PHP警告：include（C：\ xampp \ htdocs \ hse \ vendor \ composer /../../ app / Buildings.php）：无法打开流

I've previously manually deleted some models files in App* and created other with just removing the "s" symbol as because laravel by default can recognise the models from there name , and models by Laravel standadrd must be written normal not in plural.

Before deleting the models that i created them using php artisan make:model Buildings -m

The new model i created after i removed the (buildings) model is php artisan make:model Building Notice that i just created a new model without 's'

Now in my User model i have created method :

public function UserAssignedBuilding(){
        return $this->hasManyThrough('App\Building','App\Area','user_id','area_id');
    }

Building.php Model file

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Building extends Model
{
    protected $table = 'buildings';

    public function areas(){
        $this->belongsTo('App\Area');
    }

}

Area.php Model file:

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Area extends Model
{
    protected $fillable = [
        'name'
    ];

    public function users(){
        return $this->belongsToMany('App\User','area_user','area_id','user_id');
    }

    public function buildings(){
        return $this->hasMany('App\Building');
    }
}

In php artisan when i run the following command, to get the user assigned buildings:

>>> User::find(4)->UserAssignedBuilding
PHP warning:  include(C:\xampp\htdocs\hse\vendor\composer/../../app/Buildings.php): failed to open stream: No such file or directory in C:\xampp\htdocs\hse\vendor\composer\ClassLoader.php on line 444

It seems that the error is the framework trying to load the (Buildings.php) model file, which i had already delete it and created (Building.php) instead .

I run the following :

C:\xampp\htdocs\hse>composer dumpautoload
Generating optimized autoload files
> Illuminate\Foundation\ComposerScripts::postAutoloadDump
> @php artisan package:discover
Discovered Package: fideloper/proxy
Discovered Package: laravel/tinker
Package manifest generated successfully.

But issue not fixed

Also tried to get buildings rows, other error showing:-

>>> Building::all()
PHP Fatal error:  Class 'Building' not found in eval()'d code on line 1

In your command you are missing model namespace

It should be

App\User::find(4)->UserAssignedBuilding

And

App\Building::all()

Also change method UserAssignedBuilding to buildings

The error is showing in Tinker (php artisan tinker) , When i dumped the composer autoload file

composer dump-autoload

Then tried again in tinker , the same error is showing like the composer dump command did not do it work, but when i close the current tinker and open new one (php artisan tinker) , every thing now work perfectly .

So , the solution in brief is when you run the dumpautoload command, you need to restart the tinker to see the changes.

I faced the same issue but in my case the problem was case sensitivity of composer autoload.

I had created user class (with small 'u') using composer artisan make. So it created user.php file for me. Afterward, I decided I like User (with capital 'U') more, so I changed the class name but not the containing PHP file.

So the problem was composer was looking for User.php file instead of user.php. changing the containing file to User.php did the job for me.