ErrorException: Creating default object from empty value - Laravel - php

Question

I have just got this error all the tries while updating my table data.
ErrorException: Creating default object from empty value
AdminController.php
public function update(Request $r, $post_id) {
$post = Post::find($post_id);
$post->post_title = $r->post_title;
$post->post_image = $r->post_image;
$post->post_details = $r->post_details;
$post->post_rating = $r->post_rating;
$post->id = $r->id;
$post->save();
return back();
}
My Resource Route
Route::resource('post', AdminController::class);
Blade File
<div class="edit-post-content">
<form action="{{ route('post.update',$list->post_id) }}" method="POST">
#csrf
#method('PUT')
<input type="hidden" name="id" value="{{$list->id}}">
<input type="hidden" name="post_rating" value="{{$list->post_rating}}">
<div class="mb-3">
Edit Title: <input class="form-control" name="post_title" type="text" id="exampleFormControlInput1" value="{{$list->post_title}}" aria-label="default input example">
</div>
<div class="mb-3">
Edit Description:
<textarea class="form-control" id="exampleFormControlTextarea1" name="post_details" rows="3">
{{ $list->post_details }}
</textarea>
</div>
<div>
<img src="{{asset('images/'.trim($list->post_image))}}" alt="" width="120px;">
Edit Photos:
<input id="formFileMultiple" class="form-control form-control-lg" name="post_image" type="file" value="{{ $list->post_image }}" multiple>
</div>
<button type="submit" class="btn btn-primary">Save Changes</button>
</form>
</div>
Could someone help me, please?

Answer 1

There is a chance that the model doesn't exist. You can add a check for this in your controller as follows:
public function update(Request $r, $post_id) {
$post = Post::find($post_id);
if (!$post) {
// You can add code to handle the case when the model isn't found like displaying an error message
return back();
}
$post->post_title = $r->post_title;
$post->post_image = $r->post_image;
$post->post_details = $r->post_details;
$post->post_rating = $r->post_rating;
$post->id = $r->id;
$post->save();
return back();
}