laravel 如何检查路由“URL”是否存在？
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How can I check whether the route "URL" exists?
提问by u775856
In Laravel 5.2, is there a particular way (handler) to check whether a route is existing or not? Let's say, for a basic URL like:
在Laravel 5.2 中，是否有特定的方法（处理程序）来检查路由是否存在？比方说，对于一个基本的 URL，如：
http://www.example.com/laravel
I then want to handle the non-existing URLs (like: /laravel) from my Main Page Router, which is:
然后我想处理/laravel来自我的 Main Page Router的不存在的 URL（如：），它是：
Route::get('/{page}', funtion(){
//check if $page is a valid route URL? Or 404?
});
How do I purposely check whether this route is a valid one or not?
我如何有目的地检查这条路线是否有效？
回答by Pitchinnate
Simply put your Route::get('/{page}','MainController@getPage');last. That way if it finds another route before it will use it but if it doesn't then it will get caught by this. For example:
简单地把你的Route::get('/{page}','MainController@getPage');最后。这样，如果它在使用它之前找到另一条路线，但如果没有，那么它就会被它抓住。例如：
Route::get('/welcome','WelcomeController@getWelcome');
Route::get('/test','TestController@getTest');
Route::get('/{page}','MainController@getPage');
If you were to hit /welcomeor /testit should route them to the correct controller. If you where to hit /helloit should go to the MainControllerand hit function getPage($page)with $pagebeing the page you hit.
如果您要击中/welcome或/test应该将它们路由到正确的控制器。如果你在哪里打/hello它应该去MainController和命中功能getPage($page)与$page被你打的页面。
If it hits MainController@getPageyou know it was basically a 404.
如果它命中，MainController@getPage你就会知道它基本上是一个 404。
If you need to know before you hit the route for some reason you could create something like this:
如果您出于某种原因需要在到达路线之前知道，您可以创建如下内容：
Route::get('/checkurl/{page}',function($page) {
$exists = Route::has('/' . $page);
return (new Response(json_encode(['exists'=>$exists]),200);
});
回答by user2094178
I use the following as my last route:
我使用以下作为我的最后一条路线：
Route::any('{catchall}', function($page) {
abort(404);
} )->where('catchall', '(.*)');
If you are not aware yet, abort(404)will return the view 404.blade.phpfrom resources/views/errors.
如果你不知道的是，abort(404)将返回视图404.blade.php的resources/views/errors。
回答by TGA
Adding last route with any catch doesn't works anymore with laravel 5.5.1+
使用 laravel 5.5.1+ 添加带有任何捕获的最后一条路线不再适用
