即使存在参数，Request :: has()也会返回false [英] Request::has() returns false even when parameter is present

问题描述

URL:http://localhost/?v=

代码:

Route::get('/', ['as' => 'home', function()
{
    dd(Request::has('v'));
}]);

输出:false

这是怎么回事?这是错误还是我做错了什么?

What is going on? Is this a bug or am I doing something wrong?

推荐答案

Request::has()将检查该项目是否已实际设置.空字符串在这里不计算在内.

Request::has() will check if the item is actually set. An empty string doesn't count here.

您正在寻找的是:Request::exists()！

Route::get('/', ['as' => 'home', function()
{
    dd(Request::exists('v'));
}]);

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