php – Laravel 5：在扩展User的模型上查找函数

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我正在使用Laravel 5并且有多个模型(患者,治疗师)从用户模型扩展.
我在DB中有一些虚拟数据(很少有治疗师,很少有患者).
当我想通过id检索治疗师时,我尝试通过Therapist :: find($id)这样做,但得到一个例外： 

'Illuminate\Database\QueryException' with message 'sqlSTATE[23000]: 
     Integrity constraint violation: 1062 Duplicate entry '' for key
    'users_email_unique' (sql: insert into users`

几个问题：
1.为什么当我使用:: find函数时,它会尝试插入一个新用户？
2.如何在从User扩展的对象上使用:: find函数以获取每个模型的属性？

编辑

Ajax调用

/getTherapist

routes.PHP文件：

Route::get('/getTherapist','HomeController@getTherapist');

HomeController.PHP：

public function getTherapist()
{
    $user = Therapist::find(13);
    return $user->toArray();
}

完全例外：

> Next exception 'Illuminate\Database\QueryException' with message
> 'sqlSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry
> '' for key 'users_email_unique' (sql: insert into `users`
> (`updated_at`,`created_at`) values (2016-07-24 13:26:42,2016-07-24
> 13:26:42))' in
> C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Database\Connection.PHP:725
> Stack trace:
> #0 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Database\Connection.PHP(681):
> Illuminate\Database\Connection->runQueryCallback('insert into `us...',> Array,Object(Closure))
> #1 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Database\Connection.PHP(454):
> Illuminate\Database\Connection->run('insert into `us...',Array,> Object(Closure))
> #2 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Database\Connection.PHP(410):
> Illuminate\Database\Connection->statement('insert into `us...',Array)
> #3 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Database\Query\Processors\Processor.PHP(32):
> Illuminate\Database\Connection->insert('insert into `us...',Array)
> #4 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Database\Query\Builder.PHP(2055):
> Illuminate\Database\Query\Processors\Processor->processInsertGetId(Object(Illuminate\Database\Query\Builder),> 'insert into `us...','id')
> #5 [internal function]: Illuminate\Database\Query\Builder->insertGetId(Array,'id')
> #6 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Builder.PHP(1422):
> call_user_func_array(Array,Array)
> #7 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Model.PHP(1628):
> Illuminate\Database\Eloquent\Builder->__call('insertGetId',Array)
> #8 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Model.PHP(1628):
> Illuminate\Database\Eloquent\Builder->insertGetId(Array,'id')
> #9 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Model.PHP(1597):
> Illuminate\Database\Eloquent\Model->insertAndSetId(Object(Illuminate\Database\Eloquent\Builder),> Array)
> #10 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Model.PHP(1488):
> Illuminate\Database\Eloquent\Model->performInsert(Object(Illuminate\Database\Eloquent\Builder),> Array)
> #11 C:\wamp\www\clinic\vendor\zizaco\entrust\src\Entrust\Traits\EntrustUserTrait.PHP(28):
> Illuminate\Database\Eloquent\Model->save(Array)
> #12 C:\wamp\www\clinic\app\Therapist.PHP(16): App\User->save()
> #13 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Model.PHP(538):
> App\Therapist->__construct()
> #14 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Builder.PHP(628):
> Illuminate\Database\Eloquent\Model::hydrate(Array,NULL)
> #15 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Builder.PHP(316):
> Illuminate\Database\Eloquent\Builder->getModels(Array)
> #16 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Builder.PHP(286):
> Illuminate\Database\Eloquent\Builder->get(Array)
> #17 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Builder.PHP(167):
> Illuminate\Database\Eloquent\Builder->first(Array)
> #18 [internal function]: Illuminate\Database\Eloquent\Builder->find(13)
> #19 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Model.PHP(3505):
> call_user_func_array(Array,Array)
> #20 [internal function]: Illuminate\Database\Eloquent\Model->__call('find',Array)
> #21 [internal function]: App\Therapist->find(13)
> #22 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Model.PHP(3519):
> call_user_func_array(Array,Array)
> #23 C:\wamp\www\clinic\app\Http\Controllers\HomeController.PHP(93): Illuminate\Database\Eloquent\Model::__callStatic('find',Array)
> #24 C:\wamp\www\clinic\app\Http\Controllers\HomeController.PHP(93): App\Therapist::find(13)
> #25 [internal function]: App\Http\Controllers\HomeController->getTherapist()
> #26 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Routing\Controller.PHP(80):
> call_user_func_array(Array,Array)
> #27 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Routing\ControllerDispatcher.PHP(146):
> Illuminate\Routing\Controller->callAction('getTherapist',Array)
> #28 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Routing\ControllerDispatcher.PHP(94):
> Illuminate\Routing\ControllerDispatcher->call(Object(App\Http\Controllers\HomeController),> Object(Illuminate\Routing\Route),'getTherapist')
> #29 [internal function]: Illuminate\Routing\ControllerDispatcher->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
> #30 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Routing\Pipeline.PHP(52):
> call_user_func(Object(Closure),Object(Illuminate\Http\Request))
> #31 C:\wamp\www\clinic\app\Http\Middleware\Authenticate.PHP(28): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
> #32 [internal function]: App\Http\Middleware\Authenticate->handle(Object(Illuminate\Http\Request),> Object(Closure))
> #33 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.PHP(136):
> call_user_func_array(Array,Array)
> #34 [internal function]: Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
> #35 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Routing\Pipeline.PHP(32):
> call_user_func(Object(Closure),Object(Illuminate\Http\Request))
> #36 [internal function]: Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
> #37 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.PHP(103):
> call_user_func(Object(Closure),Object(Illuminate\Http\Request))
> #38 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Routing\ControllerDispatcher.PHP(96):
> Illuminate\Pipeline\Pipeline->then(Object(Closure))
> #39 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Routing\ControllerDispatcher.PHP(54):
> Illuminate\Routing\ControllerDispatcher->callWithinStack(Object(App\Http\Controllers\HomeController),Object(Illuminate\Http\Request),> 'getTherapist')
> #40 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Routing\Route.PHP(174):
