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Project Description


horae.groupselect provides a grouped Dropdown widget for zope.formlib using the default optgroup elements provided by HTML.


To use a grouped dropdown widget the previously used Choice field of the schema has to be replaced by a GroupedChoice field provided in horae.groupedselect.field. A GroupedChoice field takes the exactly same parameters as the stock Choice field but additionally an instance of a groups provider (implementing horae.groupedselect.interfaces.IGroups) has to be provided over the parameter groups. The mentioned groups provider converts the vocabulary of the field into a list of groups.

Imagine field to select a country and you would like to group them by region:

from zope import interface, implements
from zope.schema import vocabulary

from horae.groupedselect import field, interfaces

class Country(object):
    def __init__(self, region, country):
        self.region = region = country

class CountryGroups(object):

    def groups(self, vocabulary):
        Converts the given vocabulary into a list of groups:

            return (('Group 1', (term1, term2, term3)),
                    ('Group 2', (term6, term5, term6)),)
        groups = {}
        for term in vocabulary:
            if not term.value.region in groups:
                groups[term.value.region] = ()
            groups[term.value.region] = groups[term.value.region] + \
        return groups.items()

class ICountrySelection(interface.Interface):

    country = field.GroupedChoice(
        title = u'Country',
        vocabulary = vocabulary.SimpleVocabulary((
            # ...
                Country(u'Europe', u'Switzerland'),
                Country(u'Europe', u'Germany'),
                Country(u'Europe', u'Austria'),
                Country(u'Europe', u'France'),
            # ...
                Country(u'North America', u'USA'),
                Country(u'Europe', u'Canada'),
            # ...
        groups = CountryGroups()



1.0a1 (2012-01-16)

  • Initial release
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File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
horae.groupselect-1.0a1.tar.gz (4.0 kB) Copy SHA256 Checksum SHA256 Source Jan 16, 2012

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