-3 pl-4 text-justify">{{ $user->profile->name }}</div>
<div class="pt-3 pl-4 text-justify">{{ $user->profile->email }}</div>
<div class="pt-3 pl-4 text-justify"><p>{{ $user->profile->description }}</p></div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</x-panel>
</main>
</div>
</section>

Answer 1

I think the problem is that you are passing a Profile model as indicated by your routes, but the method is looking for a User model.
Show and Edit have a User Model as a parameter. If you pass the Profile id, the method is gonna find the User model by id but with the id of the Profile model and not the user_id of the Profile model.
You will need to change the methods to:
public function show(Profile $profile)
{
$user = $profile->user;
return view ('profiles.index', compact('user'));
}
public function edit(Profile $profile)
{
$user = $profile->user;
return view ('profiles.index', compact('user'));
}
With this code the Profile model is found and via the relationship the User is obtained and passed to the view.

Answer 2

public function edit($id)
{
$table = Table::find($id);
return view('tables.edit', compact('table'));
}
public function update(Request $request, $id)
{
$table = Table::find($id);
$table->update($request->all());
return redirect('/tables');
}