Initial commit

app/Models/Scopes/UserScope.php

@@ -0,0 +1,45 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Models\Scopes;
+
+use App\Models\Contracts\BelongsToUser;
+use App\Models\User;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Scope;
+use Illuminate\Support\Facades\Auth;
+use Illuminate\Support\Str;
+use Webmozart\Assert\Assert;
+
+class UserScope implements Scope
+{
+    public function apply(Builder $builder, Model $model): void
+    {
+        if (
+            ! $model instanceof BelongsToUser
+            || ! Auth::check()
+        ) {
+            return;
+        }
+
+        /** @var User $user */
+        $user = Auth::user();
+        Assert::notNull($user);
+
+        $userId = $user->getKey();
+        $userColumnPath = $model->getUserColumnId();
+
+        if (! Str::contains($userColumnPath, '.')) {
+            $builder->where($model->getTable().'.'.$userColumnPath, $userId);
+
+            return;
+        }
+
+        $relationPath = Str::beforeLast($userColumnPath, '.');
+        $column = Str::afterLast($userColumnPath, '.');
+
+        $builder->whereHas($relationPath, fn (Builder $query) => $query->where($column, $userId));
+    }
+}