{"id":23498,"date":"2024-11-21T09:11:23","date_gmt":"2024-11-21T01:11:23","guid":{"rendered":"https:\/\/fwq.ai\/blog\/23498\/"},"modified":"2024-11-21T09:11:23","modified_gmt":"2024-11-21T01:11:23","slug":"laravel%e5%bc%80%e5%8f%91%ef%bc%9a%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8laravel-eloquent%e6%9e%84%e5%bb%ba%e6%a8%a1%e5%9e%8b%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/23498\/","title":{"rendered":"Laravel\u5f00\u53d1\uff1a\u5982\u4f55\u4f7f\u7528Laravel Eloquent\u6784\u5efa\u6a21\u578b\uff1f"},"content":{"rendered":"

\u662f\u4e00\u6b3e\u6d41\u884c\u7684php web\u6846\u67b6\uff0c\u7531\u4e8e\u5176\u7b80\u5355\u6613\u7528\uff0c\u5e7f\u53d7\u6b22\u8fce\u3002laravel\u6846\u67b6\u4ee5\u5176\u5b9e\u73b0\u5353\u8d8a\u7684eloquent orm\u800c\u8457\u79f0\uff0corm\u662fobject-relational mini\u6620\u5c04\uff0c\u652f\u6301\u4f7f\u7528php\u5b9a\u4e49\u6570\u636e\u5e93\u6a21\u578b\uff0c\u5e76\u6839\u636e\u8fd9\u4e9b\u6a21\u578b\u63d0\u4f9b\u8f7b\u677e\u7684\u6570\u636e\u5e93\u4ea4\u4e92\u65b9\u5f0f\u3002<\/p>\n

\u672c\u6587\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528Laravel Eloquent\u6784\u5efa\u6a21\u578b\uff0c\u4ee5\u5b9e\u73b0\u5feb\u901f\u53ef\u9760\u5730\u4e0e\u6570\u636e\u5e93\u8fdb\u884c\u4ea4\u4e92\u3002<\/p>\n

\u4ec0\u4e48\u662f Laravel Eloquent<\/p>\n

Eloquent ORM\u662fLaravel\u6846\u67b6\u5185\u7f6e\u7684\u4e00\u79cdORM\u7cfb\u7edf\uff0c\u5b83\u53ef\u4ee5\u8ba9\u4f60\u7528PHP\u4e0e\u6570\u636e\u5e93\u8fdb\u884c\u4ea4\u4e92\uff0c\u800c\u4e0d\u662f\u76f4\u63a5\u5728MySQL\u8bed\u53e5\u4e2d\u64cd\u4f5c\u6570\u636e\u3002 Eloquent\u6620\u5c04\u4e86\u4e00\u7cfb\u5217\u7684\u6570\u636e\u8868\u5230\u5bf9\u8c61\uff0c\u6240\u4ee5\u4f60\u53ef\u4ee5\u547d\u540d\u5e76\u64cd\u4f5c\u6570\u636e\u8868\u4e2d\u7684\u6bcf\u4e2a\u5b57\u6bb5\u800c\u4e0d\u5fc5\u76f4\u63a5\u6267\u884cSQL\u8bed\u53e5\u3002<\/p>\n

\u8981\u4f7f\u7528Laravel Eloquent ORM\uff0c\u4f60\u5fc5\u987b\u5728\u6784\u5efa\u6570\u636e\u5e93\u6a21\u578b\u4e4b\u524d\u5148\u914d\u7f6e\u6570\u636e\u5e93\u8fde\u63a5\uff0c\u5982\u4e0b\u6240\u793a\u3002<\/p>\n

<?php use IlluminateSupportFacadesDB;\n\n$connection = DB:\uff1aconnection\uff08\uff09;\n$name = $connection->getDatabaseName\uff08\uff09;<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4e00\u822c\u800c\u8a00\uff0cLaravel\u6846\u67b6\u5df2\u7ecf\u5728.env\u6587\u4ef6\u4e2d\u914d\u7f6e\u597d\u4e86\u6570\u636e\u5e93\u8fde\u63a5\uff0c\u5728\u672c\u5730\u5f00\u53d1\u4e2d\u4e00\u822c\u53ea\u9700\u4fdd\u6301\u9ed8\u8ba4\u8fde\u63a5\u5373\u53ef\u3002<\/p>\n
\u5982\u4f55\u4f7f\u7528 Laravel Eloquent \u6784\u5efa\u6a21\u578b<\/p>\n
Laravel Eloquent ORM\u63d0\u4f9b\u4e86\u4e00\u79cd\u7b80\u5355\u800c\u5f3a\u5927\u7684\u65b9\u5f0f\u6765\u5b9a\u4e49\u6a21\u578b\uff0c\u800c\u4e0d\u7528\u5199\u590d\u6742\u7684SQL\u8bed\u53e5\u3002<\/p>\n
