deform_bootstrap_extra 0.2.8

button()

Use this function in a Pyramid app to easily generate a Deform button with translated title and optionally a bootstrap icon.

from deform_bootstrap_extra.pyramid import button

lengthen()

Forms containing all inputs with the same size are extremely boring to look at. When the widths of the inputs vary, not only the user gets a better idea of how much to type in them, but the screen looks much more interesting and easier to scan visually.

The lengthen() function calculates input width based on the maxlength (which can optionally be inferred from a SQLAlchemy model property). Example usage:

from deform_bootstrap_extra.helpers import lengthen
import colander as c

class ContactSchema(CSRFSchema):
    name = c.SchemaNode(c.Str(), title=_("Name"), missing=None,
        **lengthen(Contact.name))  # this is a model property

from_now_on()

This Colander validator only accepts a time in the future. Example:

from deform_bootstrap_extra.schema import from_now_on
import colander as c

class PromotionSchema(CSRFSchema):
    scheduled = c.SchemaNode(c.DateTime(default_tzinfo=None),
        missing=c.null, title=_("Schedule"), validator=from_now_on)
    (...)

sch = PromotionSchema().bind(request=self.request, now=datetime.utcnow())

Trilean

A schema type that can represent true, false and null. Example:

from deform_bootstrap_extra.schema import Trilean
import colander as c
import deform.widget as w

class ContactSchema(CSRFSchema):
    (...)
    male = c.SchemaNode(Trilean(), title=_("Sex"), missing=None,
        widget=w.SelectWidget(values=[
            (c.null, _("- Choose -")),
            ('false', _("Female")),
            ('true', _("Male")),
    ]))