Laravel 8 在 null 上调用成员函数 extension()

Question

在配置文件夹中将文件路径更改为 public 并正确设置模型后，我正在尝试上传 Laravel 8 中的图像。我收到此回复

Call to a member function extension() on null

我的产品控制器

 public function store(Request $request)
    {
        $file = $request->file('image');
        $name = Str::random(10);
        $url = Storage::putFileAs('images', $file, $name . '.' . $file->extension());

        $product = Product::create([
            'title' => $request -> input('title'),
            'description' => $request -> input('description'),
            'image' => env('APP_URL') . '/' . $url,
            'price' => $request -> input('price'),
        ]);

        return $product;
    }

我的模型

protected $guarded = ['id'];

迁移

public function up()
   {
        Schema::create('products', function (Blueprint $table) {
            $table->id();
            $table->string('title');
            $table->string('description')->nullable();
            $table->string('image');
            $table->decimal('price');
            $table->timestamps();
        });
    }

请问我做错了什么或者我做错了什么？

Answer 1

在创建产品之前确认您有一个文件。或者对所有必填字段进行适当的验证。

public function store(Request $request)
    {
        if (!$request->has('image')) {
            return response()->json(['message' => 'Missing file'], 422);
        }
        $file = $request->file('image');
        $name = Str::random(10);
        $url = Storage::putFileAs('images', $file, $name . '.' . $file->extension());

        $product = Product::create([
            'title' => $request -> input('title'),
            'description' => $request -> input('description'),
            'image' => env('APP_URL') . '/' . $url,
            'price' => $request -> input('price'),
        ]);

        return $product;
    }

Laravel 8 在 null 上调用成员函数 extension()

Laravel 8 Call to a member function extension() on null

php

laravel

eloquent

laravel-migrations

laravel-8