\u5728Laravel\u4e2d\uff0c\u6bcf\u4e2aEloquent\u6a21\u578b\u90fd\u5173\u8054\u4e00\u4e2a\u6570\u636e\u5e93\u8868\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528php artisan\u547d\u4ee4\u521b\u5efa\u6570\u636e\u5e93\u8fc1\u79fb\u6587\u4ef6\u540e\uff0c\u4f7f\u7528php artisan make:model\u547d\u4ee4\u521b\u5efa\u4e00\u4e2aEloquent\u6a21\u578b\u3002<\/p>\n
\u4e0b\u9762\u7684\u793a\u4f8b\u5c55\u793a\u4e86\u5982\u4f55\u521b\u5efa\u4e00\u4e2a\u6a21\u578b\uff1a<\/p>\n
php artisan make:model Example<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8fd9\u5c06\u5728app\u76ee\u5f55\u4e0b\u521b\u5efa\u4e00\u4e2aExample.php\u6587\u4ef6\uff0c\u4ee5\u4e0b\u662f\u5177\u4f53\u7684\u4ee3\u7801\uff1a<\/p>\n
<?php namespace App;\n\nuse IlluminateDatabaseEloquentModel;\n\nclass Example extends Model\n{\n    \/\/\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4f7f\u7528\u8fd9\u4e2a\u7b80\u5355\u7684\u6a21\u578b\uff0c\u6211\u4eec\u53ef\u4ee5\u5f00\u59cb\u5b9a\u4e49\u5e76\u5efa\u6a21\u6570\u636e\u8868\uff0c\u5177\u4f53\u7684\u5efa\u6a21\u89c1\u4e0b\uff1a<\/p>\n
Schema::create(`example`, function ($table) {\n    $table-&gt;increments(`id`);\n    $table-&gt;string(`title`);\n    $table-&gt;string(`body`);\n    $table-&gt;timestamps();\n});<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5728\u5b9a\u4e49\u5b8c\u6a21\u578b\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7Eloquent\u7684\u67e5\u8be2\u6784\u5efa\u5668\u6784\u5efa\u67e5\u8be2\uff0c\u4e0b\u9762\u662f\u4e00\u4e2aLaravel Eloquent\u67e5\u8be2\u7684\u4f8b\u5b50\uff1a<\/p>\n
$example = Example::find(1);<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5728\u8be5\u67e5\u8be2\u4e2d\uff0cExample::find(1)\u8bfb\u53d6\u9ed8\u8ba4\u8868example\u4e2d\u7684\u8bb0\u5f55\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2aAppExample\u6a21\u578b\u5b9e\u4f8b\u3002\u5728\u6b64\u6a21\u578b\u5b9e\u4f8b\u4e0a\u6211\u4eec\u53ef\u4ee5\u6267\u884c\u5185\u90e8\u51fd\u6570\u6216\u5c5e\u6027\uff0c\u4f8b\u5982\uff1a<\/p>\n
$title = $example-&gt;title;<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4e0a\u8ff0\u4ee3\u7801\u4f1a\u8f93\u51fa\u8868\u4e2did\u4e3a1\u7684\u8bb0\u5f55\u7684title\u5217\u7684\u503c\u3002<\/p>\n
\u4e3a\u6570\u636e\u8868\u6a21\u578b\u6dfb\u52a0\u5173\u8054<\/p>\n
\u5728Laravel Eloquent ORM\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u6dfb\u52a0\u5173\u8054\u5173\u7cfb\u6765\u8868\u8fbe\u6570\u636e\u6a21\u578b\u4e4b\u95f4\u7684\u5173\u7cfb\uff0c\u4f8b\u5982\u4e0b\u8ff0\u4e24\u4e2a\u6a21\u578b\u4e4b\u95f4\u7684\u5173\u8054\uff1a<\/p>\n
