file = r'resources\views\test-sessions\fill.blade.php'
with open(file, 'r', encoding='utf-8') as f:
    c = f.read()

# Tambah onsubmit di form tag
old = '<form method="POST" action="{{ route(\'test-sessions.submit\', $session) }}">'
new = '<form method="POST" action="{{ route(\'test-sessions.submit\', $session) }}" onsubmit="return validateForm()">'

if old in c:
    c = c.replace(old, new)
    print("form onsubmit: OK")
else:
    print("GAGAL - cek:")
    idx = c.find('test-sessions.submit')
    print(repr(c[idx-10:idx+80]))

with open(file, 'w', encoding='utf-8') as f:
    f.write(c)