\u5728laravel\u5f00\u53d1\u4e2d\uff0c\u591a\u8868\u8054\u67e5\u662f\u5e38\u89c1\u7684\u64cd\u4f5c\u3002\u8054\u67e5\u53ef\u4ee5\u4f7f\u591a\u4e2a\u8868\u7684\u6570\u636e\u6309\u7167\u7279\u5b9a\u6761\u4ef6\u8fdb\u884c\u7ec4\u5408\uff0c\u5e76\u8fd4\u56de\u6240\u9700\u6570\u636e\u7684\u7ed3\u679c\u96c6\u3002\u5728laravel\u4e2d\u5b9e\u73b0\u591a\u8868\u8054\u67e5\u9700\u8981\u7528\u5230eloquent orm\u63d0\u4f9b\u7684\u5f3a\u5927\u529f\u80fd\u3002\u672c\u6587\u5c06\u4f1a\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528laravel\u591a\u8868\u8054\u67e5\u3002<\/p>\n
Laravel\u7684Eloquent ORM\u662f\u4e00\u79cd\u5bf9\u8c61\u5173\u7cfb\u6620\u5c04\uff08ORM\uff09\u6280\u672f\uff0c\u5b83\u63d0\u4f9b\u4e86\u4e00\u4e2a\u7075\u6d3b\u3001\u7b80\u5355\u7684\u65b9\u5f0f\u6765\u8bbf\u95ee\u548c\u64cd\u4f5c\u6570\u636e\u5e93\u3002Eloquent ORM\u901a\u8fc7\u5c06\u6570\u636e\u5e93\u8868\u6620\u5c04\u5230\u5bf9\u8c61\u6765\u5b9e\u73b0\u8fd9\u4e00\u76ee\u7684\u3002\u8fd9\u4e9b\u5bf9\u8c61\u53ef\u4ee5\u901a\u8fc7PHP\u4ee3\u7801\u6765\u64cd\u4f5c\uff0c\u5e76\u5c06\u5176\u72b6\u6001\u6301\u4e45\u4fdd\u5b58\u5230\u6570\u636e\u5e93\u4e2d\u3002ORM\u7684\u4e3b\u8981\u4f18\u70b9\u662f\u5b83\u5c06\u590d\u6742\u7684SQL\u8bed\u53e5\u8f6c\u6362\u4e3a\u7b80\u5355\u7684\u5bf9\u8c61\u65b9\u6cd5\u8c03\u7528\uff0c\u56e0\u6b64\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u4e13\u6ce8\u4e8e\u4ee3\u7801\u903b\u8f91\uff0c\u800c\u4e0d\u662fSQL\u8bed\u53e5\u3002<\/p>\n
Laravel\u63d0\u4f9b\u4e86\u591a\u79cd\u65b9\u6cd5\u6765\u5b9e\u73b0\u591a\u8868\u8054\u67e5\u3002\u5176\u4e2d\uff0c\u6700\u5e38\u89c1\u7684\u65b9\u6cd5\u662f\u901a\u8fc7\u4f7f\u7528Eloquent\u5173\u8054\u6027\u5b9e\u73b0\u3002\u7531\u4e8eLaravel\u7684Eloquent ORM\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u5173\u8054\u6027\u529f\u80fd\uff0c\u56e0\u6b64\u5728\u591a\u8868\u67e5\u8be2\u4e2d\u4f7f\u7528Eloquent\u5173\u8054\u662f\u975e\u5e38\u65b9\u4fbf\u7684\u3002\u4e0b\u9762\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u591a\u8868\u67e5\u8be2\u65b9\u6cd5\u3002<\/p>\n
2.1 \u4e00\u5bf9\u4e00\u5173\u8054<\/p>\n
\u4e00\u5bf9\u4e00\u5173\u8054\u662f\u6307\u4e24\u4e2a\u8868\u4e4b\u95f4\u53ea\u6709\u4e00\u4e2a\u5339\u914d\u7684\u884c\u3002\u5728Laravel\u4e2d\u5b9e\u73b0\u4e00\u5bf9\u4e00\u5173\u8054\u975e\u5e38\u7b80\u5355\uff0c\u53ea\u9700\u5728\u6a21\u578b\u4e2d\u5b9a\u4e49hasOne\u6216belongsTo\u65b9\u6cd5\u5373\u53ef\u3002<\/p>\n
\u4f8b\u5982\uff0c\u8003\u8651\u4ee5\u4e0b\u4e24\u4e2a\u8868\uff1a<\/p>\n
users<\/p>\n
id | name | email | password | created_at | updated_at<\/p>\n
profiles<\/p>\n
id | user_id | phone | address | created_at | updated_at<\/p>\n
\u8981\u67e5\u627e\u4e00\u4e2a\u7528\u6237\u7684\u4e2a\u4eba\u8d44\u6599\uff0c\u53ef\u4ee5\u5728User\u6a21\u578b\u4e2d\u5b9a\u4e49\u4e00\u4e2ahasOne\u5173\u7cfb\uff1a<\/p>\n
class User extends Model
{<\/p>\n
public function profile()\n{\n return $this->hasOne('AppModelsProfile');\n}<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
}<\/p>\n
