php 如何使用输入重定向回表单 - Laravel 5
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How to redirect back to form with input - Laravel 5
提问by infomaniac
How do I redirect back to my form page, with the given POSTparams, if my form action throws an exception?
POST如果我的表单操作引发异常，如何使用给定的参数重定向回我的表单页面？
回答by infomaniac
You can use the following:
您可以使用以下内容：
return Redirect::back()->withInput(Input::all());
If you're using Form Request Validation, this is exactly how Laravel will redirect you back with errors and the given input.
如果您正在使用Form Request Validation，这正是 Laravel 将您重定向回错误和给定输入的方式。
Excerpt from \Illuminate\Foundation\Validation\ValidatesRequests:
摘自\Illuminate\Foundation\Validation\ValidatesRequests：
return redirect()->to($this->getRedirectUrl()) ->withInput($request->input()) ->withErrors($errors, $this->errorBag());
return redirect()->to($this->getRedirectUrl()) ->withInput($request->input()) ->withErrors($errors, $this->errorBag());
回答by Vishal Rambhiya
write old function on your fields value for example
例如，在您的字段值上编写旧函数
<input type="text" name="username" value="{{ old('username') }}">
回答by Maniruzzaman Akash
In your HTML you have to use value = {{ old('') }}. Without using it, you can't get the value back because what session will store in their cache.
在您的 HTML 中，您必须使用value = {{ old('') }}. 如果不使用它，您将无法取回该值，因为会话将存储在其缓存中。
Like for a name validation, this will be-
就像名称验证一样，这将是-
<input type="text" name="name" value="{{ old('name') }}" />
Now, you can get the value after submitting it if there is error with redirect.
现在，如果重定向出错，您可以在提交后获取该值。
return redirect()->back()->withInput();
As @infomaniacsays, you can also use the Input classdirectly,
正如@infomaniac所说，您也可以Input class直接使用，
return Redirect::back()->withInput(Input::all());
Add:If you only show the specific field, then use $request->only()
添加：如果只显示特定字段，则使用$request->only()
return redirect()->back()->withInput($request->only('name'));
Hope, it might work in all case, thanks.
希望，它可能适用于所有情况，谢谢。
回答by Aditya Tomar
this will work definately!!!
这肯定会奏效！！！
$v = Validator::make($request->all(),[
'name' => ['Required','alpha']
]);
if($v->passes()){
print_r($request->name);
}
else{
//this will return the errors & to check put "dd($errors);" in your blade(view)
return back()->withErrors($v)->withInput();
}
回答by Rav
I handle validation exceptions in Laravel 5.3 like this. If you use Laravel Collective it will automatically display errors next to inputs and if you use laracasts/flash it will also show first validation error as a notice.
我在 Laravel 5.3 中像这样处理验证异常。如果您使用 Laravel Collective，它会自动在输入旁边显示错误，如果您使用 laracasts/flash，它还会显示第一个验证错误作为通知。
Handler.phprender:
Handler.php使成为：
public function render($request, Exception $e)
{
if ($e instanceof \Illuminate\Validation\ValidationException) {
return $this->handleValidationException($request, $e);
}
(..)
}
And the function:
和功能：
protected function handleValidationException($request, $e)
{
$errors = @$e->validator->errors()->toArray();
$message = null;
if (count($errors)) {
$firstKey = array_keys($errors)[0];
$message = @$e->validator->errors()->get($firstKey)[0];
if (strlen($message) == 0) {
$message = "An error has occurred when trying to register";
}
}
if ($message == null) {
$message = "An unknown error has occured";
}
\Flash::error($message);
return \Illuminate\Support\Facades\Redirect::back()->withErrors($e->validator)->withInput();
}
回答by Luca C.
Laravel 5:
拉维尔5：
return redirect(...)->withInput();
for back only:
只回：
return back()->withInput();
回答by RashedRahat
You can use any of these two:
您可以使用这两个中的任何一个：
return redirect()->back()->withInput(Input::all())->with('message', 'Some message');
return redirect()->back()->withInput(Input::all())->with('message', 'Some message');
Or,
或者，
return redirect('url_goes_here')->withInput(Input::all())->with('message', 'Some message');
return redirect('url_goes_here')->withInput(Input::all())->with('message', 'Some message');
回答by Tu?n Anh Tr?n V?n
$request->flash('request',$request);
<input type="text" class="form-control" name="name" value="{{ old('name') }}">
It works for me.
这个对我有用。
回答by RashedRahat
You can try this:
你可以试试这个：
return redirect()->back()->withInput(Input::all())->with('message', 'Something
went wrong!');