> Illuminate\Routing\ControllerDispatcher->dispatch(Object(Illuminate\Routing\Route),> Object(Illuminate\Http\Request),'App\\Http\\Contro...',> 'getTherapist')
> #41 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Routing\Route.PHP(140):
> Illuminate\Routing\Route->runController(Object(Illuminate\Http\Request))
> #42 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Routing\Router.PHP(724):
> Illuminate\Routing\Route->run(Object(Illuminate\Http\Request))
> #43 [internal function]: Illuminate\Routing\Router->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
> #44 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Routing\Pipeline.PHP(52):
> call_user_func(Object(Closure),Object(Illuminate\Http\Request))
> #45 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Foundation\Http\Middleware\VerifyCsrfToken.PHP(64):
> Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
> #46 [internal function]: Illuminate\Foundation\Http\Middleware\VerifyCsrfToken->handle(Object(Illuminate\Http\Request),> Object(Closure))
> #47 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.PHP(136):
> call_user_func_array(Array,Array)
> #48 [internal function]: Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
> #49 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Routing\Pipeline.PHP(32):
> call_user_func(Object(Closure),Object(Illuminate\Http\Request))
> #50 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\View\Middleware\ShareErrorsFromSession.PHP(49):
> Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
> #51 [internal function]: Illuminate\View\Middleware\ShareErrorsFromSession->handle(Object(Illuminate\Http\Request),> Object(Closure))
> #52 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.PHP(136):
> call_user_func_array(Array,Array)
> #53 [internal function]: Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
> #54 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Routing\Pipeline.PHP(32):
> call_user_func(Object(Closure),Object(Illuminate\Http\Request))
> #55 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Session\Middleware\StartSession.PHP(62):
> Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
> #56 [internal function]: Illuminate\Session\Middleware\StartSession->handle(Object(Illuminate\Http\Request),> Object(Closure))
> #57 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.PHP(136):
> call_user_func_array(Array,Array)
> #58 [internal function]: Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
> #59 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Routing\Pipeline.PHP(32):
> call_user_func(Object(Closure),Object(Illuminate\Http\Request))
> #60 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse.PHP(37):
> Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
> #61 [internal function]: Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse->handle(Object(Illuminate\Http\Request),> Object(Closure))
> #62 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.PHP(136):
> call_user_func_array(Array,Array)
> #63 [internal function]: Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
> #64 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Routing\Pipeline.PHP(32):
> call_user_func(Object(Closure),Object(Illuminate\Http\Request))
> #65 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Cookie\Middleware\EncryptCookies.PHP(59):
> Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
> #66 [internal function]: Illuminate\Cookie\Middleware\EncryptCookies->handle(Object(Illuminate\Http\Request),> Object(Closure))
> #67 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.PHP(136):
> call_user_func_array(Array,Array)
> #68 [internal function]: Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
> #69 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Routing\Pipeline.PHP(32):
> call_user_func(Object(Closure),Object(Illuminate\Http\Request))
> #70 [internal function]: Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
> #71 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.PHP(103):
> call_user_func(Object(Closure),Object(Illuminate\Http\Request))
> #72 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Routing\Router.PHP(726):
> Illuminate\Pipeline\Pipeline->then(Object(Closure))
> #73 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Routing\Router.PHP(699):
> Illuminate\Routing\Router->runRouteWithinStack(Object(Illuminate\Routing\Route),> Object(Illuminate\Http\Request))
> #74 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Routing\Router.PHP(675):
> Illuminate\Routing\Router->dispatchToRoute(Object(Illuminate\Http\Request))
> #75 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Foundation\Http\Kernel.PHP(246):
> Illuminate\Routing\Router->dispatch(Object(Illuminate\Http\Request))
> #76 [internal function]: Illuminate\Foundation\Http\Kernel->Illuminate\Foundation\Http\{closure}(Object(Illuminate\Http\Request))
> #77 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Routing\Pipeline.PHP(52):
> call_user_func(Object(Closure),Object(Illuminate\Http\Request))
> #78 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Foundation\Http\Middleware\CheckForMaintenanceMode.PHP(44):
> Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
> #79 [internal function]: Illuminate\Foundation\Http\Middleware\CheckForMaintenanceMode->handle(Object(Illuminate\Http\Request),> Object(Closure))
> #80 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.PHP(136):
> call_user_func_array(Array,Array)
> #81 [internal function]: Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
> #82 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Routing\Pipeline.PHP(32):
> call_user_func(Object(Closure),Object(Illuminate\Http\Request))
> #83 [internal function]: Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
> #84 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.PHP(103):
> call_user_func(Object(Closure),Object(Illuminate\Http\Request))
> #85 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Foundation\Http\Kernel.PHP(132):
> Illuminate\Pipeline\Pipeline->then(Object(Closure))
> #86 C:\wamp\www\clinic\vendor\laravel\framework\src\Illuminate\Foundation\Http\Kernel.PHP(99):
> Illuminate\Foundation\Http\Kernel->sendRequestThroughRouter(Object(Illuminate\Http\Request))
> #87 C:\wamp\www\clinic\public\index.PHP(54): Illuminate\Foundation\Http\Kernel->handle(Object(Illuminate\Http\Request))
> #88 {main}

解决方法

你在Therapist Models中定义了__construct()方法,不是吗？
我猜你错过了$attributes param： 

public function __construct($attributes = array())
{
    parent::__construct($attributes);
    //do your construction stuff
}

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