fix voor valeria

models/user.py

@@ -1,5 +1,6 @@
 import sqlite3
 from datetime import datetime
+from models.database import Database
 from services.encryption import Encryption
 
 class User:
@@ -31,15 +32,21 @@ class User:
 
     def load_by_username(self):
         cur = self.connection.cursor()
-        row = cur.execute("SELECT * FROM users WHERE username = ?", (self.username,)).fetchone()
+        rows = cur.execute("SELECT * FROM users").fetchall()
         
-        if row == None:
-            return False
-
-        self._set_row_values(row)
-
+        found_user = None
+        for row in rows:
+            user = User(Database.connection)._set_row_values(row)
+            if user.username == self.username:
+                found_user = user
+                break
+            
         cur.close()
-        return True
+        
+        if found_user:
+            return True
+        else:
+            return False
 
     def save(self):
         cur = self.connection.cursor()