{"id":22529,"date":"2024-11-21T14:21:50","date_gmt":"2024-11-21T06:21:50","guid":{"rendered":"https:\/\/fwq.ai\/blog\/22529\/"},"modified":"2024-11-21T14:21:50","modified_gmt":"2024-11-21T06:21:50","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8laravel%e4%b8%ad%e8%bf%9b%e8%a1%8c%e5%85%b3%e8%81%94%e6%a8%a1%e5%9e%8b%e7%9a%84%e5%88%a0%e9%99%a4%e6%93%8d%e4%bd%9c","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/22529\/","title":{"rendered":"\u5982\u4f55\u5728Laravel\u4e2d\u8fdb\u884c\u5173\u8054\u6a21\u578b\u7684\u5220\u9664\u64cd\u4f5c"},"content":{"rendered":"<p>\u5728laravel\u6846\u67b6\u4e2d\uff0c\u5173\u8054\u6a21\u578b\u662f\u4e00\u79cd\u7075\u6d3b\u3001\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u7528\u6765\u5904\u7406\u590d\u6742\u7684\u5173\u7cfb\u6570\u636e\u3002\u7136\u800c\uff0c\u5728\u5220\u9664\u5173\u8054\u6a21\u578b\u65f6\uff0c\u9700\u8981\u7279\u522b\u6ce8\u610f\uff0c\u4ee5\u514d\u51fa\u73b0\u4e0d\u5fc5\u8981\u7684\u8bef\u64cd\u4f5c\u548c\u6570\u636e\u5931\u8bef\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u5728laravel\u4e2d\u6b63\u786e\u5730\u8fdb\u884c\u5173\u8054\u6a21\u578b\u7684\u5220\u9664\u64cd\u4f5c\u3002<\/p>\n<p>\u4e00\u3001\u7406\u89e3\u5173\u8054\u6a21\u578b<\/p>\n<p>\u5728Laravel\u4e2d\uff0c\u5173\u8054\u6a21\u578b\u662f\u6307\u5728\u4e24\u4e2a\u6216\u591a\u4e2a\u6570\u636e\u8868\u4e4b\u95f4\u5efa\u7acb\u7684\u5173\u7cfb\u3002\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u8fd9\u4e9b\u5173\u7cfb\u88ab\u79f0\u4e3a\u201c\u5173\u8054\u5173\u7cfb\u201d\uff0c\u5982\u4e00\u5bf9\u4e00\u3001\u4e00\u5bf9\u591a\u3001\u591a\u5bf9\u591a\u7b49\u3002\u901a\u8fc7Laravel\u7684ORM\uff08\u5bf9\u8c61\u5173\u7cfb\u6620\u5c04\uff09\u6846\u67b6\uff0c\u6211\u4eec\u53ef\u4ee5\u8f7b\u677e\u5730\u521b\u5efa\u5404\u79cd\u5173\u8054\u6a21\u578b\uff0c\u5e76\u4e14\u975e\u5e38\u65b9\u4fbf\u5730\u8fdb\u884c\u589e\u5220\u6539\u67e5\u7b49\u5404\u79cd\u64cd\u4f5c\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u6211\u4eec\u6709\u4e24\u4e2a\u8868\u683c\u5206\u522b\u662f\u201c\u7528\u6237\u8868\u201d\u548c\u201c\u8ba2\u5355\u8868\u201d\uff0c\u5b83\u4eec\u4e4b\u95f4\u6709\u4e00\u4e2a\u201c\u4e00\u5bf9\u591a\u201d\u7684\u5173\u7cfb\uff0c\u5373\u4e00\u4e2a\u7528\u6237\u53ef\u4ee5\u62e5\u6709\u591a\u4e2a\u8ba2\u5355\u3002\u73b0\u5728\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7Laravel\u7684ORM\u6846\u67b6\u5b9a\u4e49\u8fd9\u4e24\u4e2a\u6a21\u578b\u4e4b\u95f4\u7684\u5173\u8054\u5173\u7cfb\uff0c\u4ee3\u7801\u5982\u4e0b:<\/p>\n<pre>    class User extends Model\n    {\n        public function orders()\n        {\n            return $this-&gt;hasMany(Order::class);\n        }\n    }\n\n    class Order extends Model\n    {\n        public function user()\n        {\n            return $this-&gt;belongsTo(User::class);\n        }\n    }<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u901a\u8fc7\u8fd9\u6837\u7684\u5173\u8054\u5173\u7cfb\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4e00\u4e2a\u7528\u6237\u5bf9\u8c61\uff0c\u975e\u5e38\u65b9\u4fbf\u5730\u83b7\u53d6\u5230\u8be5\u7528\u6237\u6240\u62e5\u6709\u7684\u6240\u6709\u8ba2\u5355\uff1a<\/p>\n<pre>$user = User::find(1);\n$orders = $user-&gt;orders;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u4e8c\u3001\u5173\u8054\u6a21\u578b\u7684\u5220\u9664<\/p>\n<p>\u73b0\u5728\uff0c\u6211\u4eec\u6765\u8003\u8651\u4e0b\u9762\u8fd9\u4e2a\u95ee\u9898\uff1a\u5982\u679c\u6211\u4eec\u8981\u5220\u9664\u4e00\u4e2a\u7528\u6237\uff0c\u90a3\u4e48\u4ed6\u6240\u62e5\u6709\u7684\u8ba2\u5355\u4e5f\u5e94\u8be5\u968f\u4e4b\u5220\u9664\uff0c\u5426\u5219\u5c31\u53ef\u80fd\u5b58\u5728\u201c\u5b64\u513f\u6570\u636e\u201d\u7684\u98ce\u9669\u3002\u8be5\u5982\u4f55\u5904\u7406\u8fd9\u4e2a\u95ee\u9898\u5462\uff1f\u5728Laravel\u4e2d\uff0c\u9488\u5bf9\u8fd9\u79cd\u95ee\u9898\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u201c\u7ea7\u8054\u5220\u9664\uff08Cascade Delete\uff09\u201d\u7684\u529f\u80fd\u6765\u5904\u7406\u3002<\/p>\n<p>1\u3001\u4f7f\u7528\u7ea7\u8054\u5220\u9664<\/p>\n<p>\u5728Laravel\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5728\u5173\u8054\u65b9\u6cd5\u4e2d\u4f7f\u7528\u201ccascade\u201d\u5c5e\u6027\u6765\u914d\u7f6e\u7ea7\u8054\u5220\u9664\uff0c\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre>    class User extends Model\n    {\n        public function orders()\n        {\n            return $this-&gt;hasMany(Order::class)-&gt;cascadeDelete();\n        }\n    }<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u8fd9\u6837\uff0c\u5f53\u6211\u4eec\u5220\u9664\u4e00\u4e2a\u7528\u6237\u65f6\uff0c\u4ed6\u6240\u62e5\u6709\u7684\u6240\u6709\u8ba2\u5355\u6570\u636e\u4e5f\u4f1a\u88ab\u81ea\u52a8\u5220\u9664\uff0c\u975e\u5e38\u65b9\u4fbf\u3002<\/p>\n<p>2\u3001\u624b\u52a8\u5220\u9664\u5173\u8054\u6a21\u578b<\/p>\n<p>\u9664\u4e86\u7ea7\u8054\u5220\u9664\u4e4b\u5916\uff0c\u6211\u4eec\u4e5f\u53ef\u4ee5\u624b\u52a8\u5220\u9664\u5173\u8054\u6a21\u578b\u3002\u5728Laravel\u4e2d\uff0c\u5220\u9664\u5173\u8054\u6a21\u578b\u7684\u65b9\u6cd5\u4f7f\u7528\u7684\u662f\u201cdelete\uff08\uff09\u201d\u65b9\u6cd5\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u53ef\u4ee5\u9996\u5148\u83b7\u53d6\u67d0\u4e2a\u7528\u6237\uff1a<\/p>\n<pre>$user = User::find(1);<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u7136\u540e\uff0c\u5bf9\u4e8e\u8be5\u7528\u6237\u6240\u62e5\u6709\u7684\u6240\u6709\u8ba2\u5355\uff0c\u6211\u4eec\u53ef\u4ee5\u624b\u52a8\u6267\u884c\u5220\u9664\u64cd\u4f5c\uff1a<\/p>\n<pre>foreach ($user-&gt;orders as $order) {\n   $order-&gt;delete();\n}<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u4f46\u662f\uff0c\u8fd9\u79cd\u65b9\u6cd5\u5b58\u5728\u4e00\u4e9b\u98ce\u9669\uff0c\u53ef\u80fd\u4f1a\u5728\u64cd\u4f5c\u8fc7\u7a0b\u4e2d\u5bfc\u81f4\u6570\u636e\u7684\u4e0d\u5b8c\u6574\u6027\u3002\u4f8b\u5982\uff0c\u5982\u679c\u6211\u4eec\u5728\u624b\u52a8\u5220\u9664\u67d0\u4e2a\u8ba2\u5355\u65f6\uff0c\u5b58\u5728\u5176\u4ed6\u5730\u65b9\u6b63\u5728\u4f7f\u7528\u8fd9\u4e2a\u8ba2\u5355\u7684\u60c5\u51b5\uff0c\u90a3\u4e48\u5c31\u53ef\u80fd\u51fa\u73b0\u6570\u636e\u4e22\u5931\u548c\u4e0d\u4e00\u81f4\u7684\u95ee\u9898\u3002<\/p>\n<p>3\u3001\u4f7f\u7528\u4e8b\u4ef6\u76d1\u542c\u5668<\/p>\n<p>\u4e3a\u4e86\u907f\u514d\u624b\u52a8\u5220\u9664\u5173\u8054\u6a21\u578b\u65f6\u53ef\u80fd\u51fa\u73b0\u7684\u95ee\u9898\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7Laravel\u7684\u4e8b\u4ef6\u76d1\u542c\u5668\u6765\u5904\u7406\u8fd9\u4e2a\u95ee\u9898\u3002\u4e8b\u4ef6\u76d1\u542c\u5668\u53ef\u4ee5\u5728\u6a21\u578b\u7684\u7279\u5b9a\u4e8b\u4ef6\u53d1\u751f\u65f6\uff0c\u81ea\u52a8\u6267\u884c\u4e00\u4e9b\u64cd\u4f5c\uff0c\u4f8b\u5982\u5728\u5220\u9664\u5173\u8054\u6a21\u578b\u65f6\uff0c\u81ea\u52a8\u5220\u9664\u76f8\u5173\u7684\u6570\u636e\u3002<\/p>\n<p>\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u5728\u6211\u4eec\u7684\u6a21\u578b\u7c7b\u4e2d\u6ce8\u518c\u4e00\u4e2a\u201cdeleting\u201d\u4e8b\u4ef6\uff0c\u5728\u8be5\u4e8b\u4ef6\u4e2d\u6267\u884c\u5220\u9664\u64cd\u4f5c\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre>    class User extends Model\n    {\n        protected static function boot()\n        {\n            parent::boot();\n\n            static::deleting(function($user) {\n                foreach ($user-&gt;orders as $order) {\n                    $order-&gt;delete();\n                }\n            });\n        }\n    }<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u5f53\u6211\u4eec\u8981\u5220\u9664\u67d0\u4e2a\u7528\u6237\u65f6\uff0c\u4f1a\u89e6\u53d1\u8be5\u7528\u6237\u5bf9\u8c61\u7684\u201cdeleting\u201d\u4e8b\u4ef6\uff0c\u4ece\u800c\u81ea\u52a8\u5220\u9664\u4e0e\u4e4b\u5173\u8054\u7684\u8ba2\u5355\u6570\u636e\u3002<\/p>\n<p>\u56db\u3001\u5b9e\u4f8b\u6f14\u793a<\/p>\n<p>\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u6f14\u793a\u5982\u4f55\u5728Laravel\u4e2d\u5b9e\u73b0\u5173\u8054\u6a21\u578b\u7684\u5220\u9664\u64cd\u4f5c\u3002\u5047\u8bbe\u6211\u4eec\u6709\u4e24\u4e2a\u8868\u683c\u201cusers\u201d\u548c\u201corders\u201d\uff0c\u5176\u4e2d\u201corders\u201d\u4e0e\u201cusers\u201d\u4e4b\u95f4\u5b58\u5728\u4e00\u5bf9\u591a\u7684\u5173\u7cfb\uff0c\u5373\u4e00\u4e2a\u7528\u6237\u53ef\u4ee5\u62e5\u6709\u591a\u4e2a\u8ba2\u5355\u3002<\/p>\n<p>\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u5728\u8fd9\u4e24\u4e2a\u8868\u683c\u4e4b\u95f4\u5efa\u7acb\u5173\u8054\u6a21\u578b\uff0c\u5e76\u4f7f\u7528Laravel\u7684ORM\u6846\u67b6\u63d0\u4f9b\u7684\u201ccascadeDelete\u201d\u65b9\u6cd5\u6765\u5b9e\u73b0\u7ea7\u8054\u5220\u9664\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre>    