{"id":24911,"date":"2024-11-21T08:12:01","date_gmt":"2024-11-21T00:12:01","guid":{"rendered":"https:\/\/fwq.ai\/blog\/24911\/"},"modified":"2024-11-21T08:12:01","modified_gmt":"2024-11-21T00:12:01","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8laravel%e4%b8%ad%e5%ae%9e%e7%8e%b0%e6%9d%83%e9%99%90%e7%9a%84%e8%87%aa%e5%8a%a8%e5%88%86%e9%85%8d%e5%92%8c%e5%9b%9e%e6%94%b6","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/24911\/","title":{"rendered":"\u5982\u4f55\u5728Laravel\u4e2d\u5b9e\u73b0\u6743\u9650\u7684\u81ea\u52a8\u5206\u914d\u548c\u56de\u6536"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/887\/227\/169906701596224.jpg\" class=\"aligncenter\" title=\"\u5982\u4f55\u5728Laravel\u4e2d\u5b9e\u73b0\u6743\u9650\u7684\u81ea\u52a8\u5206\u914d\u548c\u56de\u6536\u63d2\u56fe\" alt=\"\u5982\u4f55\u5728Laravel\u4e2d\u5b9e\u73b0\u6743\u9650\u7684\u81ea\u52a8\u5206\u914d\u548c\u56de\u6536\u63d2\u56fe\" \/><\/p>\n<p>Laravel\u662f\u4e00\u4e2a\u5e7f\u6cdb\u4f7f\u7528\u7684PHP\u6846\u67b6\uff0c\u5176\u63d0\u4f9b\u4e86\u65b9\u4fbf\u7684\u5de5\u5177\u6765\u5b9e\u73b0\u50cf\u6743\u9650\u7ba1\u7406\u8fd9\u6837\u7684\u5e38\u89c1\u95ee\u9898\u3002\u5728\u8bb8\u591a\u5e94\u7528\u7a0b\u5e8f\u4e2d\uff0c\u9700\u8981\u5bf9\u7528\u6237\u7684\u6743\u9650\u8fdb\u884c\u7ec6\u7c92\u5ea6\u7684\u63a7\u5236\uff0c\u4ee5\u786e\u4fdd\u4ed6\u4eec\u53ea\u80fd\u8bbf\u95ee\u4ed6\u4eec\u9700\u8981\u8bbf\u95ee\u7684\u5185\u5bb9\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u63a2\u8ba8Laravel\u4e2d\u5982\u4f55\u81ea\u52a8\u5206\u914d\u548c\u56de\u6536\u6743\u9650\u3002\u540c\u65f6\uff0c\u6211\u4eec\u8fd8\u4f1a\u63d0\u4f9b\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n<p>1\u3001Laravel\u4e2d\u4f7f\u7528\u591a\u6001\u5173\u8054\u6765\u5b9e\u73b0\u6743\u9650\u81ea\u52a8\u5206\u914d\u548c\u56de\u6536<\/p>\n<p>Laravel\u7684Eloquent ORM\u63d0\u4f9b\u4e86\u591a\u6001\u5173\u8054\u7684\u529f\u80fd\uff0c\u8fd9\u610f\u5473\u7740\u6211\u4eec\u53ef\u4ee5\u5c06\u591a\u4e2a\u4e0d\u540c\u7684\u6a21\u578b\u4e0e\u540c\u4e00\u7ec4\u6570\u636e\u8fdb\u884c\u5173\u8054\u3002\u8fd9\u5bf9\u5b9e\u73b0\u6743\u9650\u81ea\u52a8\u5206\u914d\u548c\u56de\u6536\u975e\u5e38\u6709\u7528\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u5047\u8bbe\u6211\u4eec\u9700\u8981\u5bf9\u6211\u4eec\u7684\u5e94\u7528\u7a0b\u5e8f\u4e2d\u7684\u201c\u6587\u7ae0\u201d\u548c\u201c\u8bc4\u8bba\u201d\u8fdb\u884c\u6743\u9650\u63a7\u5236\u4ee5\u53ca\u5bf9\u7528\u6237\u8fdb\u884c\u5206\u914d\u89d2\u8272\u3002\u6211\u4eec\u53ef\u4ee5\u521b\u5efa\u4ee5\u4e0b\u56db\u4e2a\u6a21\u578b\uff1a<\/p>\n<ul>\n<li>User\uff08\u7528\u6237\uff09<\/li>\n<li>Article\uff08\u6587\u7ae0\uff09<\/li>\n<li>Comment\uff08\u8bc4\u8bba\uff09<\/li>\n<li>Role\uff08\u89d2\u8272\uff09<\/li>\n<\/ul>\n<p>\u7136\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u591a\u6001\u5173\u8054\u529f\u80fd\u6765\u5c06\u4e09\u4e2a\u6a21\u578b\u4e0e\u89d2\u8272\u8fdb\u884c\u5173\u8054\uff1a<\/p>\n<pre>class