class Country extends Model\n{\n    public function user()\n    {\n        return $this-&gt;hasMany(User::class);\n    }\n}\n\nclass User extends Model\n{\n    public function country()\n    {\n        return $this-&gt;belongsTo(Country::class);\n    }\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5728\u8fd9\u4e2a\u6a21\u578b\u4e2d\uff0c\u4e00\u4e2a\u56fd\u5bb6\u53ef\u4ee5\u6709\u591a\u4e2a\u7528\u6237\uff0c\u56e0\u6b64Country\u6a21\u578bhasMany\u5173\u8054\u7528\u6237\u6a21\u578b\uff1b\u53e6\u4e00\u65b9\u9762\uff0c\u4e00\u4e2a\u7528\u6237\u53ea\u80fd\u6765\u81ea\u4e00\u4e2a\u56fd\u5bb6\uff0c\u56e0\u6b64\u6a21\u578bUser\u4f7f\u7528belongsTo\u65b9\u6cd5\u4ece\u5c5e\u4e8e\u56fd\u5bb6\u6a21\u578b\u3002<\/p>\n
\u901a\u8fc7\u5b9a\u4e49\u8fd9\u4e9b\u5173\u7cfb\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u67e5\u8be2\u65f6\u4f7f\u7528with\u65b9\u6cd5\u8f7b\u677e\u5730\u83b7\u53d6\u76f8\u5e94\u7684\u5173\u8054\u6a21\u578b\uff0c\u4f8b\u5982\uff1a<\/p>\n
$countries = Country::with('user')-&gt;get();<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5728\u4e0a\u8ff0\u67e5\u8be2\u4e2d\uff0cCountry::with(‘user’)\u8fd4\u56de\u901a\u8fc7Country::user()\u5b9a\u4e49\u7684\u5173\u8054\u5173\u7cfb\u7684\u7528\u6237\u8bb0\u5f55\u3002\u53ef\u4ee5\u5728\u8fd4\u56de\u7684\u96c6\u5408\u4e2d\u8bbf\u95ee\u8fd9\u4e9b\u96c6\u5408\uff0c\u4f8b\u5982\uff1a<\/p>\n
foreach ($countries as $country) {\n    foreach ($country-&gt;user as $user) {\n        echo $user-&gt;name;\n    }\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u603b\u7ed3<\/p>\n
Laravel Eloquent ORM\u662fLaravel\u6846\u67b6\u7684\u6700\u4f73\u7279\u6027\u4e4b\u4e00\uff0c\u5b83\u7b80\u5316\u4e86\u5f00\u53d1\u4eba\u5458\u4e0e\u6570\u636e\u5e93\u4ea4\u4e92\u7684\u590d\u6742\u6027\u3002\u901a\u8fc7\u8bbe\u7f6e\u6570\u636e\u5e93\u8fde\u63a5\u3001\u521b\u5efa\u6a21\u578b\u5e76\u5b9a\u4e49\u5173\u8054\u5173\u7cfb\uff0c\u6211\u4eec\u53ef\u4ee5\u8f7b\u677e\u5730\u4e0e\u6570\u636e\u5e93\u8fdb\u884c\u4ea4\u4e92\u5e76\u4ece\u6570\u636e\u5e93\u4e2d\u68c0\u7d22\u6570\u636e\u3002\u5728\u4f7f\u7528Laravel\u65f6\uff0c\u8bf7\u8bb0\u4f4f\u4f7f\u7528Laravel Eloquent ORM\u4ee5\u4fbf\u66f4\u9ad8\u6548\u3001\u7cbe\u7b80\u5730\u6784\u5efa\u6570\u636e\u5e93\u6a21\u578b\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662fLaravel\u5f00\u53d1\uff1a\u5982\u4f55\u4f7f\u7528Laravel Eloquent\u6784\u5efa\u6a21\u578b\uff1f\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":"
\u662f\u4e00\u6b3e\u6d41\u884c\u7684php web\u6846\u67b6\uff0c\u7531\u4e8e\u5176\u7b80\u5355\u6613\u7528\uff0c\u5e7f\u53d7\u6b22\u8fce\u3002laravel\u6846\u67b6\u4ee5\u5176\u5b9e\u73b0\u5353\u8d8a\u7684eloquent orm\u800c\u8457\u79f0\uff0corm\u662fobject-relational mini\u6620\u5c04\uff0c\u652f\u6301\u4f7f\u7528php\u5b9a\u4e49\u6570\u636e\u5e93\u6a21\u578b\uff0c\u5e76\u6839\u636e\u8fd9\u4e9b\u6a21\u578b\u63d0\u4f9b\u8f7b\u677e\u7684\u6570\u636e\u5e93\u4ea4\u4e92\u65b9\u5f0f\u3002 \u672c\u6587\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528Laravel