class User extends Model\n    {\n        public function orders()\n        {\n            return $this-&gt;hasMany(Order::class)-&gt;cascadeDelete();\n        }\n    }\n\n    class Order extends Model\n    {\n        public function user()\n        {\n            return $this-&gt;belongsTo(User::class);\n        }\n    }<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u5c06\u201cUser\u201d\u4e0e\u201cOrder\u201d\u4e24\u4e2a\u6a21\u578b\u4e4b\u95f4\u5efa\u7acb\u4e86\u4e00\u5bf9\u591a\u7684\u5173\u7cfb\uff0c\u5e76\u4e14\u4f7f\u7528\u4e86\u201ccascadeDelete()\u201d\u65b9\u6cd5\u6765\u5b9e\u73b0\u7ea7\u8054\u5220\u9664\u3002<\/p>\n<p>\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u7f16\u5199\u4e00\u4e2a\u6d4b\u8bd5\u4ee3\u7801\u6765\u6f14\u793a\u5982\u4f55\u4f7f\u7528\u8fd9\u4e2a\u5173\u8054\u5173\u7cfb\u3002\u9996\u5148\uff0c\u6211\u4eec\u521b\u5efa\u4e00\u4e2a\u201cUser\u201d\u5bf9\u8c61\u5e76\u4fdd\u5b58\u5230\u6570\u636e\u5e93\u4e2d\uff1a<\/p>\n<pre>$user = new User;\n$user-&gt;name = 'test';\n$user-&gt;email = 'test@example.com';\n$user-&gt;save();<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u7136\u540e\uff0c\u6211\u4eec\u5f80\u8be5\u7528\u6237\u4e0b\u9762\u6dfb\u52a0\u4e09\u4e2a\u8ba2\u5355\uff1a<\/p>\n<pre>$user-&gt;orders()-&gt;createMany([\n    ['product' =&gt; 'A', 'price' =&gt; 100],\n    ['product' =&gt; 'B', 'price' =&gt; 200],\n    ['product' =&gt; 'C', 'price' =&gt; 300],\n]);<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u73b0\u5728\uff0c\u6211\u4eec\u4f7f\u7528Laravel\u7684ORM\u6846\u67b6\u63d0\u4f9b\u7684\u201cdelete()\u201d\u65b9\u6cd5\u6765\u5220\u9664\u8be5\u7528\u6237\uff1a<\/p>\n<pre>$user-&gt;delete();<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u8fd9\u6837\uff0c\u8be5\u7528\u6237\u6240\u62e5\u6709\u7684\u6240\u6709\u8ba2\u5355\u6570\u636e\u4e5f\u4f1a\u88ab\u81ea\u52a8\u5220\u9664\uff0c\u975e\u5e38\u65b9\u4fbf\u3002<\/p>\n<p>\u4e94\u3001\u603b\u7ed3<\/p>\n<p>\u5728Laravel\u6846\u67b6\u4e2d\uff0c\u5904\u7406\u5173\u8054\u6a21\u578b\u6570\u636e\u662f\u5f00\u53d1\u4e2d\u7ecf\u5e38\u9047\u5230\u7684\u95ee\u9898\u3002\u901a\u8fc7\u5b66\u4e60\u672c\u6587\u4ecb\u7ecd\u7684\u5185\u5bb9\uff0c\u6211\u4eec\u53ef\u4ee5\u6b63\u786e\u5730\u5220\u9664\u5173\u8054\u6a21\u578b\u6570\u636e\uff0c\u5e76\u907f\u514d\u51fa\u73b0\u6570\u636e\u7684\u4e0d\u5b8c\u6574\u6027\u3002\u5982\u679c\u4f60\u60f3\u66f4\u597d\u5730\u638c\u63e1Laravel\u7684ORM\u6280\u672f\uff0c\u8bf7\u52a1\u5fc5\u591a\u591a\u5b9e\u8df5\u548c\u601d\u8003\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5982\u4f55\u5728Laravel\u4e2d\u8fdb\u884c\u5173\u8054\u6a21\u578b\u7684\u5220\u9664\u64cd\u4f5c\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728laravel\u6846\u67b6\u4e2d\uff0c\u5173\u8054\u6a21\u578b\u662f\u4