問題描述

我創建了一個只在我的電話號碼上存儲數字的 mutator.這是我的配置文件模型中的代碼.

Hi I have created a mutator to only store digits on my phone numbers. Here is my code in my Profile Model.

public function setPhoneAttribute($phone)
{
    $this->attributes['phone'] = preg_replace("/[^0-9]/","",$phone);
}

這在我創建新記錄時有效，但如果我更新記錄則不起作用.我的問題是如何在創建和更新時執行 Mutator?

This works when I create a new record, but if I update the record it does not work. My question is how do I execute the Mutator on both create and update?

以下是我在控制器中更新和創建的方法:

Here is how I update and create in my controller:

namespace AppHttpControllers;
use AppHttpRequests;
use AppHttpRequestsProfileRequest;
use AppHttpControllersController;
use IlluminateHttpRequest;
use Auth;
use AppProfile;

class ProfileController extends Controller {

    public function create(ProfileRequest $request)
    {
        // Check if the user does not have a profile yet
        if(!Auth::user()->profile()->first()){

            // Save to database
            $saveToDatabase = Auth::user()->profile()->create($request->all()); 

            return $saveToDatabase;
        }
    }

    public function update(Profile $profile, ProfileRequest $request)
    {

        // Save to database
        $saveToDatabase = Auth::user()->profile()->update($request->all());

        return $saveToDatabase;
    }
}

推薦答案

情況如下:

Auth::user()->profile()->create($request->all()) 調用關系的 create 方法(HasOneOrMany).此方法然后創建一個相關模型的新實例.這很重要，因為顯然屬性修改器僅在通過模型創建記錄時使用.

Auth::user()->profile()->create($request->all()) calls the create method on your relationship (HasOneOrMany). This method then creates a new instance of the related model. This is important because obviously attribute mutators are only used when the record is created through the model.

然而，關系對象沒有任何 update 方法.(擁有一個也沒有意義......).因此，當您執行 Auth::user()->profile()->update($request->all()) 時，會發生什么.update 調用被代理到查詢構建器實例(匹配關系).這會導致執行以下內容:

However the relationship object doesn't have any update method. (It also wouldn't make sense to have one...). So what's happening instead is, when you do Auth::user()->profile()->update($request->all()). The update call get's proxied off to a query builder instance (that matches the relationship). This results in something like this being executed:

UPDATE profiles SET foo = 'bar' WHERE [relationship conditions]

它根本不使用模型.因此，mutator 不起作用.

It doesn't use the model at all. Therefore the mutator doesn't work.

相反，您必須在實際相關模型上調用 update 方法.您可以通過將關系作為屬性調用來訪問它:

Instead you have to call the update method on the actual related model. You can access it by just calling the relation as a property like this:

$saveToDatabase = Auth::user()->profile->update($request->all());
//                                    ^^
//                               no parentheses

<小時>

如果 Profile 模型被正確注入，你實際上也可以使用它:

If the Profile model is injected correctly you actually might also just use that though:

public function update(Profile $profile, ProfileRequest $request)
{
    // Save to database
    $saveToDatabase = $profile->update($request->all());
    return $saveToDatabase;
}

這篇關于Laravel 5 mutator 僅在我創建記錄時有效，而在我更新記錄時無效的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！