我上传了15mb的图片，它抛出了PostTooLarge Exception的异常，而不是异常，我必须显示Flash错误消息，但无法获取它。
下面是我用于Handler.php的处理程序，它工作得很好，但不显示Flash消息。
if ($exception instanceof \Illuminate\Http\Exceptions\PostTooLargeException)
{
return redirect()->route('users.add')->withFlashError('Image Size too large!');
}
然后我在如下所示的控制器中尝试了laravel的validate来实现图像
$validator = Validator::make($request->all(), [
'image' => 'max:4000',
]);
if ($validator->fails())
{
return redirect()->route('user')->withFlashError('Image size exceeds 4MB');
}
但仍然没有运气
下面是具有以下格式的刀片文件：
<form method="post" action="{{route('users.submit')}}" id="adduser" enctype="multipart/form-data">
{{csrf_field()}}
<div class="form-group">
<div class="form-row">
<div class="form-group col-md-6">
<label class="col-form-label">User name*</label>
<input type="text" class="form-control" name="name" placeholder="User name" value="{{ old('name') }}">
</div>
<div class="form-group col-md-6">
<label class="col-form-label">User email*</label>
<input type="text" class="form-control" name="email" value="{{ old('email') }}" placeholder="User email" autocomplete="off">
</div>
</div>
</div>
<div class="form-group">
<div class="form-row">
<div class="form-group col-md-6">
<label class="col-form-label">Password*</label>
<input id="password" type="password" class="form-control" name="password" placeholder="Password">
</div>
<div class="form-group col-md-6">
<label class="col-form-label">Confirm password</label>
<input type="password" class="form-control" name="confirmpassword" placeholder="Confirm password">
</div>
</div>
</div>
<div class="form-group">
<div class="form-row">
<div class="form-group col-md-6">
<label class="col-form-label">Phone number*</label>
<input type="text" class="form-control" name="mobile" value="{{ old('mobile') }}" placeholder="Phone Number">
</div>
<div class="col-md-6">
<label class="col-form-label">User role*</label>
<select name="role" class="form-control valid">
<option value="">Select Role</option>
<option {{ old('role')==3?'selected':'' }} value="3">Author</option>
<option {{ old('role')==5?'selected':'' }} value="5">Product Admin</option>
</select>
</div>
</div>
</div>
<div class="form-group">
<div class="form-row">
<div class="col-md-6">
<label class="col-form-label">User image</label>
<div class="card-body">
<div class="was-validated">
<label class="custom-file">
<input type="file" name="image" accept=".jpg, .png,.jpeg" id="file" class="custom-file-input">
<span class="custom-file-control"></span>
</label>
<ul class="preview" style="margin-top: 10px;">
</ul>
</div>
</div>
</div>
</div>
</div>
<button style="float: right;" type="submit" class="btn btn-primary" id="validateForm">Save</button>
</form>
和下面是控制器代码：
<?php
namespace App\Http\Controllers\admin;
use Illuminate\Http\Request;
use App\Http\Controllers\Controller;
use App\User;
use Validator;
class UserController extends Controller
{
/**
* Display a listing of the resource.
*
* @return \Illuminate\Http\Response
*/
public function index()
{
$users = User::whereNotIn('role', array(1,4))->orderBy('id','DESC')->get();
return view('admin.users.index',compact('users'));
}
/**
* Show the form for creating a new resource.
*
* @return \Illuminate\Http\Response
*/
public function create()
{
return view('admin.users.add');
}
/**
* Store a newly created resource in storage.
*
* @param \Illuminate\Http\Request $request
* @return \Illuminate\Http\Response
*/
public function store(Request $request)
{
$data=$request->all();
$validate = Validator::make($data, [
'email' => 'required|string|email|max:255|unique:users',
]);
if ($validate->fails()) {
return redirect('users/add')->withFlashError('Email already exists')->withInput();
}
if(isset($_FILES['image']))
{
$validator = Validator::make($request->all(), [
'image' => 'max:4000',
]);
if ($validator->fails())
{
//return redirect()->route('user')->withFlashError('Image size exceeds 4MB');
//return redirect()->route('user')->withErrors(['error' => 'Image size exceeds 4MB']);
//return redirect('users/add')->withFlashError('Image size exceeds 4MB')->withInput();
return redirect()->back()->withErrors(['error' => 'Image size exceeds 4MB']);
}
if(basename($_FILES['image']['name']) != "")
{
$target_path = base_path().'/public/user/';
$time=round(microtime(true));
$newfilename = $target_path .$time . '.jpg';
$target_path = $target_path .time().basename($_FILES['image']['name']);
if (move_uploaded_file($_FILES['image']['tmp_name'], $newfilename))
{
$user_data['image'] =$time.'.jpg';
}
}
else
{
$user_data['image'] = "";
}
}
$insert_data = array
(
"name" => $data['name'],
"email" => $data['email'],
"password" => bcrypt($data['password']),
"mobile" => $data['mobile'],
"image" => $user_data['image'],
"role" => $data['role'],
"status" => 1
);
User::create($insert_data);
return redirect()->route('users')->withFlashSuccess('User added successfully');
}
/**
* Display the specified resource.
*
* @param int $id
* @return \Illuminate\Http\Response
*/
public function show($id)
{
//
}
/**
* Show the form for editing the specified resource.
*
* @param int $id
* @return \Illuminate\Http\Response
*/
public function edit($id)
{
//
}
/**
* Update the specified resource in storage.
*
* @param \Illuminate\Http\Request $request
* @param int $id
* @return \Illuminate\Http\Response
*/
public function update(Request $request, $id)
{
//
}
/**
* Remove the specified resource from storage.
*
* @param int $id
* @return \Illuminate\Http\Response
*/
public function destroy($id)
{
$user = User::find($id);
$user->delete();
return redirect()->route('users')->withFlashSuccess('User deleted successfully');
}
public function delete($id)
{
$news = User::find($id);
$news->delete();
}
public function status($id)
{
$store=User::find($id);
if($store->status==1)
{
$status=0;
}
else
{
$status=1;
}
User::whereId($id)->update(array('status'=>$status));
return redirect()->route('users')->withFlashSuccess('User status changed');
}
public function saverole(Request $request)
{
$data=$request->all();
$string_role = implode(', ', $data['role']);
User::whereId($data['user_id'])->update(array('role'=>$string_role));
return redirect()->route('users')->withFlashSuccess('User role changed');
}
}
答案 0 :(得分：0)
将您的验证代码行更改为此：
$this->validate(request(), [
'image' => 'max:4000'
],
[
'image.max' => 'Image size exceeds 4MB'
]);
在您的视图文件中，运行以下代码以显示错误：
@if($errors->any())
<h4>{{$errors->first()}}</h4>
@endif
答案 1 :(得分：-2)
由于 php.ini 在引发异常时排在第一位，因此不会将期望转移到定义的错误中。