def test_cleared_but_file_given(self):
"""
If we check the clear checkbox, but also submit a file, the
file overrides.
"""
field = ClearableFileField()
result = field.clean([self.upload, '1'])
self.assertEqual(result, self.upload)
def test_not_cleared(self):
"""
If the clear checkbox is not checked, the ``FileField`` data
is returned normally.
"""
field = ClearableFileField()
result = field.clean([self.upload, '0'])
self.assertEqual(result, self.upload)
def test_cleared_but_file_given(self):
"""
If we check the clear checkbox, but also submit a file, the
file overrides.
"""
field = ClearableFileField()
result = field.clean([self.upload, '1'])
self.assertEqual(result, self.upload)
def test_not_cleared(self):
"""
If the clear checkbox is not checked, the ``FileField`` data
is returned normally.
"""
field = ClearableFileField()
result = field.clean([self.upload, '0'])
self.assertEqual(result, self.upload)
def test_cleared(self):
"""
If the clear checkbox is checked and the file input empty, the
field returns a value that is able to get a normal model
``FileField`` to clear itself.
This is actually a bit tricky/hacky in the implementation, see
the docstring of ``form_utils.fields.FakeEmptyFieldFile`` for
details. Here we just test the results.
"""
doc = Document.objects.create(myfile='something.txt')
field = ClearableFileField(required=False)
result = field.clean(['', '1'])
doc._meta.get_field('myfile').save_form_data(doc, result)
doc.save()
doc = Document.objects.get(pk=doc.pk)
self.assertEqual(doc.myfile, '')
def test_custom_template(self):
"""
We can pass in a custom template and it will be passed on to
the widget.
"""
tpl = 'Clear: %(checkbox)s %(input)s'
field = ClearableFileField(template=tpl)
self.assertEqual(field.widget.template, tpl)
def test_cleared(self):
"""
If the clear checkbox is checked and the file input empty, the
field returns a value that is able to get a normal model
``FileField`` to clear itself.
This is actually a bit tricky/hacky in the implementation, see
the docstring of ``form_utils.fields.FakeEmptyFieldFile`` for
details. Here we just test the results.
"""
doc = Document.objects.create(myfile='something.txt')
field = ClearableFileField(required=False)
result = field.clean(['', '1'])
doc._meta.get_field('myfile').save_form_data(doc, result)
doc.save()
doc = Document.objects.get(pk=doc.pk)
self.assertEqual(doc.myfile, '')
def test_custom_file_field_required(self):
"""
If we pass in our own ``file_field`` its required value is
used for the composite field.
"""
file_field = forms.ImageField(required=False)
field = ClearableFileField(file_field=file_field)
self.assertFalse(field.required)
def test_custom_file_field(self):
"""
We can pass in our own ``file_field`` rather than using the
default ``forms.FileField``.
"""
file_field = forms.ImageField()
field = ClearableFileField(file_field=file_field)
self.assertTrue(field.fields[0] is file_field)
def test_custom_file_field_widget_used(self):
"""
If we pass in our own ``file_field`` its widget is used for
the internal file field.
"""
widget = ImageWidget()
file_field = forms.ImageField(widget=widget)
field = ClearableFileField(file_field=file_field)
self.assertTrue(field.fields[0].widget is widget)
class TestForm(forms.Form):
f = ClearableFileField()
def formfield_for_dbfield(self, db_field, **kwargs):
field = super(ClearableFileFieldsAdmin, self).formfield_for_dbfield(
db_field, **kwargs)
if isinstance(field, forms.FileField):
field = ClearableFileField(field)
return field
