newforms: Implemented CheckboxSelectMultiple
git-svn-id: http://code.djangoproject.com/svn/django/trunk@4132 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Adrian Holovaty
parent
fe4af48ec8
commit
8aae90c0e5
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@ -5,7 +5,7 @@ HTML Widget classes
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__all__ = (
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'Widget', 'TextInput', 'PasswordInput', 'HiddenInput', 'FileInput',
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'Textarea', 'CheckboxInput',
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'Select', 'SelectMultiple', 'RadioSelect',
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'Select', 'SelectMultiple', 'RadioSelect', 'CheckboxSelectMultiple',
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)
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from util import smart_unicode
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@ -176,5 +176,24 @@ class RadioSelect(Select):
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return id_
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id_for_label = classmethod(id_for_label)
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class CheckboxSelectMultiple(Widget):
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pass
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class CheckboxSelectMultiple(SelectMultiple):
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def render(self, name, value, attrs=None, choices=()):
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if value is None: value = []
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final_attrs = self.build_attrs(attrs, name=name)
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output = [u'<ul>']
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str_values = set([smart_unicode(v) for v in value]) # Normalize to strings.
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cb = CheckboxInput(final_attrs)
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for option_value, option_label in chain(self.choices, choices):
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option_value = smart_unicode(option_value)
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field_name = unicode(name + option_value)
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rendered_cb = cb.render(field_name, (option_value in str_values))
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output.append(u'<li><label>%s %s</label></li>' % (rendered_cb, escape(smart_unicode(option_label))))
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output.append(u'</ul>')
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return u'\n'.join(output)
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def id_for_label(self, id_):
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# See the comment for RadioSelect.id_for_label()
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if id_:
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id_ += '_0'
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return id_
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id_for_label = classmethod(id_for_label)
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@ -475,6 +475,113 @@ beatle J P Paul False
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beatle J G George False
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beatle J R Ringo False
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# CheckboxSelectMultiple Widget ###############################################
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>>> w = CheckboxSelectMultiple()
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>>> print w.render('beatles', ['J'], choices=(('J', 'John'), ('P', 'Paul'), ('G', 'George'), ('R', 'Ringo')))
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<ul>
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<li><label><input checked="checked" type="checkbox" name="beatlesJ" /> John</label></li>
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<li><label><input type="checkbox" name="beatlesP" /> Paul</label></li>
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<li><label><input type="checkbox" name="beatlesG" /> George</label></li>
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<li><label><input type="checkbox" name="beatlesR" /> Ringo</label></li>
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</ul>
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>>> print w.render('beatles', ['J', 'P'], choices=(('J', 'John'), ('P', 'Paul'), ('G', 'George'), ('R', 'Ringo')))
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<ul>
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<li><label><input checked="checked" type="checkbox" name="beatlesJ" /> John</label></li>
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<li><label><input checked="checked" type="checkbox" name="beatlesP" /> Paul</label></li>
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<li><label><input type="checkbox" name="beatlesG" /> George</label></li>
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<li><label><input type="checkbox" name="beatlesR" /> Ringo</label></li>
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</ul>
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>>> print w.render('beatles', ['J', 'P', 'R'], choices=(('J', 'John'), ('P', 'Paul'), ('G', 'George'), ('R', 'Ringo')))
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<ul>
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<li><label><input checked="checked" type="checkbox" name="beatlesJ" /> John</label></li>
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<li><label><input checked="checked" type="checkbox" name="beatlesP" /> Paul</label></li>
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<li><label><input type="checkbox" name="beatlesG" /> George</label></li>
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<li><label><input checked="checked" type="checkbox" name="beatlesR" /> Ringo</label></li>
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</ul>
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If the value is None, none of the options are selected:
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>>> print w.render('beatles', None, choices=(('J', 'John'), ('P', 'Paul'), ('G', 'George'), ('R', 'Ringo')))
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<ul>
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<li><label><input type="checkbox" name="beatlesJ" /> John</label></li>
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<li><label><input type="checkbox" name="beatlesP" /> Paul</label></li>
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<li><label><input type="checkbox" name="beatlesG" /> George</label></li>
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<li><label><input type="checkbox" name="beatlesR" /> Ringo</label></li>
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</ul>
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If the value corresponds to a label (but not to an option value), none of the options are selected:
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>>> print w.render('beatles', ['John'], choices=(('J', 'John'), ('P', 'Paul'), ('G', 'George'), ('R', 'Ringo')))
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<ul>
