Basic tenant structure

app/Scopes/CommonModel.php

@@ -0,0 +1,10 @@
+<?php
+
+namespace App\Scopes;
+
+use Illuminate\Database\Eloquent\Model;
+
+abstract class CommonModel extends Model
+{
+
+}

app/Scopes/InstancedModel.php

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+<?php
+
+namespace App\Scopes;
+
+use Illuminate\Database\Eloquent\Model;
+
+abstract class InstancedModel extends Model
+{
+    protected static function booted()
+    {
+        static::addGlobalScope(new SiteScope());
+    }
+}

app/Scopes/SiteScope.php

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+<?php
+namespace App\Scopes;
+
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Scope;
+
+class SiteScope implements Scope
+{
+    public function apply(Builder $builder, Model $model): void
+    {
+        $builder->where($model->getTable() . '.tenant', app('tenant')->slug);
+    }
+}