using split in my flask wtf form

[robertkwild]

hi all,

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

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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

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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

[deanhystad]

un is a field, not a string. un.data would get the string, but I don't think un.data is available inside the form like that.

I think what you want to do is write a custom validator.

https://wtforms.readthedocs.io/en/2.3.x/validators/
https://stackoverflow.com/questions/5032...sing-flask

It would look something like the code below. Beware, untested.

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from flask_wtf import FlaskForm from wtforms import StringField, PasswordField, ValidationError from wtforms.validators import InputRequired import re     class PasswordForm(FlaskForm):     username = StringField('Username', [InputRequired(message='please enter your Username')])     old_password = PasswordField('Current Password', [InputRequired(message='please enter your current password')])     password = PasswordField('New Password', [InputRequired(message='please enter your new password')])     confirm_password = PasswordField('Confirm New Password')       def validate_password(form, field):         """Validate password field."""         if field.data == form.old_password.data:             raise ValidationError('new password cannot be the same as current password.')         if field.data != form.confirm_password.data:             raise ValidationError('passwords do not match.')         if len(field.data < 12):             raise ValidationError('must be at least 12 characters long')         if re.match(r"[A-Z]", field.data) is None:             raise ValidationError('must contain an upper case letter.')         if re.match(r"[a-z]", field.data) is None:             raise ValidationError('must contain a lower case letter.')         if re.match(r"[0-9]", field.data) is None:             raise ValidationError('must contain a digit.')         if re.match(r"[\¬\!\"\£\$\%\^\&\*\(\)\_\+\`\-\=\{\}\:\@\~\<\>\?\[\]\;\'\#\,\.\/\\\|]", field.data) is None:             raise ValidationError('must contain a special character.')         if form.username.data is not None:             if field.data in form.username.data.split():                 raise ValidationError('cannot be your first or last name.')