flask wtform TypeError: __init__() takes from 1 to 2 positional arguments but 3 were given

python flask wtforms
jmrueda picture jmrueda · May 10, 2017 · Viewed 9.2k times · Source

I am having troubles with form validation. The country list is generated correctly, and previous forms worked fine. It is only breaking in POST requests.

Here is my forms.py:

from wtforms import Form, BooleanField, SelectField, \
                    StringField, PasswordField, SubmitField, validators, \
                    RadioField
from ..models import User
from pycountry import countries
...
## Account settings
# We get all COUNTRIES
COUNTRIES = [(c.name, c.name) for c in countries]
# edit profile
class ProfileForm(Form):
    username = StringField('name',[validators.Length(min=1, max=120), validators.InputRequired])
    email = StringField('email', [validators.Length(min=6, max=120), validators.Email()])
    company = StringField('name',[validators.Length(min=1, max=120)])
    country = SelectField('country', choices=COUNTRIES)
    news = BooleanField('news')

and here is the view:

@user.route('/profile/', methods=['GET', 'POST'])
@login_required
def profile():
    userid = current_user.get_id()
    user = User.query.filter_by(id=userid).first_or_404()
    print(user)
    form = ProfileForm(request.form)
    if request.method == 'POST' and form.validate():
        user.username = form.username.data
        ...
        return render_template('settings.html', form=form )
    else:
        form.username.data = user.username
        ...
        return render_template('settings.html', form=form )

Answer

jmrueda picture jmrueda · May 10, 2017

It should be validators.InputRequired() instead of validators.InputRequired. Thanks @jackevans

Related questions

How do you set a default value for a WTForms SelectField?

When attempting to set the default value of a SelectField with WTForms, I pass in value to the 'default' parameter like so. class TestForm(Form): test_field = SelectField("Test: ", choices=[(1, "Abc"), (2, "Def")], default=2) I have also tried the following. class …

Read More
WTForms: Install 'email_validator' for email validation support

Getting exception when running the following code for form validation. File "/Users/homeduvvuri/Documents/Learning/PartyGoUdemy/PartGo/user/forms.py", line 11, in BaseUserForm email = EmailField('Email', [validators.DataRequired(), validators.Email()]) File "/Users/homeduvvuri/Documents/Learning/PartyGoUdemy/PartGo/partgo-env/lib/python3.7/…

Read More
Flask-WTF - validate_on_submit() is never executed

I'm using Flask-WTF: Here is my form: from flask.ext.wtf import Form, TextField class BookNewForm(Form): name = TextField('Name') Here is the controller: @book.route('/book/new', methods=['GET', 'POST']) def customers_new(): form = BookNewForm() if form.is_…

Read More