laravel 5.2: ErrorException: preg_replace(): Parameter stimmt nicht überein, pattern ist ein String, während replacement ein Array ist

Question

Ich bin neu bei Laravel und ich mache ein Projekt in Laravel 5.2 für meinen Studienzweck. Aber ich habe einige Fehler bei der Aktualisierung der Daten im Formular festgestellt. Die Einfüge-, Auswahl- und Löschabfragen funktionieren ohne Fehler. Aber während Update-Abfrage verwendet es Fehler wie unten angegeben zeigt:

Error in helpers.php Linie 683: preg_replace(): Parameter Mismatch, Muster ist eine Zeichenfolge, während Ersatz ist ein Array

in helpers.php line 683 
at HandleExceptions->handleError('2', 'preg_replace(): Parameter mismatch, pattern is a string while replacement is an array', 'F:\xampp\htdocs\multidatatechnologies.com\vendor\laravel\framework\src\Illuminate\Support\helpers.php', '683', array('search' => '\?', 'replace' => array(array('menutype' => 'Fast Food', 'status' => '1'), '2'), 'subject' => 'update `menutypes` set `0` = ? where `id` = ?', 'value' => array('menutype' => 'Fast Food', 'status' => '1'))) 
at preg_replace('/\?/', array('menutype' => 'Fast Food', 'status' => '1'), 'update `menutypes` set `0` = ? where `id` = ?', '1') in helpers.php line 683 
at str_replace_array('\?', array(array('menutype' => 'Fast Food', 'status' => '1'), '2'), 'update `menutypes` set `0` = ? where `id` = ?') in QueryException.php line 56 
at QueryException->formatMessage('update `menutypes` set `0` = ? where `id` = ?', array(array('menutype' => 'Fast Food', 'status' => '1'), '2'), object(PDOException)) in QueryException.php line 39 
at QueryException->__construct('update `menutypes` set `0` = ? where `id` = ?', array(array('menutype' => 'Fast Food', 'status' => '1'), '2'), object(PDOException)) in Connection.php line 653 
at Connection->runQueryCallback('update `menutypes` set `0` = ? where `id` = ?', array(array('menutype' => 'Fast Food', 'status' => '1'), '2'), object(Closure)) in Connection.php line 611 
at Connection->run('update `menutypes` set `0` = ? where `id` = ?', array(array('menutype' => 'Fast Food', 'status' => '1'), '2'), object(Closure)) in Connection.php line 416 
at Connection->affectingStatement('update `menutypes` set `0` = ? where `id` = ?', array(array('menutype' => 'Fast Food', 'status' => '1'), '2')) in Connection.php line 359 
at Connection->update('update `menutypes` set `0` = ? where `id` = ?', array(array('menutype' => 'Fast Food', 'status' => '1'), '2')) in Builder.php line 1904 
at Builder->update(array(array('menutype' => 'Fast Food', 'status' => '1'))) in AdminController.php line 84 
at AdminController->updatemenutype(object(Request)) 
at call_user_func_array(array(object(AdminController), 'updatemenutype'), array(object(Request))) in Controller.php line 76 
at Controller->callAction('updatemenutype', array(object(Request))) in ControllerDispatcher.php line 146 
at ControllerDispatcher->call(object(AdminController), object(Route), 'updatemenutype') in ControllerDispatcher.php line 94 
at ControllerDispatcher->Illuminate\Routing\{closure}(object(Request)) 
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 52 
at Pipeline->Illuminate\Routing\{closure}(object(Request)) 
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 103 
at Pipeline->then(object(Closure)) in ControllerDispatcher.php line 96 
at ControllerDispatcher->callWithinStack(object(AdminController), object(Route), object(Request), 'updatemenutype') in ControllerDispatcher.php line 54 
at ControllerDispatcher->dispatch(object(Route), object(Request), 'App\Http\Controllers\AdminController', 'updatemenutype') in Route.php line 174 
at Route->runController(object(Request)) in Route.php line 140 
at Route->run(object(Request)) in Router.php line 703 
at Router->Illuminate\Routing\{closure}(object(Request)) 
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 52 
at Pipeline->Illuminate\Routing\{closure}(object(Request)) in VerifyCsrfToken.php line 64 
at VerifyCsrfToken->handle(object(Request), object(Closure)) 
at call_user_func_array(array(object(VerifyCsrfToken), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 124 
at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) 
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 32 
at Pipeline->Illuminate\Routing\{closure}(object(Request)) in ShareErrorsFromSession.php line 49 
at ShareErrorsFromSession->handle(object(Request), object(Closure)) 
at call_user_func_array(array(object(ShareErrorsFromSession), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 124 
at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) 
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 32 
at Pipeline->Illuminate\Routing\{closure}(object(Request)) in StartSession.php line 62 
at StartSession->handle(object(Request), object(Closure)) 
at call_user_func_array(array(object(StartSession), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 124 
at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) 
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 32 
at Pipeline->Illuminate\Routing\{closure}(object(Request)) in AddQueuedCookiesToResponse.php line 37 
at AddQueuedCookiesToResponse->handle(object(Request), object(Closure)) 
at call_user_func_array(array(object(AddQueuedCookiesToResponse), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 124 
at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) 
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 32 
at Pipeline->Illuminate\Routing\{closure}(object(Request)) in EncryptCookies.php line 59 
at EncryptCookies->handle(object(Request), object(Closure)) 
at call_user_func_array(array(object(EncryptCookies), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 124 
at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) 
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 32 
at Pipeline->Illuminate\Routing\{closure}(object(Request)) 
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 103 
at Pipeline->then(object(Closure)) in Router.php line 705 
at Router->runRouteWithinStack(object(Route), object(Request)) in Router.php line 678 
at Router->dispatchToRoute(object(Request)) in Router.php line 654 
at Router->dispatch(object(Request)) in Kernel.php line 246 
at Kernel->Illuminate\Foundation\Http\{closure}(object(Request)) 
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 52 
at Pipeline->Illuminate\Routing\{closure}(object(Request)) in CheckForMaintenanceMode.php line 44 
at CheckForMaintenanceMode->handle(object(Request), object(Closure)) 
at call_user_func_array(array(object(CheckForMaintenanceMode), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 124 
at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) 
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 32 
at Pipeline->Illuminate\Routing\{closure}(object(Request)) 
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 103 
at Pipeline->then(object(Closure)) in Kernel.php line 132 
at Kernel->sendRequestThroughRouter(object(Request)) in Kernel.php line 99 
at Kernel->handle(object(Request)) in index.php line 54 

