Question

尝试编辑数据后出现此错误。 CRUDRenderHelper.php第41行中的FatalErrorException：调用字符串上的成员函数fill（）

我的CarCategoriesController代码：

<?php

namespace App\Http\Controllers;

use App\Http\Requests;
use App\Models\CarCategory;
use Illuminate\Http\Request;
use Yajra\Datatables\Datatables;
use App\Http\Controllers\Base\MasterController;
use Route;
use Illuminate\View\View;

class CarCategoriesController extends MasterController
{
protected $indexView = 'CarCategories.index';
protected $createView = 'CarCategories.create';
protected $editView = 'CarCategories.create';
protected $routeBindModel = 'CarCategories'; //Route Model Binding name in   RouteServiceProvider
protected $redirectPageWhenFormSuccess = 'CarCategories.index'; //Route Name
protected $title = 'Car Categories';

public function save(Request $request, $obj = null) {

if (!$obj) {
    $obj = new CarCategory;
}
return $this->saveHandler($request, $obj);
}

//Must have this method if need datatable;
public function datatableBuilder($obj = null) {
return CarCategory::query();
} 
}

CRUDRenderHelper代码：

<?php

namespace App\Helpers\Traits;

use App\Helpers\Exceptions\ValidationException;
use App\Helpers\SessionHelper;
use DB;
use Exception;
use Illuminate\Http\Request;
use Laracasts\Flash\flash;
use Yajra\Datatables\Datatables;
use Illuminate\View\View; 


trait CRUDRenderHelper
{
public function render(View $view, $route = null, $obj = null, $method = 'POST') {
$title = $this->title;
$appName = $this->appName;
$action = $this->action;
return $view->with(compact('title', 'appName', 'route', 'obj', 'method', 'action'));
}

public function getFormRoute($obj = null) {

if ($obj) {
    $route = property_exists($this, 'updateFormRouteName') ? 
                $this->updateFormRouteName : $this-  >routeBindModel.'.update';
    return route($route, [$this->routeBindModel => $obj]);
}
$route = property_exists($this, 'saveFormRouteName') ? 
            $this->saveFormRouteName : $this->routeBindModel.'.store';
return route($route);
}

public function saveHandler(Request $request, $obj) {

try {

    DB::beginTransaction();
    $obj->fill($request->all());
    if (!$obj->save()) {
        throw new ValidationException($obj->errors());
    }
    DB::commit();
    return $this->sendSuccessResponse($request);
} catch (ValidationException $e) {
    DB::rollback();
    \Log::error($e->errors);
    return $this->sendErrorResponse($request, $e->errors);
} catch (Exception $e) {
    DB::rollback();
    \Log::error($e->getMessage());
    return $this->sendErrorResponse($request,'Unable to process. Please contact system Administrator');
}

}

public function sendErrorResponse(Request $request, $errors) {

if ($request->ajax()) {
    return response($errors, 400);
}
SessionHelper::setMessage($errors, 'danger');
return back()->withInput()->withErrors($errors);

}

public function sendSuccessResponse(Request $request) {

if ($request->ajax()) {
    return response('Success', 200);
}

flash('Process Successfully', 'success');

if (property_exists($this, 'redirectPageWhenFormSuccess')) {
    return redirect()->route($this->redirectPageWhenFormSuccess);
}

return back();
}

public function save(Request $request) {

return $this->saveHandler($request, $obj);
}

public function delete(Request $request, $obj) {

if (!$obj->delete()) {
    throw new ValidationException($obj->errors());
}
return $this->sendSuccessResponse($request);
}

/**
* [datatableBuilder Build model query here]
* @return [Object] [Laravel Eloquent Model]
*/
public function datatableBuilder($obj = null) {}

public function makeDatatable($obj) {

return Datatables::of($obj)
->addColumn('action', function ($model) {
        return $this->makeActionButtonsForDatatable($model);
})
->make(true);
}

/**
* [makeActionButtonsForDatatable Make buttons for datatables]
* @param  [Object] $model [Eloquent Model]
* @return [string]        [HTML script]
*/
public function makeActionButtonsForDatatable($model) {
$routeShow = property_exists($this, 'showRouteName') ? 
            $this->showRouteName : $this->routeBindModel.'.show';
$routeEdit = property_exists($this, 'editRouteName') ? 
            $this->editRouteName : $this->routeBindModel.'.edit';
$routeDelete = property_exists($this, 'deleteRouteName') ? 
            $this->deleteRouteName : $this->routeBindModel.'.destroy';
return '

    <a href="'.route($routeEdit, [$this->routeBindModel => $model->id]).'"
        class="btn btn-warning btn-xs edit">
        <span class="fa fa-pencil"></span> Edit
    </a>
    <a id="delBtn" data-url="'.route($routeDelete, [$this->routeBindModel => $model->id]).'"
        data-toggle="modal" data-target=" #modalDelete" data-title="Confirmation" data-table-name="#datatable" data-message="Do you want to delete this record?" 
        class="btn btn-danger btn-xs delete" >
        <span class="fa fa-trash-o"></span> Delete
    </a>';
}

protected function setAction($string) {

$this->action = $string;
return $this;
}

}

任何想法？

Answer 1

你可能有这样的路线：

Route::post('car_category/{id}', 'CarCategoriesController@save');

您正在接收路线中的ID。默认情况下，它们作为字符串传递给控制器方法。在您的代码中，您将id（字符串）传递给saveHandler()方法。这就是$obj->fill()第41行CRUDRenderHelper抛出异常的原因。

更改save方法以检查$id是否为空，如果是，则创建一个新的CarCategory，如果没有，则尝试使用给定的{{1}从数据库中获取它}：

$id

在字符串上调用成员函数fill（）

1 个答案: