first version

kirby/src/Cms/ModelPermissions.php

@@ -0,0 +1,68 @@
+<?php
+
+namespace Kirby\Cms;
+
+abstract class ModelPermissions
+{
+    protected $category;
+    protected $model;
+    protected $options;
+    protected $permissions;
+    protected $user;
+
+    public function __call(string $method, array $arguments = [])
+    {
+        return $this->can($method);
+    }
+
+    public function __construct(Model $model)
+    {
+        $this->model       = $model;
+        $this->options     = $model->blueprint()->options();
+        $this->user        = $model->kirby()->user() ?? User::nobody();
+        $this->permissions = $this->user->role()->permissions();
+    }
+
+    /**
+     * Improved var_dump output
+     *
+     * @return array
+     */
+    public function __debuginfo(): array
+    {
+        return $this->toArray();
+    }
+
+    public function can(string $action): bool
+    {
+        if ($this->user->role()->id() === 'nobody') {
+            return false;
+        }
+
+        if (method_exists($this, 'can' . $action) === true && $this->{'can' . $action}() === false) {
+            return false;
+        }
+
+        if (isset($this->options[$action]) === true && $this->options[$action] === false) {
+            return false;
+        }
+
+        return $this->permissions->for($this->category, $action);
+    }
+
+    public function cannot(string $action): bool
+    {
+        return $this->can($action) === false;
+    }
+
+    public function toArray(): array
+    {
+        $array = [];
+
+        foreach ($this->options as $key => $value) {
+            $array[$key] = $this->can($key);
+        }
+
+        return $array;
+    }
+}