unten

<form class="form-horizontal" method="post" action="{{action('AdminController@updatemenutype')}}"> 
      <input type="hidden" name="_token" value="{{csrf_token()}}" /> 
      <input type="hidden" name="eid" value="{{$row->id}}" />       
       <div class="box-body"> 
       <label>Menu-Type Name:</label> 
       <div class="input-group"> 
        <div class="input-group-addon"> 
        <i class="fa fa-fire"></i> 
        </div> 
      <input type="text" name="menutype" class="form-control" value="{{$row->menutype}}" placeholder="Enter Menu-Type Name..." required="required" maxlength="100"> 
       </div><!-- /.input group --> 
       </div><!-- /.form group -->  
       <div class="box-body"> 
       <label>Publishing Status:</label> 
       <div class="input-group"> 
        <div class="input-group-addon"> 
        <i class="fa fa-globe"></i> 
        </div> 
        <select name="status" class="form-control" style="width: 100%;" required="required"> 
         <option value="{{$row->status}}" disabled="disabled"><?php if($row->status==1){echo "Yes"; }else{echo "No";} ?></option>       
         <option value="1">Yes</option> 
         <option value="0">No</option> 
        </select> 
       </div><!-- /.input group --> 
       </div><!-- /.form group -->      
       <div class="box-footer"> 
        <input type="reset" name="reset" class="btn btn-default" value="Cancel"> 
        <input type="submit" name="submit" class="btn btn-info pull-right" value="Edit Menu-Type"> 
       </div> 
       </form> 

unten ist meine entsprechende Funktion in der Steuerung geschrieben, um die Daten für die Aktualisierung (AdminController.php): wird der Code von mir für die view-Datei der updation Form (editmenutype.blade.php) geschrieben

public function editmenutype($id) { 
    $row = DB::table('menutypes')->where('id',$id)->first(); 
    return view('admin.editmenutype')->with('row',$row); 
} 

public function updatemenutype(Request $request) { 
    $post=$request->all(); 
    print_r($post); 
    //var_dump($post); 
    $v=\Validator::make($request->all(), 
    [ 
     'menutype' => 'required', 
     'status' => 'required', 
    ]); 
    if($v->fails()) 
    { 
     return redirect()->back()->withErrors($v->errors()); 
    } 
    else 
    { 
     $data = array(
     [ 
      'menutype' => $post['menutype'], 
      'status' => $post['status'], 
     ]); 
     $i = DB::table('menutypes')->where('id',$post['eid'])->update($data); 
     if($i > 0) 
     { 
      \Session::flash('message','* Menu-Type Updated Successfully.'); 
      return redirect('/admin/managemenutypes'); 
     } 
    } 
} 

unten ist der entsprechende Code i in der Routendatei angegeben (routes.php) die entsprechenden Seiten aufzurufen:

Route::get('admin/editmenutype/{id}','AdminController@editmenutype'); 
Route::post('admin/updatemenutype','AdminController@updatemenutype'); 

Warum dieser Fehler bei Update-Abfrage auftritt nur? Bitte helfen Sie mir mit einer stabilen und korrekten Methode, um dieses Problem zu beheben ... Vielen Dank im Voraus.

Answer 1

array() and \[\] are both declarations of an empty array.

In Ihrem AdminController.php finden Sie unter:

public function updatemenutype(Request $request) { 
    ... 
    if($v->fails()) 
    { 
     return redirect()->back()->withErrors($v->errors()); 
    } 
    else 
    { 
     //Error is here: array within array 
     $data = array(
     [ 
      'menutype' => $post['menutype'], 
      'status' => $post['status'], 
     ]); 
    ...   
} 

Stattdessen sollte es sein:

public function updatemenutype(Request $request) { 
    ... 
    if($v->fails()) 
    { 
     return redirect()->back()->withErrors($v->errors()); 
    } 
    else 
    { 
     //Single array declaration 
     $data = 
     [ 
      'menutype' => $post['menutype'], 
      'status' => $post['status'], 
     ]; 
    ...   
}