\u7136\u540e\uff0c\u5728Profile\u6a21\u578b\u4e2d\u5b9a\u4e49\u4e00\u4e2abelongsTo\u65b9\u6cd5\u6765\u6307\u5b9a\u5173\u8054\uff1a<\/p>\n
class Profile extends Model
{<\/p>\n
public function user()\n{\n return $this->belongsTo('AppModelsUser');\n}<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
}<\/p>\n
\u73b0\u5728\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u6765\u83b7\u53d6\u7528\u6237\u4ee5\u53ca\u4ed6\u7684\u4e2a\u4eba\u8d44\u6599\uff1a<\/p>\n
$user = User::with(‘profile’)->find(1);<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cwith\u65b9\u6cd5\u7528\u6765\u6267\u884cEager Loading\u3002\u8fd9\u5c06\u5728\u4e00\u6b21\u67e5\u8be2\u4e2d\u83b7\u53d6\u7528\u6237\u4ee5\u53ca\u4e0e\u4e4b\u76f8\u5173\u7684\u4e2a\u4eba\u8d44\u6599\uff0c\u4ece\u800c\u907f\u514d\u4e86\u591a\u4f59\u7684\u67e5\u8be2\u3002find\u65b9\u6cd5\u7528\u6765\u67e5\u627e\u6307\u5b9aID\u7684\u7528\u6237\u3002\u6ce8\u610f\uff0c\u5b9a\u4e49\u5173\u8054\u65f6\uff0cEloquent\u9ed8\u8ba4\u4f1a\u5c06\u5916\u952e\u547d\u540d\u4e3a\u5173\u8054\u6a21\u578b\u7684\u540d\u79f0+\u201c_id\u201d\uff0c\u5982\u6b64\u4f8b\u4e2d\u7684\u201cuser_id\u201d\u5b57\u6bb5\u3002<\/p>\n
2.2 \u4e00\u5bf9\u591a\u5173\u8054<\/p>\n
\u4e00\u5bf9\u591a\u5173\u8054\u662f\u6307\u4e00\u4e2a\u8868\u4e2d\u7684\u4e00\u884c\u53ef\u4ee5\u5173\u8054\u5230\u53e6\u4e00\u4e2a\u8868\u4e2d\u7684\u591a\u4e2a\u884c\u3002\u5728Laravel\u4e2d\u5b9e\u73b0\u4e00\u5bf9\u591a\u5173\u8054\u975e\u5e38\u7b80\u5355\uff0c\u53ea\u9700\u5728\u6a21\u578b\u4e2d\u5b9a\u4e49hasMany\u6216belongsTo\u65b9\u6cd5\u5373\u53ef\u3002<\/p>\n
\u4f8b\u5982\uff0c\u8003\u8651\u4ee5\u4e0b\u4e24\u4e2a\u8868\uff1a<\/p>\n
users<\/p>\n
id | name | email | password | created_at | updated_at<\/p>\n
posts<\/p>\n
id | user_id | title | body | created_at | updated_at<\/p>\n
\u8981\u67e5\u627e\u4e00\u4e2a\u7528\u6237\u7684\u6240\u6709\u6587\u7ae0\uff0c\u53ef\u4ee5\u5728User\u6a21\u578b\u4e2d\u5b9a\u4e49\u4e00\u4e2ahasMany\u5173\u7cfb\uff1a<\/p>\n
class User extends Model
{<\/p>\n
public function posts()\n{\n return $this->hasMany('AppModelsPost');\n}<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
}<\/p>\n
\u7136\u540e\uff0c\u5728Post\u6a21\u578b\u4e2d\u5b9a\u4e49\u4e00\u4e2abelongsTo\u65b9\u6cd5\u6765\u6307\u5b9a\u5173\u8054\uff1a<\/p>\n
class Post extends Model
{<\/p>\n
public function user()\n{\n return $this->belongsTo('AppModelsUser');\n}<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
}<\/p>\n
\u73b0\u5728\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u6765\u83b7\u53d6\u7528\u6237\u4ee5\u53ca\u4ed6\u7684\u6240\u6709\u6587\u7ae0\uff1a<\/p>\n
$user = User::with(‘posts’)->find(1);<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cEloquent\u5c06\u81ea\u52a8\u67e5\u627euser_id\u7b49\u4e8e\u5f53\u524d\u7528\u6237ID\u7684\u6240\u6709\u6587\u7ae0\uff0c\u5e76\u5c06\u5b83\u4eec\u8bbe\u7f6e\u4e3a\u7528\u6237\u6a21\u578b\u7684posts\u5c5e\u6027\u3002\u6ce8\u610f\uff0c\u5b9a\u4e49\u5173\u8054\u65f6\uff0cEloquent\u9ed8\u8ba4\u4f1a\u5c06\u5916\u952e\u547d\u540d\u4e3a\u5173\u8054\u6a21\u578b\u7684\u540d\u79f0+\u201c_id\u201d\uff0c\u5982\u6b64\u4f8b\u4e2d\u7684\u201cuser_id\u201d\u5b57\u6bb5\u3002<\/p>\n
