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Fixed #30998 -- Added ModelChoiceIteratorValue to pass the model instance to ChoiceWidget.create_option().

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This commit is contained in:
Jon Dufresne 2019-11-17 15:41:23 -08:00 • committed by Mariusz Felisiak
parent 5da85ea737
commit 67ea35df52
4 changed files with 152 additions and 6 deletions
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26
tests/model_forms/test_modelchoicefield.py
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@ -260,6 +260,32 @@ class ModelChoiceFieldTests(TestCase):
self.assertIsInstance(field.choices, CustomModelChoiceIterator)
def test_choice_iterator_passes_model_to_widget(self):
class CustomCheckboxSelectMultiple(CheckboxSelectMultiple):
def create_option(self, name, value, label, selected, index, subindex=None, attrs=None):
option = super().create_option(name, value, label, selected, index, subindex, attrs)
# Modify the HTML based on the object being rendered.
c = value.instance
option['attrs']['data-slug'] = c.slug
return option
class CustomModelMultipleChoiceField(forms.ModelMultipleChoiceField):
widget = CustomCheckboxSelectMultiple
field = CustomModelMultipleChoiceField(Category.objects.all())
self.assertHTMLEqual(
field.widget.render('name', []), (
'<ul>'
'<li><label><input type="checkbox" name="name" value="%d" '
'data-slug="entertainment">Entertainment</label></li>'
'<li><label><input type="checkbox" name="name" value="%d" '
'data-slug="test">A test</label></li>'
'<li><label><input type="checkbox" name="name" value="%d" '
'data-slug="third-test">Third</label></li>'
'</ul>'
) % (self.c1.pk, self.c2.pk, self.c3.pk),
)
def test_custom_choice_iterator_passes_model_to_widget(self):
class CustomModelChoiceValue:
def __init__(self, value, obj):
self.value = value