Route [method] not defined - laravel-5.1

Question

I am creating a form to insert data into database.version laravel5.1 but my code is not working.
resources\views\login.blade.php
<!-- Registration Form -->
<form action="{{ URL::route('postform_registration') }}" role="form" id="login_popup_form" method="post" name="login_popup_form">
<input type="hidden" name="_token" value="{{ csrf_token() }}">
<img id="close" src="{{ URL::asset('tradextek/img/close_irtiza.png') }}" alt="" onclick ="div_hide()">
<h2>Registration</h2>
<hr>
<div class="form-group">
<label for="">Your Email</label>
<input type="text" class="form-control" id="login_popup_email" name="login_popup_email" placeholder="Email" type="text">
</div>
<hr>
<div class="form-group">
<label for="">Your Password</label>
<input type="password" class="form-control"id="login_popup_password" name="login_popup_password" placeholder="Password...">
</div>
<hr>
<button type="submit" onclick="check_empty()" class="btn btn-primary">Submit</button>
</form>
<h3>
<?php
if(Session::has('key')){
echo Session::get('key');
}
?>
</h3>
routes.php
Route::post('/login',array(
'as' => 'postform',
'uses' => 'all_control#postform'
));
Route::post('/login',array(
'url' => 'postform_registration',
'uses' => 'all_control#postform_registration'
));
app/controllers/all_control
public function postform_registration(Request $request)
{
$email = $request->login_popup_email;
$password = $request->login_popup_password;
return redirect('login')->with('key', 'You have inserted successfully');
}
Error message
1)ErrorException in UrlGenerator.php line 296:
Route [postform] not defined. (View: C:\xampp\htdocs\project\resources\views\login.blade.php)
2)InvalidArgumentException in UrlGenerator.php line 296:
Route [postform] not defined.

Answer 1

By seeing this code, i guess that,there are two possibilities for your error.
in routes.php you have defined:
Route::post('/login',array(
'as' => 'postform',
'uses' => 'all_control#postform'
));
Route::post('/login',array(
'url' => 'postform_registration',
'uses' => 'all_control#postform_registration'
));
I can't understand why you have different routes entry for same url and same HTTP method in your case POST.
and you have defined POST method for routes
Route::post('/login',array(
'as' => 'postform',
'uses' => 'all_control#postform'
));
and other side you are passing GET Reqest from controller.
and second points:
Have you defined postform in all_control.php?