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<li><label><input type="checkbox" name="beatlesJ" /> John</label></li>
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<li><label><input type="checkbox" name="beatlesP" /> Paul</label></li>
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<li><label><input type="checkbox" name="beatlesG" /> George</label></li>
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<li><label><input type="checkbox" name="beatlesR" /> Ringo</label></li>
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</ul>
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If multiple values are given, but some of them are not valid, the valid ones are selected:
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>>> print w.render('beatles', ['J', 'G', 'foo'], choices=(('J', 'John'), ('P', 'Paul'), ('G', 'George'), ('R', 'Ringo')))
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<ul>
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<li><label><input checked="checked" type="checkbox" name="beatlesJ" /> John</label></li>
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<li><label><input type="checkbox" name="beatlesP" /> Paul</label></li>
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<li><label><input checked="checked" type="checkbox" name="beatlesG" /> George</label></li>
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<li><label><input type="checkbox" name="beatlesR" /> Ringo</label></li>
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</ul>
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The value is compared to its str():
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>>> print w.render('nums', [2], choices=[('1', '1'), ('2', '2'), ('3', '3')])
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<ul>
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<li><label><input type="checkbox" name="nums1" /> 1</label></li>
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<li><label><input checked="checked" type="checkbox" name="nums2" /> 2</label></li>
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<li><label><input type="checkbox" name="nums3" /> 3</label></li>
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</ul>
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>>> print w.render('nums', ['2'], choices=[(1, 1), (2, 2), (3, 3)])
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<ul>
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<li><label><input type="checkbox" name="nums1" /> 1</label></li>
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<li><label><input checked="checked" type="checkbox" name="nums2" /> 2</label></li>
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<li><label><input type="checkbox" name="nums3" /> 3</label></li>
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</ul>
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>>> print w.render('nums', [2], choices=[(1, 1), (2, 2), (3, 3)])
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<ul>
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<li><label><input type="checkbox" name="nums1" /> 1</label></li>
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<li><label><input checked="checked" type="checkbox" name="nums2" /> 2</label></li>
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<li><label><input type="checkbox" name="nums3" /> 3</label></li>
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</ul>
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The 'choices' argument can be any iterable:
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>>> def get_choices():
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... for i in range(5):
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... yield (i, i)
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>>> print w.render('nums', [2], choices=get_choices())
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<ul>
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<li><label><input type="checkbox" name="nums0" /> 0</label></li>
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<li><label><input type="checkbox" name="nums1" /> 1</label></li>
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<li><label><input checked="checked" type="checkbox" name="nums2" /> 2</label></li>
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<li><label><input type="checkbox" name="nums3" /> 3</label></li>
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<li><label><input type="checkbox" name="nums4" /> 4</label></li>
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</ul>
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You can also pass 'choices' to the constructor:
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>>> w = CheckboxSelectMultiple(choices=[(1, 1), (2, 2), (3, 3)])
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>>> print w.render('nums', [2])
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<ul>
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<li><label><input type="checkbox" name="nums1" /> 1</label></li>
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<li><label><input checked="checked" type="checkbox" name="nums2" /> 2</label></li>
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<li><label><input type="checkbox" name="nums3" /> 3</label></li>
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</ul>
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If 'choices' is passed to both the constructor and render(), then they'll both be in the output:
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>>> print w.render('nums', [2], choices=[(4, 4), (5, 5)])
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<ul>
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<li><label><input type="checkbox" name="nums1" /> 1</label></li>
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<li><label><input checked="checked" type="checkbox" name="nums2" /> 2</label></li>
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<li><label><input type="checkbox" name="nums3" /> 3</label></li>
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<li><label><input type="checkbox" name="nums4" /> 4</label></li>
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<li><label><input type="checkbox" name="nums5" /> 5</label></li>
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</ul>
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>>> w.render('nums', ['ŠĐĆŽćžšđ'], choices=[('ŠĐĆŽćžšđ', 'ŠĐabcĆŽćžšđ'), ('ćžšđ', 'abcćžšđ')])
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u'<ul>\n<li><label><input type="checkbox" name="nums1" /> 1</label></li>\n<li><label><input type="checkbox" name="nums2" /> 2</label></li>\n<li><label><input type="checkbox" name="nums3" /> 3</label></li>\n<li><label><input checked="checked" type="checkbox" name="nums\u0160\u0110\u0106\u017d\u0107\u017e\u0161\u0111" /> \u0160\u0110abc\u0106\u017d\u0107\u017e\u0161\u0111</label></li>\n<li><label><input type="checkbox" name="nums\u0107\u017e\u0161\u0111" /> abc\u0107\u017e\u0161\u0111</label></li>\n</ul>'
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# CharField ###################################################################
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>>> f = CharField()
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