使用laravel上传多张图片时如何从另一个帖子表单中获取id？

Question

我有两种形式的博客文章和多图片上传器，基本上我想在博客文章表单中使用多图片上传器，但是我需要从博客文章表单中获取 ID，所以每个博客文章都有自己独特的一组图片。我知道您可以使用外键来建立两个表之间的链接，但我不确定如何执行此操作。现在博客文章表单只上传单个文件，所以我想要一种方法将多图像上传器逻辑使用到 PostController 中，然后保存到图像表中。非常感谢您的帮助。

图像控制器

    public function store(Request $request)
    {
        if(!$this->validate($request, [
            'id' => 'integer',
            'images.*' => 'sometimes|image|nullable|mimes:jpeg,png,jpg,gif,svg,webp|max:25000',
            'post_id' => 'required'
        ])) {
            return redirect()->back()->with('errors');
        }

        if($request->hasfile('images'))
        {
            foreach($request->file('images') as $image)
            {
                $filenameWithExt = $image->getClientOriginalName();

                $filename = pathinfo($filenameWithExt, PATHINFO_FILENAME);

                $extension = $image->getClientOriginalExtension();

                $fileNameToStore = $filename.'_'.time().'.'.$extension;

                $path = $image->storeAs('public/image', $fileNameToStore);

                $image = new Images;
                $image->images = $fileNameToStore;
                $image->post_id = $request->post_id;
                $image->save();
            }
        }

        return back()->with('Images have been uploaded!');
    }

后控制器

    public function store(Request $request)
    {
        // Validate posted form data
        $validated = $request->validate([
            'id' => 'integer',
            'vehicle'    => 'required|string',
            'h1' => 'required|string',
            'page_title' => 'required|string',
            'meta_description' => 'required|string',
            'image' => 'sometimes|image|nullable|max:5000',
            'content' => 'required|string',
            'active' => 'integer',
            'user_id' => 'required'
        ]);

        // Create slug from title
        $validated['slug'] = Str::slug($validated['vehicle'], '-');

        $validated['active'] = isset($request->active[0]) ? 1 : 0;

            if($request->hasFile('image'))
            {
                $filenameWithExt = $request->file('image')->getClientOriginalName();

                $filename = pathinfo($filenameWithExt, PATHINFO_FILENAME);

                $extension = $request->file('image')->getClientOriginalExtension();

                $fileNameToStore = $filename.'_'.time().'.'.$extension;

                $path = $request->file('image')->storeAs('public/image', $fileNameToStore);
            }else {
                $fileNameToStore = null;
            }

        // Create and save post with validated data
        $post = new Post;
        $post->id = $request->input('id');
        $post->vehicle = $request->input('vehicle');
        $post->slug = $request->input('slug');
        $post->h1 = $request->input('h1');
        $post->page_title = $request->input('page_title');
        $post->meta_description = $request->input('meta_description');
        $post->image = $fileNameToStore;
        $post->content = $request->input('content');
        $post->active = $validated['active'];
        $post->user_id = $request->input('user_id');
        $post->slug =  $validated['slug'];
        $post->save();

        // Redirect the user to the created post with a success notification
        return redirect(route('admin.posts.show', $post))->with('notification', 'Post created!');
    }

Answer 1

您可以将图像存储在您的PostController。

在您的PostController 中删除此部分（在store() 方法中）：

        if($request->hasFile('image'))
        {
            $filenameWithExt = $request->file('image')->getClientOriginalName();

            $filename = pathinfo($filenameWithExt, PATHINFO_FILENAME);

            $extension = $request->file('image')->getClientOriginalExtension();

            $fileNameToStore = $filename.'_'.time().'.'.$extension;

            $path = $request->file('image')->storeAs('public/image', $fileNameToStore);
        }else {
            $fileNameToStore = null;
        }

在创建post 之后，放入循环以保存图像。更改此行：

$image->post_id = $request->post_id;

到这里：

$image->post_id = $post->id;

首先使用PostController顶部的Images模型。您的新循环应如下所示：

    if($request->hasfile('images'))
    {
        foreach($request->file('images') as $image)
        {
            $filenameWithExt = $image->getClientOriginalName();

            $filename = pathinfo($filenameWithExt, PATHINFO_FILENAME);

            $extension = $image->getClientOriginalExtension();

            $fileNameToStore = $filename.'_'.time().'.'.$extension;

            $path = $image->storeAs('public/image', $fileNameToStore);

            $image = new Images;
            $image->images = $fileNameToStore;
            $image->post_id = $post->id;
            $image->save();
        }
    }

然后（根据模型中的关系）您可以通过以下方式访问图像：

@foreach($post->images as $image)
    <img src="public/image{{ $image->fileNameToStore">
@endforeach