#20765: HTML5 number input type not working for DecimalField with big
decimal_places
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Reporter: aleksey.kladov@… | Owner: nobody
Type: Bug | Status: new
Component: Forms | Version: 1.6-beta-1
Severity: Normal | Keywords:
Triage Stage: Unreviewed | Has patch: 0
Easy pickings: 0 | UI/UX: 0
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DecimalFiled's widget is a NumberInput with step attribute equal to
10^-decimal_placecese^.
https://github.com/django/django/blob/stable/1.6.x/django/forms/fields.py#L374).
If decimal_places is too big(the exact value for `big` should be found
here http://www.w3.org/TR/2012/WD-html5-20121025/common-microsyntaxes.html
#rules-for-parsing-floating-point-number-values) the step value parses to
0, which is not valid (http://www.w3.org/TR/2012/WD-html5-20121025/common-
input-element-attributes.html#attr-input-step). It is not good in itself,
but it also causes surprising and unwanted behaviour.
For example in Google Chrome input with type="number" and
step="0.0000000000000000000000000000001" accepts only integer values!
A possible fix is to add optional `step` argument to DecimalField and,
and if it is not provided just use "any".
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Ticket URL: <https://code.djangoproject.com/ticket/20765>
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