redesign for mulituser

change validation concept (client and server)
using entities

app/Controllers/Accounts.php

@@ -0,0 +1,44 @@
+<?php namespace App\Controllers;
+
+use CodeIgniter\Session\Session;
+use App\Models\mAccounts;
+use Config\App;
+
+class Accounts extends BaseController {
+    private \App\Models\mAccounts $accounts;
+
+    public function __construct() {
+		$this->accounts = new mAccounts;
+	}
+  
+    public function index(){
+        if ($this->request->is('post')) {
+            return $this->editAccount();
+        }
+        else
+            return $this->viewAccountsTree();
+    }
+
+    private function viewAccountsTree($data = array()){
+		helper('form');
+		$data = array_merge($data,$this->accounts->getTreeData());
+		$data['ddlist'] = $this->accounts->getDropDownList( 'all', false,true );
+		return view('accountstree',$data);
+		}
+
+	private function editAccount(){
+		$rules = [
+			'description'	=> 'required',
+		];
+		if (! $this->validate($rules)) {
+            return $this->viewAccountsTree(['errors'=>$this->validator->getErrors()]);
+		}
+        $saveDB = array();
+		if ($this->accounts->saveAccount($this->request->getPost()))
+            $saveDB = ['mode'=>'alert-success','message'=>'Erfolgreich gespeichert'];
+        else
+            $saveDB = ['mode'=>'alert-danger','message'=>'Speichern fehlgeschlagen'];
+
+		return $this->viewAccountsTree(['saveDB'=>$saveDB]);
+	}
+};