Using split in my flask wtf form

Python Help
1

hi all,

im trying to put a split command in my code like so

class PasswordForm(FlaskForm):
    un = StringField('Username', [InputRequired(message='please enter your Username')])
    name = un.split(".")
    op = PasswordField('Current Password', [InputRequired(message='please enter your current password')])
    np = PasswordField('New Password', [InputRequired(message='please enter your new password'), EqualTo('cnp', message='must match confirm new password'), Length(min=12), Regexp('.*[a-z]', message='must contain one lower case'), Regexp('.*[A-Z]', message='must contain one upper case'), Regexp('.*[0-9]', message='must contain one number'), Regexp('.*[\¬\!\"\£\$\%\^\&\*\(\)\_\+\`\-\=\{\}\:\@\~\<\>\?\[\]\;\'\#\,\.\/\\\|]', message='must contain one special character')])
    cnp = PasswordField('Confirm New Password')

but i get this error when i run it in cmd

C:\python>python password.py
C:\python\password.py:14: SyntaxWarning: invalid escape sequence '\!'
  np = PasswordField('New Password', [InputRequired(message='please enter your new password'), EqualTo('cnp', message='must match confirm new password'), Length(min=12), Regexp('.*[a-z]', message='must contain one lower case'), Regexp('.*[A-Z]', message='must contain one upper case'), Regexp('.*[0-9]', message='must contain one number'), Regexp('.*[\¬\!\"\£\$\%\^\&\*\(\)\_\+\`\-\=\{\}\:\@\~\<\>\?\[\]\;\'\#\,\.\/\\\|]', message='must contain one special character')])
Traceback (most recent call last):
  File "C:\python\password.py", line 10, in <module>
    class PasswordForm(FlaskForm):
  File "C:\python\password.py", line 12, in PasswordForm
    name = un.split(".")
           ^^^^^^^^
AttributeError: 'UnboundField' object has no attribute 'split'

any help will be greatly appreciated

thanks,
rob

2

Look at the previous line in the code. You’re making un a StringField object. str objects have a split method, but StringField objects don’t.

3

so basically i cant use it with the un variable as its a stringfield?

sorry as im fairly new to python

4

form.un is the field object. form.un.data is the string, which you would access after creating an instance of your form to process submitted data.

5

tried

name = form.un.data.split(“.”)
name = form.un.split(“.”)

same error saying form is not defined

6

form = MyForm()

It sounds like you may not be familiar with WTForms and Flask-WTF. Manipulating data is done after creating an instance of the form, not when defining the class and fields. You should start with their docs first: Crash Course — WTForms Documentation (3.1.x) and Quickstart — Flask-WTF Documentation (1.2.x)