common sense
2018-11-16 01:00:12
在点击控制器动作之前调用中间件。所以不可能根据动作内部的条件来执行中间件。但是，可以有条件地执行中间件：
通过请求
你可以将条件添加到请求对象（隐藏字段或类似的）
public function handle($request, Closure $next)
{
// Check if the condition is present and set to true
if ($request->has('condition') && $request->condition == true)) {
//
}
// if not, call the next middleware
return $next($request);
}
通过参数
要将参数传递给中间件，你必须在路由定义中设置它。定义路由并将:条件值（在本例中为布尔值）附加到中间件的名称。
路线/ web.php
Route::post('route', function () {
//
})->middleware('FooMiddleware:true');
中间件
public function handle($request, Closure $next, $condition)
{
// Check if the condition is present and set to true
if ($condition == true)) {
//
}
// if not, call the next middleware
return $next($request);
}
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