我试图通过我的路径将一个变量传递给我的控制器,但我有多条路径(类别)通向同一个控制器,即
Route::get('/category1/{region}/{suburb?}', 'SearchController@search');
Route::get('/category2/{region}/{suburb?}', 'SearchController@search');
将/ category1,2等作为参数/ {category}不是一个选项,我不想为每个类别制作单独的控制器功能。
如何将网址的第一段发送到我的搜索控制器?即category1或category2?
目前控制器如下:
public function search($region, $suburb = null) { }
谢谢!
答案 0 :(得分:4)
您可以为{category}参数指定一个遮罩,使其必须符合格式"类别[0-9] +"为了匹配路线。
Route::get('/{category}/{region}/{suburb?}', 'SearchController@search')
->where('category', 'category[0-9]+');
现在,您的示例网址(来自评论)www.a.com/var1/var2/var3
只会在var1
与给定类别正则表达式匹配时匹配路线。
更多信息可以在路线参数here的文档中找到。
是的,这可以使用一组字符串值。它是一个正则表达式,所以你只需要将你的字符串值数组放入该上下文中:
Route::get('/{category}/{region}/{suburb?}', 'SearchController@search')
->where('category', 'hairdresser|cooper|fletcher');
或者,如果您在其他地方构建了数组:
$arr = ['hairdresser', 'cooper', 'fletcher'];
// run each array entry through preg_quote and then glue
// the resulting array together with pipes
Route::get('/{category}/{region}/{suburb?}', 'SearchController@search')
->where('category', implode('|', array_map('preg_quote', $arr)));
您的原始问题是如何将硬编码的类别段传递到控制器中。如果由于某种原因,您不希望使用上述解决方案,则还有其他两种选择。
选项1:不传递该值,只需访问控制器中的请求段即可。
public function search($region, $suburb = null) {
$category = \Request::segment(1);
dd($category);
}
选项2:使用前置过滤器(L4)或中间件(L5)之前修改路由参数。
在过滤器(和中间件)有权访问路由对象之前,可以使用路由对象上的方法来修改路由参数。这些路由参数最终传递到控制器操作中。路径参数存储为关联数组,因此在尝试使订单正确时需要牢记这一点。
如果使用Laravel 4,则需要使用之前的过滤器。定义要使用前置过滤器的路由,并传入要添加到参数上的硬编码值。
Route::get('/hairdresser/{region}/{suburb?}', ['before' => 'shiftParameter:hairdresser', 'uses' => 'SearchController@search']);
Route::get('/cooper/{region}/{suburb?}', ['before' => 'shiftParameter:cooper', 'uses' => 'SearchController@search']);
Route::get('/fletcher/{region}/{suburb?}', ['before' => 'shiftParameter:fletcher', 'uses' => 'SearchController@search']);
Route::filter('shiftParameter', function ($route, $request, $value) {
// save off the current route parameters
$parameters = $route->parameters();
// unset the current route parameters
foreach($parameters as $name => $parameter) {
$route->forgetParameter($name);
}
// union the new parameters and the old parameters
$parameters = ['customParameter0' => $value] + $parameters;
// loop through the new set of parameters to add them to the route
foreach($parameters as $name => $parameter) {
$route->setParameter($name, $parameter);
}
});
如果使用Laravel 5,您需要在中间件之前定义一个新的。将新类添加到app / Http / Middleware目录并将其注册到app / Http / Kernel.php中的$routeMiddleware
变量中。逻辑基本相同,需要额外的箍才能将参数传递给中间件。
// the 'parameters' key is a custom key we're using to pass the data to the middleware
Route::get('/hairdresser/{region}/{suburb?}', ['middleware' => 'shiftParameter', 'parameters' => ['hairdresser'], 'uses' => 'SearchController@search']);
Route::get('/cooper/{region}/{suburb?}', ['middleware' => 'shiftParameter', 'parameters' => ['cooper'], 'uses' => 'SearchController@search']);
Route::get('/fletcher/{region}/{suburb?}', ['middleware' => 'shiftParameter', 'parameters' => ['fletcher'], 'uses' => 'SearchController@search']);
// middleware class to go in app/Http/Middleware
// generate with "php artisan make:middleware" statement and copy logic below
class ShiftParameterMiddleware {
public function handle($request, Closure $next) {
// get the route from the request
$route = $request->route();
// save off the current route parameters
$parameters = $route->parameters();
// unset the current route parameters
foreach ($parameters as $name => $parameter) {
$route->forgetParameter($name);
}
// build the new parameters to shift onto the array
// from the data passed to the middleware
$newParameters = [];
foreach ($this->getParameters($request) as $key => $value) {
$newParameters['customParameter' . $key] = $value;
}
// union the new parameters and the old parameters
$parameters = $newParameters + $parameters;
// loop through the new set of parameters to add them to the route
foreach ($parameters as $name => $parameter) {
$route->setParameter($name, $parameter);
}
return $next($request);
}
/**
* Method to get the data from the custom 'parameters' key added
* on the route definition.
*/
protected function getParameters($request) {
$actions = $request->route()->getAction();
return $actions['parameters'];
}
}
现在,通过设置和使用过滤器(或中间件),类别将作为第一个参数传递给控制器方法。
public function search($category, $region, $suburb = null) {
dd($category);
}