Laravel Restful Api：在 null 上调用成员函数 toBase()

发布于 2025-01-21 01:45:54 字数 1272 浏览 5 评论 0原文

我正在使用Laravel 5.8，我想从API路线中检索一些数据：

Route::prefix('v1')->namespace('Api\v1')->group(function(){
    Route::get('/articles','ArticleController@index');;
});

然后我也制作了一个资源收集和一个控制器：

articleCollection.php：

public function toArray($request)
    {
        return parent::toArray($request);
    }

ARTICLECONTROLLER：

public function index()
    {
        $articles = Article::all();
        return new ArticleCollection($articles);
    }

现在它正确显示了数据：

{"data":[{"art_id":3,"art_cat_id":15,"art_author_id":23973,"art_title":"\u0627\u062d\u06cc\u0627\u06cc...

但是当我将资源收集更改为此时：

public function toArray($request)
    {
        return [
            'title' => $this->art_title,
            'desc' => $this->art_description,
        ];
    }

尝试在控制器中找到特定的文章：

public function index()
    {
        $articles = Article::find(1);
        return new ArticleCollection($articles);
    }

我会以某种方式获得此错误：

致命性 呼叫null上的成员函数tobase（）

那么这里出了什么问题？我该如何解决这个问题？

原文

I'm using Laravel 5.8 and I wanted to retrieve some data from an Api route:

Route::prefix('v1')->namespace('Api\v1')->group(function(){
    Route::get('/articles','ArticleController@index');;
});

Then I made a Resource Collection and a Controller as well:

ArticleCollection.php:

public function toArray($request)
    {
        return parent::toArray($request);
    }

ArticleController:

public function index()
    {
        $articles = Article::all();
        return new ArticleCollection($articles);
    }

Now it properly shows data:

{"data":[{"art_id":3,"art_cat_id":15,"art_author_id":23973,"art_title":"\u0627\u062d\u06cc\u0627\u06cc...

But when I change the Resource Collection to this:

public function toArray($request)
    {
        return [
            'title' => $this->art_title,
            'desc' => $this->art_description,
        ];
    }

And trying to find an specific article in the Controller:

public function index()
    {
        $articles = Article::find(1);
        return new ArticleCollection($articles);
    }

I will get this error somehow:

FatalThrowableError
Call to a member function toBase() on null

So what's going wrong here? How can I solve this issue?

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随遇而安 2025-01-28 01:45:54

将其更改

public function index()
    {
        $articles = Article::find(1);
        return new ArticleCollection($articles);
    }

为：

public function index()
    {
        $articles = Article::where('id',1)->get();
        return new ArticleCollection($articles);
    }

这是因为查找仅返回一条记录，并且您要将其转换为集合，通过使用 get() 您可以按照您的意图返回一个集合。

Change this:

public function index()
    {
        $articles = Article::find(1);
        return new ArticleCollection($articles);
    }

to this:

public function index()
    {
        $articles = Article::where('id',1)->get();
        return new ArticleCollection($articles);
    }

This is because the find returns just one record and you are converting that to a collection, by using get() you can return a collection as you intend to here.

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