参数1传递给App\Http\Controller\Controller：：validate()

Question

我为什么要犯这个错误？

参数1传递给App\Http\Controller\：called ()必须是照明\Http\请求的实例，在第55行的C:\xampp\htdocs\spupresearchjournal\app\Http\Controllers\CurrentIssueController.php中调用的照明\支持\Facades\请求的实例

公共函数存储(请求$request) {

    $this->validate($request, [

        'journalcover' => 'required|image|mimes:jpeg,png,jpg,gif,svg|max:2048',
        'title' => 'required',
        'editor' => 'required',
        'date' => 'required',
        'summary' => 'required',
    ]);

    // check if file was uploaded
    if ($request->hasFile('journalcover')) {
        // get the file object
        $image = $request->file('journalcover');
        $name = $image->getClientOriginalName();
        //$name['journalcover'] = 'images/' . $request->file('journalcover')->getClientOriginalName();
        //$size = $image->getClientSize();
        $destinationPath = ('images/');
        $image->move($destinationPath, $name);
        $journalcover = $destinationPath . $name;

        $newjournal = new CurrentIssue;
        $newjournal->journalcover = ('images/').$name;
        $newjournal->title = $request->input('title');
        $newjournal->editor = $request->input('editor');
        $newjournal->date = $request->input('date');
        $newjournal->summary = $request->input('summary');
        $newjournal->status = $request->input('status', '0');
        //$newjournal->size = $size;
        //dd($newjournal);
        $newjournal->save();

        return redirect('/currentissue')->with('success', 'New Journal Added');
    }
}

参数1传递给App\Http\Controller\：called ()必须是照明\Http\请求的实例，在第55行的C:\xampp\htdocs\spupresearchjournal\app\Http\Controllers\CurrentIssueController.php中调用的照明\支持\Facades\请求的实例

Answer 1

您没有从控制器中的正确命名空间导入类。您希望在文件顶部导入Illuminate\Http\Request类，而不是请求facade类：

use Illuminate\Http\Request;

阅读有关使用命名空间的http://php.net/manual/en/language.namespaces.importing.php。