Laravel 弹头重复

Question

当我尝试使用相同的 slug 创建 post 时，它通常也会在更新时创建 post 同样的问题在这种情况下，我为 post

复制了 slug

我搜索了很多关于这个问题但我没有得到任何答案

有解决这个问题的想法吗？

型号

protected $fillable = [
    'title', 'slug', 'body',
];

控制器

    public function slug($string, $separator = '-') {
    if (is_null($string)) {
        return "";
    }

    $string = trim($string);

    $string = mb_strtolower($string, "UTF-8");;

    $string = preg_replace("/[^a-z0-9_\sءاأإآؤئبتثجحخدذرزسشصضطظعغفقكلمنهويةى]#u/", "", $string);

    $string = preg_replace("/[\s-]+/", " ", $string);

    $string = preg_replace("/[\s_]/", $separator, $string);

    return $string;
}
public function store(Request $request)
{
    $this->validate($request, array(
        'title'         => 'required|max:255',
        'slug'          => 'required|min:3|max:255|unique:posts',
        'body'          => 'required',
    ));
    $post = new Post;
    $post->title = $request->input('title');
    $post->slug = $this->slug($request->slug);
    $post->body = $request->input('body');
    $post->save();

    return redirect('admin/posts')->with('success', 'post is successfully saved');
}
    public function update(Request $request, $id)
{
    if ($request->isMethod('get'))
        return view('content.admin.post.index', ['url' => Post::find($id)]);
    else {
        $rules = [
            'title'         => 'required|max:255',
            'slug'          => 'required|min:3|max:255|unique:posts,slug,{$post->slug},slug',
            'body'          => 'required',
            ];
        $this->validate($request, $rules);
        $post = Post::find($id);

        $post->title = $request->title;
        $post->slug = $this->slug($request->slug);
        $post->body = $request->body;

        $post->save();

        return redirect('/admin/posts');
    }
}

Answer 1

为什么不在数据库迁移中将 slug 列设置为唯一？像这样：

$table->string('slug')->unique();

Answer 2

在将 slug 字段传递给验证器之前进行转换。

public function store(Request $request) { $request->slug = $this->slug($request->slug); $this->validate($request, array( 'title' => 'required|max:255', 'slug' => 'required|min:3|max:255|unique:posts', 'body' => 'required', )); $post = new Post; $post->title = $request->input('title'); $post->slug = $request->input('slug'); $post->body = $request->input('body'); $post->save(); return redirect('admin/posts')->with('success', 'post is successfully saved'); }

Laravel 弹头重复

Laravel Slug Duplicate

mysql

laravel

laravel-5

laravel-6

laravel-6.2