Eloquent\u6784\u5efa\u6a21\u578b\uff0c\u4ee5\u5b9e\u73b0\u5feb\u901f\u53ef\u9760\u5730\u4e0e\u6570\u636e\u5e93\u8fdb\u884c\u4ea4\u4e92\u3002 \u4ec0\u4e48\u662f Laravel Eloquent Eloquent ORM\u662fLaravel\u6846\u67b6\u5185\u7f6e\u7684\u4e00\u79cdORM\u7cfb\u7edf\uff0c\u5b83\u53ef\u4ee5\u8ba9\u4f60\u7528PHP\u4e0e\u6570\u636e\u5e93\u8fdb\u884c\u4ea4\u4e92\uff0c\u800c\u4e0d\u662f\u76f4\u63a5\u5728MySQL\u8bed\u53e5\u4e2d\u64cd\u4f5c\u6570\u636e\u3002 Eloquent\u6620\u5c04\u4e86\u4e00\u7cfb\u5217\u7684\u6570\u636e\u8868\u5230\u5bf9\u8c61\uff0c\u6240\u4ee5\u4f60\u53ef\u4ee5\u547d\u540d\u5e76\u64cd\u4f5c\u6570\u636e\u8868\u4e2d\u7684\u6bcf\u4e2a\u5b57\u6bb5\u800c\u4e0d\u5fc5\u76f4\u63a5\u6267\u884cSQL\u8bed\u53e5\u3002 \u8981\u4f7f\u7528Laravel Eloquent ORM\uff0c\u4f60\u5fc5\u987b\u5728\u6784\u5efa\u6570\u636e\u5e93\u6a21\u578b\u4e4b\u524d\u5148\u914d\u7f6e\u6570\u636e\u5e93\u8fde\u63a5\uff0c\u5982\u4e0b\u6240\u793a\u3002 <?php use IlluminateSupportFacadesDB; $connection = DB:\uff1aconnection\uff08\uff09; $name = $connection->getDatabaseName\uff08\uff09; \u767b\u5f55\u540e\u590d\u5236 \u4e00\u822c\u800c\u8a00\uff0cLaravel\u6846\u67b6\u5df2\u7ecf\u5728.env\u6587\u4ef6\u4e2d\u914d\u7f6e\u597d\u4e86\u6570\u636e\u5e93\u8fde\u63a5\uff0c\u5728\u672c\u5730\u5f00\u53d1\u4e2d\u4e00\u822c\u53ea\u9700\u4fdd\u6301\u9ed8\u8ba4\u8fde\u63a5\u5373\u53ef\u3002 \u5982\u4f55\u4f7f\u7528 Laravel Eloquent \u6784\u5efa\u6a21\u578b Laravel Eloquent ORM\u63d0\u4f9b\u4e86\u4e00\u79cd\u7b80\u5355\u800c\u5f3a\u5927\u7684\u65b9\u5f0f\u6765\u5b9a\u4e49\u6a21\u578b\uff0c\u800c\u4e0d\u7528\u5199\u590d\u6742\u7684SQL\u8bed\u53e5\u3002 \u5728Laravel\u4e2d\uff0c\u6bcf\u4e2aEloquent\u6a21\u578b\u90fd\u5173\u8054\u4e00\u4e2a\u6570\u636e\u5e93\u8868\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528php artisan\u547d\u4ee4\u521b\u5efa\u6570\u636e\u5e93\u8fc1\u79fb\u6587\u4ef6\u540e\uff0c\u4f7f\u7528php artisan make:model\u547d\u4ee4\u521b\u5efa\u4e00\u4e2aEloquent\u6a21\u578b\u3002 \u4e0b\u9762\u7684\u793a\u4f8b\u5c55\u793a\u4e86\u5982\u4f55\u521b\u5efa\u4e00\u4e2a\u6a21\u578b\uff1a php artisan make:model Example \u767b\u5f55\u540e\u590d\u5236 \u8fd9\u5c06\u5728app\u76ee\u5f55\u4e0b\u521b\u5efa\u4e00\u4e2aExample.php\u6587\u4ef6\uff0c\u4ee5\u4e0b\u662f\u5177\u4f53\u7684\u4ee3\u7801\uff1a <?php namespace App; use IlluminateDatabaseEloquentModel; class Example extends Model { \/\/ […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-23498","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/23498","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=23498"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/23498\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=23498"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=23498"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=23498"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}