Laravel:在自定义类中重定向? [英] Laravel: Redirect within custom class?

问题描述

我不确定这是正确"的处理方式，但是逻辑在起作用.我在Laravel设置中有自己的类，我在控制器中use.在我的控制器中，我在自定义类中调用了一个函数，但是，如果该函数中发生某些事情，我想重定向用户.

I'm not sure this is the "proper" way of doing things, but the logic is working. I have my own class in my Laravel setup, which I use in a controller. Within my controller I call a function in my custom class, however I'd like to Redirect the user if something happens within that function.

在IRC上聊天后，我被告知您不能在自己的类中执行重定向，您必须从控制器中返回重定向响应对象 ".

After chatting on IRC, I'm told you can't do a Redirect within your own class, you have to "return the redirect response object from the controller".

不能完全确定这是什么意思，但是我想您必须从控制器执行重定向.

Not entirely sure what this means, but I guess you have to do the redirects from the controller instead.

代码(简体，正在运行):

Code (simplified, it is working):

Controller method:

    // Validate the incoming user
    $v = new SteamValidation( $steam64Id );

    // Check whether they're the first user
    $v->checkFirstTimeUser();

这将转到我的SteamValidation类(app/Acme/Steam/SteamValidation.php和命名空间)，并进行检查:

This goes away to my SteamValidation class (app/Acme/Steam/SteamValidation.php and namespaced), and it does a check:

public function checkFirstTimeUser() {

    // Is there any users?
    if( \User::count() == 0 ) {

        $user_data = [
           // Data
        ];

        // Create the new user
        $newUser = \User::create( $user_data );

        // Log that user in
        \Auth::login($newUser);

        // Redirect to specific page
        return \Redirect::route('settings');
    }

    return;
}

现在，如果计数超过0，则它将仅返回到控制器，而我很乐意继续.但是，如果它是新用户，而我尝试进行重定向(return \Redirect::route('settings');)，则会得到一个空白页面！

Now if the count is over 0, then it just returns back to the controller and I happily carry on. However, if it's a new user and I try to do a redirect (return \Redirect::route('settings');) I get a blank page!

所以我的问题是:

• 为什么我不能从这里重定向?
• 将响应返回给控制器然后进行重定向的正确方法是什么?

推荐答案

无法从嵌套方法进行重定向的原因是，仅调用Redirect :: route()不会触发重定向.控制器的方法将返回Laravel然后确定要执行的操作-如果是View，它将显示它，如果是Redirect，它将执行重定向.在您的嵌套方法中，您可以返回所需的内容，但是只要在控制器上没有将其传递下去，那对您就没有好处.

The reason you can't redirect from your nested method is that simply calling Redirect::route() does not fire a redirect off. Your controller's method will return something Laravel then looks at to decide what to do - if it'a a View it'll display it, if it's a Redirect it'll do a redirect. In your nested method, you can return what you want but as long at the controller it's not passing that down the line then it's no good for you.

此外，您可能也不应该在辅助函数中返回重定向.如果您的validate函数有一个布尔响应(是的，没什么不好)，那么您可以简单地返回true/false，然后在控制器中进行选择以进行重定向:

Also you probably shouldn't return a Redirect in a helper function anyway. If your validate function has a boolean response (yes all good, no something's bad) then you can simply return true/false and then pick that up in the controller to do the redirect:

// Validate the incoming user
$v = new SteamValidation( $steam64Id );

// Check whether they're the first user
if ($v->isFirstTimeUser()) { // note I renamed this method, see below
    return \Redirect::route('settings');
}

但是，在我们承担重定向重定向验证方法的责任时，您还应该承担创建用户的责任:

However, while we're taking the responsibility of redirecting away from your validation method, you should also take the responsibility of creating the user away:

// SteamValidation
public function isFirstTimeUser() {
    return (\User::count() == 0);
}

// Controller

// Validate the incoming user
$v = new SteamValidation( $steam64Id );

// Check whether they're the first user
if ($v->isFirstTimeUser()) {
    // you may even wish to extract this user creation code out to something like a repository if you wanna go for it

    $user_data = [
       // Data
    ];

    // Create the new user
    $newUser = \User::create( $user_data );

    // Log that user in
    \Auth::login($newUser);

    // Redirect to specific page
    return \Redirect::route('settings');
}

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