app/user/forms.py

from flask_wtf import FlaskForm
from wtforms import StringField, PasswordField, BooleanField, SubmitField, TextAreaField, SelectField
from wtforms.validators import ValidationError, DataRequired, Email, EqualTo, Length

from app.models import User

class LoginForm(FlaskForm):
  email = StringField('Email', validators=[DataRequired()])
  password = PasswordField('Password', validators=[DataRequired()])
  remember_me = BooleanField('Remember Me')
  submit = SubmitField('Sign In')

class RequestPasswordResetForm(FlaskForm):
  email = StringField('Email', validators=[DataRequired()])
  submit = SubmitField('Reset Password')

class PasswordResetForm(FlaskForm):
  email = StringField('Email', validators=[DataRequired()])
  password = PasswordField('New Password (minimum 8 characters)', validators=[DataRequired()])
  password2 = PasswordField(
    'Repeat New Password', validators=[DataRequired(), EqualTo('password')])
  submit = SubmitField('Reset Password')

  def validate_password(self, password):
    if len(password.data) < 8 or len(password.data) > 24:
      raise ValidationError('Password must be between 8 and 24 characters!')

class RegistrationForm(FlaskForm):
  #username = StringField('Username', validators=[DataRequired()])
  email = StringField('Email', validators=[DataRequired(), Email()])
  password = PasswordField('Password (minimum 8 characters)', validators=[DataRequired()])
  password2 = PasswordField(
    'Repeat Password', validators=[DataRequired(), EqualTo('password')])
  #accept_tos = BooleanField('By checking this box, I accept <a href='http://www.google.com'>Terms & Conditions</a>', validators=[DataRequired()])
  submit = SubmitField('Register')

  def validate_email(self, email):
    user = User.query.filter_by(email=email.data).first()
    if user is not None:
      raise ValidationError('Please use a different email address!')

  def validate_password(self, password):
    if len(password.data) < 8 or len(password.data) > 24:
      raise ValidationError('Password must be between 8 and 24 characters!')

class ProfileForm(FlaskForm):
  email = StringField('Email', validators=[Length(min=0, max=140)], render_kw={'readonly': True})
  organization = StringField('Organization', validators=[Length(min=0, max=140)], render_kw={'readonly': True})
  role = StringField('Role', validators=[Length(min=0, max=140)], render_kw={'readonly': True})
  fullname = StringField('Fullname', validators=[Length(min=0, max=140)])
  ssh_public_key = TextAreaField('SSH Public Key')
  registered_on = StringField('Registered on', validators=[Length(min=0, max=140)], render_kw={'readonly': True})
  confirmed_on = StringField('Confirmed on', validators=[Length(min=0, max=140)], render_kw={'readonly': True})
  last_logged_in = StringField('Last logged in on', validators=[Length(min=0, max=140)], render_kw={'readonly': True})
  submit = SubmitField('Submit')

  def __init__(self, original_email, *args, **kwargs):
    super(ProfileForm, self).__init__(*args, **kwargs)
    self.original_email = original_email

  def validate_ssh_public_key(self, ssh_public_key):
    if len(ssh_public_key.data) < 256 or len(ssh_public_key.data) > 1024:
      raise ValidationError('Please enter valid SSH Public Key!')