Add attribute 'step' to FloatField.

[Jacob Rief]

If someone wants to use the step attribute as provided by the HTML field
<input type="number" ...> , she/he has to specify that using for instance
FloatField(widget=NumberInput(attrs={'step': 0.5})).

Since the HTML standard offers a step attribute on input fields of type="number",
this feature shall be reflected by Django's FloatField and optionally DecimalField,
rather than having to parametrize the widget.

Min- and max-values are already supported by the FloatField, so the step-value
would make sense here as well. It furthermore would require to revalidate the
step-value by Django's Form validation, rather than by HTML alone.

Patch: ​https://github.com/django/django/pull/14162

[Markus Holtermann]

Thank you. Sounds like a perfectly valid use case.

[Tim Graham]

​django-developers discussion

[Kapil Bansal]

​PR