e00\u79cd\u7075\u6d3b\u3001\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u7528\u6765\u5904\u7406\u590d\u6742\u7684\u5173\u7cfb\u6570\u636e\u3002\u7136\u800c\uff0c\u5728\u5220\u9664\u5173\u8054\u6a21\u578b\u65f6\uff0c\u9700\u8981\u7279\u522b\u6ce8\u610f\uff0c\u4ee5\u514d\u51fa\u73b0\u4e0d\u5fc5\u8981\u7684\u8bef\u64cd\u4f5c\u548c\u6570\u636e\u5931\u8bef\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u5728laravel\u4e2d\u6b63\u786e\u5730\u8fdb\u884c\u5173\u8054\u6a21\u578b\u7684\u5220\u9664\u64cd\u4f5c\u3002 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\u4f8b\u5982\uff0c\u6211\u4eec\u6709\u4e24\u4e2a\u8868\u683c\u5206\u522b\u662f\u201c\u7528\u6237\u8868\u201d\u548c\u201c\u8ba2\u5355\u8868\u201d\uff0c\u5b83\u4eec\u4e4b\u95f4\u6709\u4e00\u4e2a\u201c\u4e00\u5bf9\u591a\u201d\u7684\u5173\u7cfb\uff0c\u5373\u4e00\u4e2a\u7528\u6237\u53ef\u4ee5\u62e5\u6709\u591a\u4e2a\u8ba2\u5355\u3002\u73b0\u5728\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7Laravel\u7684ORM\u6846\u67b6\u5b9a\u4e49\u8fd9\u4e24\u4e2a\u6a21\u578b\u4e4b\u95f4\u7684\u5173\u8054\u5173\u7cfb\uff0c\u4ee3\u7801\u5982\u4e0b: class User extends Model { public function orders() { return $this-&gt;hasMany(Order::class); } } class Order extends Model { public function user() { return $this-&gt;belongsTo(User::class); } } \u767b\u5f55\u540e\u590d\u5236 \u901a\u8fc7\u8fd9\u6837\u7684\u5173\u8054\u5173\u7cfb\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4e00\u4e2a\u7528\u6237\u5bf9\u8c61\uff0c\u975e\u5e38\u65b9\u4fbf\u5730\u83b7\u53d6\u5230\u8be5\u7528\u6237\u6240\u62e5\u6709\u7684\u6240\u6709\u8ba2\u5355\uff1a $user = User::find(1); $orders = $user-&gt;orders; \u767b\u5f55\u540e\u590d\u5236 \u4e8c\u3001\u5173\u8054\u6a21\u578b\u7684\u5220\u9664 \u73b0\u5728\uff0c\u6211\u4eec\u6765\u8003\u8651\u4e0b\u9762\u8fd9\u4e2a\u95ee\u9898\uff1a\u5982\u679c\u6211\u4eec\u8981\u5220\u9664\u4e00\u4e2a\u7528\u6237\uff0c\u90a3\u4e48\u4ed6\u6240\u62e5\u6709\u7684\u8ba2\u5355\u4e5f\u5e94\u8be5\u968f\u4e4b\u5220\u9664\uff0c\u5426\u5219\u5c31\u53ef\u80fd\u5b58\u5728\u201c\u5b64\u513f\u6570\u636e\u201d\u7684\u98ce\u9669\u3002\u8be5\u5982\u4f55\u5904\u7406\u8fd9\u4e2a\u95ee\u9898\u5462\uff1f\u5728Laravel\u4e2d\uff0c\u9488\u5bf9\u8fd9\u79cd\u95ee\u9898\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u201c\u7ea7\u8054\u5220\u9664\uff08Cascade Delete\uff09\u201d\u7684\u529f\u80fd\u6765\u5904\u7406\u3002 1\u3001\u4f7f\u7528\u7ea7\u8054\u5220\u9664 \u5728Laravel\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5728\u5173\u8054\u65b9\u6cd5\u4e2d\u4f7f\u7528\u201ccascade\u201d\u5c5e\u6027\u6765\u914d\u7f6e\u7ea7\u8054\u5220\u9664\uff0c\u4ee3\u7801\u5982\u4e0b\uff1a class User extends Model { public function orders() { return $this-&gt;hasMany(Order::class)-&gt;cascadeDelete(); 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