add role model

backend/app/Model/Role.php

@@ -0,0 +1,41 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Model;
+
+use Hyperf\Database\Model\Relations\HasMany;
+use Hyperf\DbConnection\Model\Model;
+
+/**
+ * @property int $id
+ * @property string $name
+ * @property string $label
+ * @property string $description
+ * @property \Carbon\Carbon $created_at
+ * @property \Carbon\Carbon $updated_at
+ */
+class Role extends Model
+{
+    protected ?string $table = 'roles';
+
+    protected array $fillable = [
+        'name',
+        'label',
+        'description',
+    ];
+
+    protected array $casts = [
+        'id' => 'integer',
+        'created_at' => 'datetime',
+        'updated_at' => 'datetime',
+    ];
+
+    /**
+     * 角色下的用户
+     */
+    public function users(): HasMany
+    {
+        return $this->hasMany(User::class, 'role_id');
+    }
+}