Fixed #20555 -- Make subwidget id attribute available
In `BoundField.__iter__`, the widget's id attribute is now passed to each subwidget. A new id_for_label property was added to ChoiceInput.
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@ -434,7 +434,9 @@ class BoundField(object):
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This really is only useful for RadioSelect widgets, so that you can
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iterate over individual radio buttons in a template.
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"""
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for subwidget in self.field.widget.subwidgets(self.html_name, self.value()):
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id_ = self.field.widget.attrs.get('id') or self.auto_id
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attrs = {'id': id_} if id_ else {}
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for subwidget in self.field.widget.subwidgets(self.html_name, self.value(), attrs):
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yield subwidget
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def __len__(self):
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@ -601,16 +601,15 @@ class ChoiceInput(SubWidget):
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self.choice_value = force_text(choice[0])
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self.choice_label = force_text(choice[1])
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self.index = index
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if 'id' in self.attrs:
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self.attrs['id'] += "_%d" % self.index
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def __str__(self):
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return self.render()
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def render(self, name=None, value=None, attrs=None, choices=()):
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name = name or self.name
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value = value or self.value
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attrs = attrs or self.attrs
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if 'id' in self.attrs:
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label_for = format_html(' for="{0}_{1}"', self.attrs['id'], self.index)
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if self.id_for_label:
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label_for = format_html(' for="{0}"', self.id_for_label)
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else:
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label_for = ''
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return format_html('<label{0}>{1} {2}</label>', label_for, self.tag(), self.choice_label)
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@ -619,13 +618,15 @@ class ChoiceInput(SubWidget):
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return self.value == self.choice_value
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def tag(self):
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if 'id' in self.attrs:
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self.attrs['id'] = '%s_%s' % (self.attrs['id'], self.index)
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final_attrs = dict(self.attrs, type=self.input_type, name=self.name, value=self.choice_value)
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if self.is_checked():
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final_attrs['checked'] = 'checked'
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return format_html('<input{0} />', flatatt(final_attrs))
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@property
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def id_for_label(self):
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return self.attrs.get('id', '')
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class RadioChoiceInput(ChoiceInput):
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input_type = 'radio'
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@ -590,25 +590,26 @@ Selector and checkbox widgets
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.. code-block:: html
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<div class="myradio">
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<label><input type="radio" name="beatles" value="john" /> John</label>
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<label for="id_beatles_0"><input id="id_beatles_0" name="beatles" type="radio" value="john" /> John</label>
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</div>
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<div class="myradio">
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<label><input type="radio" name="beatles" value="paul" /> Paul</label>
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<label for="id_beatles_1"><input id="id_beatles_1" name="beatles" type="radio" value="paul" /> Paul</label>
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</div>
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<div class="myradio">
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<label><input type="radio" name="beatles" value="george" /> George</label>
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<label for="id_beatles_2"><input id="id_beatles_2" name="beatles" type="radio" value="george" /> George</label>
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</div>
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<div class="myradio">
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<label><input type="radio" name="beatles" value="ringo" /> Ringo</label>
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<label for="id_beatles_3"><input id="id_beatles_3" name="beatles" type="radio" value="ringo" /> Ringo</label>
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</div>
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That included the ``<label>`` tags. To get more granular, you can use each
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radio button's ``tag`` and ``choice_label`` attributes. For example, this template...
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radio button's ``tag``, ``choice_label`` and ``id_for_label`` attributes.
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For example, this template...
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.. code-block:: html+django
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{% for radio in myform.beatles %}
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<label>
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<label for="{{ radio.id_for_label }}">
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{{ radio.choice_label }}
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<span class="radio">{{ radio.tag }}</span>
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</label>
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@ -618,31 +619,41 @@ Selector and checkbox widgets
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.. code-block:: html
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<label>
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John
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<span class="radio"><input type="radio" name="beatles" value="john" /></span>
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</label>
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<label>
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Paul
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<span class="radio"><input type="radio" name="beatles" value="paul" /></span>
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</label>
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<label>
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George
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<span class="radio"><input type="radio" name="beatles" value="george" /></span>
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</label>
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<label>
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Ringo
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<span class="radio"><input type="radio" name="beatles" value="ringo" /></span>
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</label>
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<label for="id_beatles_0">
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John
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<span class="radio"><input id="id_beatles_0" name="beatles" type="radio" value="john" /></span>
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</label>
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If you decide not to loop over the radio buttons -- e.g., if your template simply includes
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``{{ myform.beatles }}`` -- they'll be output in a ``<ul>`` with ``<li>`` tags, as above.