User extends Model\n{\n    public function roles()\n    {\n        return $this-&amp;gt;morphToMany(Role::class, 'model', 'model_has_roles');\n    }\n}\n\nclass Article extends Model\n{\n    public function roles()\n    {\n        return $this-&amp;gt;morphToMany(Role::class, 'model', 'model_has_roles');\n    }\n}\n\nclass Comment extends Model\n{\n    public function roles()\n    {\n        return $this-&amp;gt;morphToMany(Role::class, 'model', 'model_has_roles');\n    }\n}<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u8be5\u4f8b\u5b50\u4f7f\u7528\u4e86Laravel\u7684\u591a\u6001\u5173\u8054\u529f\u80fd\uff0c\u4f7f\u5f97\u6211\u4eec\u53ef\u4ee5\u5728\u4e09\u4e2a\u6a21\u578b\u4ee5\u53ca\u5b83\u4eec\u7684\u8bb0\u5f55\u4e0a\u5b9a\u4e49\u89d2\u8272\u5173\u7cfb\u3002\u4e0b\u4e00\u6b65\u662f\u521b\u5efa\u4e00\u4e2a\u4e2d\u95f4\u8868\u6765\u4fdd\u5b58\u8fd9\u4e9b\u5173\u7cfb\uff1a<\/p>\n<pre>class CreateModelHasRolesTable extends Migration\n{\n    public function up()\n    {\n        Schema::create('model_has_roles', function (Blueprint $table) {\n            $table-&amp;gt;unsignedBigInteger('role_id');\n            $table-&amp;gt;unsignedBigInteger('model_id');\n            $table-&amp;gt;string('model_type');\n            $table-&amp;gt;foreign('role_id')-&amp;gt;references('id')-&amp;gt;on('roles')-&amp;gt;onDelete('cascade');\n            $table-&amp;gt;primary(['role_id', 'model_id', 'model_type']);\n        });\n    }\n}<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u73b0\u5728\u6211\u4eec\u53ef\u4ee5\u5c06\u4e0a\u8ff0\u6a21\u578b\u4e0e\u76f8\u5e94\u7684\u89d2\u8272\u76f8\u5173\u8054\u4e86\u3002\u4f8b\u5982\uff0c\u5047\u8bbe\u6211\u4eec\u5c06\u201c\u4f5c\u8005\u201d\u89d2\u8272\u5206\u914d\u7ed9\u6587\u7ae0\u7684\u521b\u5efa\u8005\uff0c\u6211\u4eec\u53ef\u4ee5\u8fd9\u6837\u505a\uff1a<\/p>\n<pre>$article-&amp;gt;roles()-&amp;gt;syncWithoutDetaching([\n    Role::where('name', 'author')-&amp;gt;first()-&amp;gt;id\n]);<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u540c\u6837\u5730\uff0c\u521b\u5efa\u4e00\u4e2a\u65b0\u8bc4\u8bba\u5e76\u5c06\u201c\u8bc4\u8bba\u8005\u201d\u89d2\u8272\u5206\u914d\u7ed9\u8be5\u8bc4\u8bba\u7684\u521b\u5efa\u8005\uff0c\u53ef\u4ee5\u8fd9\u6837\u5b9e\u73b0\uff1a<\/p>\n<pre>$comment = new Comment();\n$comment-&amp;gt;content = 'This is a new comment.';\n$comment-&amp;gt;user_id = Auth::user()-&amp;gt;id;\n$comment-&amp;gt;save();\n$comment-&amp;gt;roles()-&amp;gt;syncWithoutDetaching([\n    Role::where('name', 'commenter')-&amp;gt;first()-&amp;gt;id\n]);<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u8fd9\u6837\u7684\u4ee3\u7801\u5141\u8bb8\u6211\u4eec\u4f7f\u7528\u89d2\u8272\u6765\u63a7\u5236\u8c01\u53ef\u4ee5\u6267\u884c\u54ea\u4e9b\u64cd\u4f5c\u3002\u73b0\u5728\uff0c\u6211\u4eec\u9700\u8981\u4e00\u4e2a\u65b9\u5f0f\u6765\u81ea\u52a8\u4e3a\u65b0\u7528\u6237\u548c\u4ed6\u4eec\u7684\u6587\u7ae0\u548c\u8bc4\u8bba\u5206\u914d\u9002\u5f53\u7684\u89d2\u8272\uff0c\u5e76\u5728\u8fd9\u4e9b\u8bb0\u5f55\u88ab\u5220\u9664\u65f6\u81ea\u52a8\u5220\u9664\u89d2\u8272\u5206\u914d\u3002<\/p>\n<p>2\u3001\u4f7f\u7528Laravel\u4e2d\u7684\u4e8b\u4ef6\u76d1\u542c\u5668\u6765\u5b9e\u73b0\u6743\u9650\u81ea\u52a8\u5206\u914d\u548c\u56de\u6536<\/p>\n<p>\u4e3a\u4e86\u5b9e\u73b0\u6743\u9650\u81ea\u52a8\u5206\u914d\u548c\u56de\u6536\uff0c\u6211\u4eec\u4f7f\u7528Laravel\u4e8b\u4ef6\u7cfb\u7edf\u4e2d\u7684\u4e8b\u4ef6\u76d1\u542c\u5668\u6765\u6355\u83b7\u6211\u4eec\u611f\u5174\u8da3\u7684\u4e8b\u4ef6\u3002\u4e8b\u4ef6\u76d1\u542c\u5668\u662f\u4e00\u79cd\u6ce8\u518c\u4e86\u5e94\u7528\u7a0b\u5e8f\u7279\u5b9a\u4e8b\u4ef6\u54cd\u5e94\u529f\u80fd\u7684\u673a\u5236\uff0c\u8fd9\u4e2a\u673a\u5236\u4f7f\u5f97\u6211\u4eec\u80fd\u591f\u975e\u5e38\u7075\u6d3b\u5730\u5bf9\u5e94\u7528\u7a0b\u5e8f\u7684\u4e0d\u540c\u4e8b\u4ef6\u505a\u51fa\u54cd\u5e94\u3002<\/p>\n<p>\u4f8b\u5982\uff0cLaravel\u63d0\u4f9b\u4e86UserCreating\u548cUserDeleting\u4e8b\u4ef6\uff0c\u8fd9\u4e9b\u4e8b\u4ef6\u5728\u521b\u5efa\u548c\u5220\u9664\u7528\u6237\u65f6\u81ea\u52a8\u89e6\u53d1\u3002\u6211\u4eec\u53ef\u4ee5\u5199\u4e00\u4e2a\u4e8b\u4ef6\u76d1\u542c\u5668\u6765\u5728\u7528\u6237\u521b\u5efa\u65f6\u521b\u5efa\u6240\u9700\u7684\u89d2\u8272\u5173\u7cfb\uff0c\u5e76\u5728\u5b83\u5220\u9664\u65f6\u5220\u9664\u6b64\u5173\u7cfb\u3002<\/p>\n<p>\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u5b9a\u4e49\u4e00\u4e2a\u65b0\u7684\u4e8b\u4ef6\u76d1\u542c\u5668\uff1a<\/p>\n<pre>class UserEventListener\n{\n    public function onUserCreating(UserCreating $event)\n    {\n        $user = $event-&amp;gt;user;\n        $roles = Role::where('name', 'user')-&amp;gt;get();\n\n        foreach ($roles as $role) {\n            $user-&amp;gt;roles()-&amp;gt;create([\n                'role_id' =&amp;gt; $role-&amp;gt;id,\n            ]);\n        }\n    }\n\n    public function onUserDeleting(UserDeleting $event)\n    {\n        $user = $event-&amp;gt;user;\n        $user-&amp;gt;roles()-&amp;gt;detach();\n    }\n}<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u6b64\u4e8b\u4ef6\u76d1\u542c\u5668\u5b9a\u4e49\u4e86\u4e24\u4e2a\u65b9\u6cd5\u3002\u4e00\u4e2a\u65b9\u6cd5\uff08onUserCreating\uff09\u5728\u7528\u6237\u521b\u5efa\u65f6\u81ea\u52a8\u89e6\u53d1\uff0c\u5e76\u5c06\u201c\u7528\u6237\u201d\u89d2\u8272\u5206\u914d\u7ed9\u8be5\u7528\u6237\u3002\u53e6\u4e00\u4e2a\u65b9\u6cd5\uff08onUserDeleting\uff09\u5728\u7528\u6237\u5220\u9664\u65f6\u81ea\u52a8\u89e6\u53d1\uff0c\u5e76\u5220\u9664\u4e0e\u8be5\u89d2\u8272\u76f8\u5173\u7684\u6240\u6709\u8bb0\u5f55\u3002<\/p>\n<p>\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u9700\u8981\u5728\u6211\u4eec\u7684\u5e94\u7528\u7a0b\u5e8f\u670d\u52a1\u63d0\u4f9b\u8005\u4e2d\u6ce8\u518c\u8fd9\u4e9b\u4e8b\u4ef6\u76d1\u542c\u5668\uff1a<\/p>\n<pre>class AppServiceProvider extends ServiceProvider\n{\n    protected $listen = [\n        UserCreating::class =&amp;gt; [\n            UserEventListener::class,\n        ],\n\n        UserDeleting::class =&amp;gt; [\n            UserEventListener::class,\n        ],\n    ];\n\n    public function boot()\n    {\n        \/\/\n    }\n}<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u73b0\u5728\uff0c\u5f53\u6211\u4eec\u521b\u5efa\u6216\u5220\u9664\u7528\u6237\u65f6\uff0c\u5c06\u81ea\u52a8\u6267\u884c\u9002\u5f53\u7684\u64cd\u4f5c\u3002\u5b89\u88c5\u89d2\u8272\u7684\u6700\u540e\u4e00\u6b65\u662f\u4e3a\u6587\u7ae0\u548c\u8bc4\u8bba\u5b9a\u4e49\u4e00\u4e2a\u7c7b\u4f3c\u7684\u4e8b\u4ef6\u76d1\u542c\u5668\u3002<\/p>\n<pre>class ArticleEventListener\n{\n    public function onArticleCreating(ArticleCreating $event)\n    {\n        $article = $event-&amp;gt;article;\n        $roles = Role::where('name', 'author')-&amp;gt;get();\n\n        foreach ($roles as $role) {\n            $article-&amp;gt;roles()-&amp;gt;create([\n                'role_id' =&amp;gt; $role-&amp;gt;id,\n            ]);\n        }\n    }\n\n    public function onArticleDeleting(ArticleDeleting $event)\n    {\n        $article = $event-&amp;gt;article;\n        $article-&amp;gt;roles()-&amp;gt;detach();\n    }\n}\n\nclass CommentEventListener\n{\n    public function onCommentCreating(CommentCreating $event)\n    {\n        $comment = $event-&amp;gt;comment;\n        $roles = Role::where('name', 'commenter')-&amp;gt;get();\n\n        foreach ($roles as $role) {\n            $comment-&amp;gt;roles()-&amp;gt;create([\n                'role_id' =&amp;gt; $role-&amp;gt;id,\n            ]);\n        }\n    }\n\n    public function onCommentDeleting(CommentDeleting $event)\n    {\n        $comment = $event-&amp;gt;comment;\n        $comment-&amp;gt;roles()-&amp;gt;detach();\n    }\n}<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u6211\u4eec\u540c\u6837\u9700\u8981\u5728\u670d\u52a1\u63d0\u4f9b\u8005\u4e2d\u5c06\u8fd9\u4e9b\u76d1\u542c\u5668\u6ce8\u518c\u4e3a\u76f8\u5e94\u7684\u4e8b\u4ef6\uff1a<\/p>\n<pre>class AppServiceProvider extends ServiceProvider\n{\n    protected $listen = [\n        UserCreating::class =&amp;gt; [\n            UserEventListener::class,\n        ],\n\n        UserDeleting::class =&amp;gt; [\n            UserEventListener::class,\n        ],\n\n        ArticleCreating::class =&amp;gt; [\n            ArticleEventListener::class,\n        ],\n\n        ArticleDeleting::class =&amp;gt; [\n            ArticleEventListener::class,\n        ],\n\n        CommentCreating::class =&amp;gt; [\n            CommentEventListener::class,\n        ],\n\n        CommentDeleting::class =&amp;gt; [\n            CommentEventListener::class,\n        ],\n    ];\n\n    public function boot()\n    {\n        \/\/\n    }\n}<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   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1\u3001Laravel\u4e2d\u4f7f\u7528\u591a\u6001\u5173\u8054\u6765\u5b9e\u73b0\u6743\u9650\u81ea\u52a8\u5206\u914d\u548c\u56de\u6536 Laravel\u7684Eloquent ORM\u63d0\u4f9b\u4e86\u591a\u6001\u5173\u8054\u7684\u529f\u80fd\uff0c\u8fd9\u610f\u5473\u7740\u6211\u4eec\u53ef\u4ee5\u5c06\u591a\u4e2a\u4e0d\u540c\u7684\u6a21\u578b\u4e0e\u540c\u4e00\u7ec4\u6570\u636e\u8fdb\u884c\u5173\u8054\u3002\u8fd9\u5bf9\u5b9e\u73b0\u6743\u9650\u81ea\u52a8\u5206\u914d\u548c\u56de\u6536\u975e\u5e38\u6709\u7528\u3002 \u4f8b\u5982\uff0c\u5047\u8bbe\u6211\u4eec\u9700\u8981\u5bf9\u6211\u4eec\u7684\u5e94\u7528\u7a0b\u5e8f\u4e2d\u7684\u201c\u6587\u7ae0\u201d\u548c\u201c\u8bc4\u8bba\u201d\u8fdb\u884c\u6743\u9650\u63a7\u5236\u4ee5\u53ca\u5bf9\u7528\u6237\u8fdb\u884c\u5206\u914d\u89d2\u8272\u3002\u6211\u4eec\u53ef\u4ee5\u521b\u5efa\u4ee5\u4e0b\u56db\u4e2a\u6a21\u578b\uff1a User\uff08\u7528\u6237\uff09 Article\uff08\u6587\u7ae0\uff09 Comment\uff08\u8bc4\u8bba\uff09 Role\uff08\u89d2\u8272\uff09 \u7136\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u591a\u6001\u5173\u8054\u529f\u80fd\u6765\u5c06\u4e09\u4e2a\u6a21\u578b\u4e0e\u89d2\u8272\u8fdb\u884c\u5173\u8054\uff1a class User extends Model { public function roles() { return $this-&amp;gt;morphToMany(Role::class, &#8216;model&#8217;, &#8216;model_has_roles&#8217;); } } class Article extends Model { public function roles() { return $this-&amp;gt;morphToMany(Role::class, &#8216;model&#8217;, &#8216;model_has_roles&#8217;); } } class Comment extends Model { public function roles() { return $this-&amp;gt;morphToMany(Role::class, &#8216;model&#8217;, &#8216;model_has_roles&#8217;); } } 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