laravel 如果参数不是整数，我如何以不同的方式定义路由
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How can I define a route differently if parameter is not integer
提问by Matthieu Boisjoli
I am using Laravel 5 and working on my local. I made a route with a parameter of {id} and another route with a specific name like so :
我正在使用 Laravel 5 并在我的本地工作。我创建了一个参数为 {id} 的路由和另一个具有特定名称的路由，如下所示：
Route::get('contacts/{id}', 'ContactController@get_contact');
Route::get('contacts/new', 'ContactController@new_contact');
My problem here is that if I try to go at localhost/contacts/new it will automatically access to the get_contact method. I understand that I have made a {id} parameter but what if I want to call get_contact only if my parameter is an integer? If it is not, check if it's "new" and access to new_contact method. Then, if it's not an integer and not "new", error page 404.
我的问题是，如果我尝试访问 localhost/contacts/new，它将自动访问 get_contact 方法。我知道我已经创建了一个 {id} 参数，但是如果我只想在我的参数是整数时调用 get_contact 怎么办？如果不是，请检查它是否是“新的”并访问 new_contact 方法。然后，如果它不是整数且不是“新的”，则会出现错误页面 404。
How can I do that in Laravel 5?
我怎样才能在 Laravel 5 中做到这一点？
Thanks for your help!
谢谢你的帮助！
回答by Limon Monte
Just add ->where('id', '[0-9]+')to route where you want to accept number-only parameter:
只需添加->where('id', '[0-9]+')到要接受仅数字参数的路由：
Route::get('contacts/{id}', 'ContactController@get_contact')->where('id', '[0-9]+');
Route::get('contacts/new', 'ContactController@new_contact');
Read more: http://laravel.com/docs/master/routing#route-parameters
阅读更多：http: //laravel.com/docs/master/routing#route-parameters
回答by Hafiz
A simple solution would be to use an explicit approach.
一个简单的解决方案是使用显式方法。
Route::get('contacts/{id:[0-9]+}', 'ContactController@get_contact');
Route::get('contacts/new', 'ContactController@new_contact');
回答by Johannes Maria Frank
Although the accepted answer is perfectly fine, usually a parameter is used more than once and thus you might want to use a DRY approach by defining a pattern in your bootfunction in the RouteServiceProvider.phpfile located under app/Providers(Laravel 5.3 and onwards):
尽管接受的答案非常好，但通常一个参数会被多次使用，因此您可能希望通过boot在RouteServiceProvider.php位于app/Providers（Laravel 5.3 及更高版本）下的文件中的函数中定义模式来使用 DRY 方法：
/**
* Define your route model bindings, pattern filters, etc.
*
* @return void
*/
public function boot()
{
Route::pattern('id', '[0-9]+');
parent::boot();
}
This way, whereever you use your {id}parameter the constraints apply.
这样，无论您{id}在哪里使用参数，约束都适用。
回答by Inuyaki
There is also the possibility to just switch those around, because route file will go through all lines from top to bottom until it finds a valid route.
也有可能只是切换它们，因为路由文件将从上到下遍历所有行，直到找到有效的路由。
Route::get('contacts/new', 'ContactController@new_contact');
Route::get('contacts/{id}', 'ContactController@get_contact');
If you want to restrict that route to pure numbers, the marked solution is correct though.
如果您想将该路线限制为纯数字，则标记的解决方案是正确的。
Just adding it here, I know it is quite old ;)
只是在这里添加它，我知道它已经很旧了;)