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<label for="id_beatles_1">
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Paul
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<span class="radio"><input id="id_beatles_1" name="beatles" type="radio" value="paul" /></span>
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</label>
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<label for="id_beatles_2">
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George
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<span class="radio"><input id="id_beatles_2" name="beatles" type="radio" value="george" /></span>
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</label>
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<label for="id_beatles_3">
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Ringo
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<span class="radio"><input id="id_beatles_3" name="beatles" type="radio" value="ringo" /></span>
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</label>
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If you decide not to loop over the radio buttons -- e.g., if your template
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simply includes ``{{ myform.beatles }}`` -- they'll be output in a ``<ul>``
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with ``<li>`` tags, as above.
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.. versionchanged:: 1.6
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The outer ``<ul>`` container will now receive the ``id`` attribute defined on
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the widget.
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.. versionchanged:: 1.7
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When looping over the radio buttons, the ``label`` and ``input`` tags include
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``for`` and ``id`` attributes, respectively. Each radio button has an
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``id_for_label`` attribute to output the element's ID.
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``CheckboxSelectMultiple``
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~~~~~~~~~~~~~~~~~~~~~~~~~~
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@ -666,6 +677,12 @@ the widget.
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Like :class:`RadioSelect`, you can now loop over the individual checkboxes making
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up the lists. See the documentation of :class:`RadioSelect` for more details.
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.. versionchanged:: 1.7
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When looping over the checkboxes, the ``label`` and ``input`` tags include
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``for`` and ``id`` attributes, respectively. Each checkbox has an
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``id_for_label`` attribute to output the element's ID.
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.. _file-upload-widgets:
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File upload widgets
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@ -145,6 +145,13 @@ Minor features
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* Explicit :class:`~django.db.models.OneToOneField` for
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:ref:`multi-table-inheritance` are now discovered in abstract classes.
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* The ``<label>`` and ``<input>`` tags rendered by
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:class:`~django.forms.RadioSelect` and
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:class:`~django.forms.CheckboxSelectMultiple` when looping over the radio
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buttons or checkboxes now include ``for`` and ``id`` attributes, respectively.
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Each radio button or checkbox includes an ``id_for_label`` attribute to
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output the element's ID.
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Backwards incompatible changes in 1.7
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=====================================
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@ -833,6 +833,22 @@ beatle J R Ringo False""")
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with self.assertRaises(IndexError):
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r[42]
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def test_subwidget(self):
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# Each subwidget tag gets a separate ID when the widget has an ID specified
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self.assertHTMLEqual("\n".join([c.tag() for c in CheckboxSelectMultiple(attrs={'id': 'abc'}).subwidgets('letters', list('ac'), choices=zip(list('abc'), list('ABC')))]), """<input checked="checked" type="checkbox" name="letters" value="a" id="abc_0" />
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<input type="checkbox" name="letters" value="b" id="abc_1" />
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<input checked="checked" type="checkbox" name="letters" value="c" id="abc_2" />""")
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# Each subwidget tag does not get an ID if the widget does not have an ID specified
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self.assertHTMLEqual("\n".join([c.tag() for c in CheckboxSelectMultiple().subwidgets('letters', list('ac'), choices=zip(list('abc'), list('ABC')))]), """<input checked="checked" type="checkbox" name="letters" value="a" />
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<input type="checkbox" name="letters" value="b" />
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<input checked="checked" type="checkbox" name="letters" value="c" />""")
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# The id_for_label property of the subwidget should return the ID that is used on the subwidget's tag
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self.assertHTMLEqual("\n".join(['<input type="checkbox" name="letters" value="%s" id="%s" />' % (c.choice_value, c.id_for_label) for c in CheckboxSelectMultiple(attrs={'id': 'abc'}).subwidgets('letters', [], choices=zip(list('abc'), list('ABC')))]), """<input type="checkbox" name="letters" value="a" id="abc_0" />
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<input type="checkbox" name="letters" value="b" id="abc_1" />
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<input type="checkbox" name="letters" value="c" id="abc_2" />""")
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def test_multi(self):
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class MyMultiWidget(MultiWidget):
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def decompress(self, value):
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