2.3 \u591a\u5bf9\u591a\u5173\u8054<\/p>\n
\u591a\u5bf9\u591a\u5173\u8054\u662f\u6307\u4e24\u4e2a\u8868\u4e4b\u95f4\u53ef\u4ee5\u6709\u591a\u4e2a\u5339\u914d\u7684\u884c\u3002\u5728Laravel\u4e2d\u5b9e\u73b0\u591a\u5bf9\u591a\u5173\u8054\u9700\u8981\u4f7f\u7528belongsToMany\u65b9\u6cd5\u3002<\/p>\n
\u4f8b\u5982\uff0c\u8003\u8651\u4ee5\u4e0b\u4e24\u4e2a\u8868\uff1a<\/p>\n
users<\/p>\n
id | name | email | password | created_at | updated_at<\/p>\n
roles<\/p>\n
id | name | label | created_at | updated_at<\/p>\n
\u4e2d\u95f4\u8868roles_users<\/p>\n
id | user_id | role_id<\/p>\n
\u8981\u67e5\u627e\u6240\u6709\u5177\u6709\u6307\u5b9a\u89d2\u8272\u7684\u7528\u6237\uff0c\u53ef\u4ee5\u5728Role\u6a21\u578b\u4e2d\u5b9a\u4e49\u4e00\u4e2abelongsToMany\u5173\u7cfb\uff1a<\/p>\n
class Role extends Model
{<\/p>\n
public function users()\n{\n return $this->belongsToMany('AppModelsUser');\n}<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
}<\/p>\n
\u7136\u540e\uff0c\u5728User\u6a21\u578b\u4e2d\u4e5f\u5b9a\u4e49\u4e00\u4e2abelongsToMany\u65b9\u6cd5\u6765\u6307\u5b9a\u5173\u8054\uff1a<\/p>\n
class User extends Model
{<\/p>\n
public function roles()\n{\n return $this->belongsToMany('AppModelsRole');\n}<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
}<\/p>\n
\u73b0\u5728\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u6765\u83b7\u53d6\u6240\u6709\u5177\u6709\u6307\u5b9a\u89d2\u8272\u7684\u7528\u6237\uff1a<\/p>\n
$users = Role::with(‘users’)->where(‘name’, ‘admin’)->get();<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cwith\u65b9\u6cd5\u7528\u6765\u6267\u884cEager Loading\uff0cget\u65b9\u6cd5\u7528\u6765\u83b7\u53d6\u6240\u6709\u5177\u6709\u6307\u5b9a\u89d2\u8272\u7684\u7528\u6237\u3002\u6ce8\u610f\uff0c\u591a\u5bf9\u591a\u5173\u8054\u9700\u8981\u4e2d\u95f4\u8868\u7684\u5b58\u5728\uff0c\u5b83\u7528\u4e8e\u5c06\u4e24\u4e2a\u8868\u4e4b\u95f4\u7684\u5173\u7cfb\u4fdd\u5b58\u5230\u6570\u636e\u5e93\u4e2d\u3002<\/p>\n
\n- \u603b\u7ed3<\/li>\n<\/ol>\n
Laravel\u662f\u4e00\u4e2a\u529f\u80fd\u5f3a\u5927\u7684Web\u5f00\u53d1\u6846\u67b6\uff0c\u5b83\u63d0\u4f9b\u4e86\u8bb8\u591a\u65b9\u4fbf\u7684\u529f\u80fd\u6765\u7b80\u5316\u5f00\u53d1\u6d41\u7a0b\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662fEloquent ORM\u3002Eloquent ORM\u63d0\u4f9b\u4e86\u7b80\u5355\u800c\u6709\u529b\u7684\u65b9\u6cd5\u6765\u5904\u7406\u6570\u636e\u5e93\uff0c\u5305\u62ec\u591a\u8868\u8054\u67e5\u3002\u5982\u679c\u6211\u4eec\u719f\u6089\u4f7f\u7528Laravel\u7684Eloquent\u5173\u8054\u6027\uff0c\u5b9e\u73b0\u591a\u8868\u8054\u67e5\u5c31\u662f\u4e00\u4ef6\u7b80\u5355\u7684\u4e8b\u60c5\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662flaravel\u600e\u6837\u591a\u8868\u8054\u67e5\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":"
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