CODEWITHSUNDEEP
pythonflask-wtformswtforms
Anni
Anni

Reputation: 403

WTF BooleanField set custom value

I have the following:

forms.py:

student_account = BooleanField('student_account')

index.html

{{ form.student_account.label() }} {{ form.student_account(class="form-control") }}

And this code results into the following html:

<input id="student_account" name="student_account" type="checkbox" value="y">

How can I set the value to be 1 instead of 'y'? Why in fact all of the sudden, there is a 'y' as a value?

Upvotes: 0

Views: 1728

Answers (1)

snakecharmerb
snakecharmerb

Reputation: 55630

'y' is the default value for Boolean inputs' value attribute in wtforms.

According to the docstring for the base Input widget

By default, the _value() method will be called upon the associated field to provide the value= HTML attribute.

And BooleanField's _value method is

def _value(self):
    if self.raw_data:
        return text_type(self.raw_data[0])
    else:
        return "y"

If you really want a different value you could override it by setting it in the field's render_kw argument:

foo = BooleanField('bar', render_kw={'value': '1'})

or by subclassing BooleanField and overriding its _value method.

Usually there isn't much benefit in overriding this value; wtforms will automatically cast the value to a boolean when form.data is constructed.

from wtforms import Form, BooleanField
from werkzeug.datastructures import MultiDict

class MyForm(Form):
    b = BooleanField('MyBool')

f = MyForm(formdata=MultiDict({'b': 'y'})
f.data
{'b': True}

f = MyForm(formdata=MultiDict({})
f.data
{'b': False}

Upvotes: 2

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