first commit

common/Workspaces/Traits/BelongsToWorkspace.php

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+<?php
+
+namespace Common\Workspaces\Traits;
+
+use Common\Workspaces\ActiveWorkspace;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Casts\Attribute;
+use Illuminate\Database\Eloquent\Model;
+
+trait BelongsToWorkspace
+{
+    protected string $ownerColumn = 'user_id';
+
+    protected static function booted(): void
+    {
+        static::creating(function (Model $builder) {
+            $builder->workspace_id = app(ActiveWorkspace::class)->id;
+        });
+    }
+
+    public function scopeForActiveWorkspaceOrOwner(Builder $builder, int|string $userId): Builder
+    {
+        if ($workspaceId = app(ActiveWorkspace::class)->id) {
+            $builder->where('workspace_id', $workspaceId);
+        }  else {
+            $builder->where($this->ownerColumn, $userId);
+        }
+        return $builder;
+    }
+
+    protected function workspaceId(): Attribute
+    {
+        return Attribute::make(
+            get: fn($value) => $value ?? 0,
+            set: fn($value) => $value ?? 0,
+        );
+    }
+}