How to set the html class attribute in Django's forms.py

Thing you want to do

I want to specify the ** class attribute ** that is set in the ** html tag ** when I write the form to be displayed in the template with ** forms.py **.

forms.py


class Form(forms.Form):
    sample = forms.IntegerField(label="hoge")

If this is left as it is, the output will be as follows, and the ** class attribute ** cannot be set in the ** input ** tag.

<input type="number" name="sample" required="" id="id_sample">

solution

Override the ** \ _ \ _ init \ _ \ _ ** methods in ** forms.py **.

forms.py


class Form(forms.Form):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.fields['sample'].widget.attrs['class'] = 'name of the class'

    sample = forms.IntegerField(label="hoge")

There are two points to note.

When to use

Use this when you want to adjust the appearance with ** css ** when you define a form with ** forms.py **.

reference

stackoverflow question https://stackoverflow.com/questions/401025/define-css-class-in-django-forms

Referenced answer https://stackoverflow.com/a/401057

Questioner https://stackoverflow.com/users/22306/ashchristopher

Respondent https://stackoverflow.com/users/22306/ashchristopher

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