Laravel 9数据库更新失败

Question

我正在使用Laravel 9建立一个博客，我的更新方法由于某些未知的原因无法更新

My code Samples

Model

class Anime extends Model
{
use HasFactory;
protected $table = 'anime';
protected $primaryKey = 'id';
protected $fillable = ['anime_title','user_id','blog_title','description','slug','anime_image_profile'];
public function blogInformation() {
return $this->hasMany(BlogInfo::class);
}
public function getRouteKeyName()
{
return 'slug';
}
//    protected $hidden = 'id';
}

Controller

public function update(ValidateAnimeBlogRequest  $request, $id)
{
$request->validated();
/*Update the details in the database by ID*/
$update_data = Anime::findOrFail($id);
$update_data = new Anime;
$update_data->anime_title = $request->input('anime_title');
$update_data->blog_title = $request->input('blog_title');
$update_data->user_id = auth()->user()->id;
$update_data->description = $request->input('description');
$update_data->slug = Str::slug($request->input('blog_title'));

/*Check if the user also wanted to update the image*/
if($request->hasFile('anime_image_profile')) {
$path_to_images = 'images/anime_image_profile/' . $update_data->anime_image_profile;
if(File::exists($path_to_images)) {
File::delete($path_to_images);
}
$new_file_name = '9anime' . '-' . time() . '-' . $request->name . '.' . $request->anime_image_profile->extension();
$request->anime_image_profile->move(public_path('images/anime_image_profile'), $new_file_name);
$update_data->anime_image_profile = $new_file_name;
}
if($update_data->update()) {
redirect('/');
}
dd('Error');
}

ValidateAnimeBlogRequest

public function rules()
{
return [
'anime_title' => 'required | min:2', new nameRegex,
'blog_title' => ['required','min:5', new nameRegex],
'description' => ['required','min:1000'],
'premiered' => ['required'],
'genre' => ['required', new nameRegex],
'licensors' => ['required', new nameRegex],
'studio' => ['required', new nameRegex],
'anime_image_profile' => 'required | mimes:jpeg,jpg,png | max:5408'
];
}

My blade file

<form enctype="multipart/form-data" autocomplete="off" action="/blog/{{$anime['id']}}" method="POST">
@method('PUT')
@csrf

我设置了一个自定义检查，以防万一

if($update_data->update()) {
redirect('/');
}
dd('Error');

我的网页上的输出是"Error" // appHttpControllersAnimeController.php:156

当我执行dd($update_data)时，我看到数据已经更新，但它没有被发送到数据库。

我尝试用$update_data->save()替换$update_data->update()，但现在在DB中创建新数据，而不是更新现有的

Answer 1

您可以将其保留为save()方法。只需更新上面创建新的Anime()实例的行，使其仅在无法通过上面行的$id找到记录时才创建。

public function update(ValidateAnimeBlogRequest  $request, $id)
{
$request->validated();
/*Update the details in the database by ID*/
$update_data = Anime::findOrFail($id);
if(!$update_data) {
$update_data = new Anime;
}
$update_data->anime_title = $request->input('anime_title');
$update_data->blog_title = $request->input('blog_title');
$update_data->user_id = auth()->user()->id;
$update_data->description = $request->input('description');
$update_data->slug = Str::slug($request->input('blog_title'));

/*Check if the user also wanted to update the image*/
if($request->hasFile('anime_image_profile')) {
$path_to_images = 'images/anime_image_profile/' . $update_data->anime_image_profile;
if(File::exists($path_to_images)) {
File::delete($path_to_images);
}
$new_file_name = '9anime' . '-' . time() . '-' . $request->name . '.' . $request->anime_image_profile->extension();
$request->anime_image_profile->move(public_path('images/anime_image_profile'), $new_file_name);
$update_data->anime_image_profile = $new_file_name;
}
if($update_data->save()) {
redirect('/');
}
dd('Error');
}

只有在没有找到记录时才会创建一个新的实例，并且不会给出一个新的数据库记录