#24858: get_foo_display with the ArrayField
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Reporter: MounirMesselmeni | Owner:
Type: Uncategorized | Status: new
Component: contrib.postgres | Version: 1.8
Severity: Normal | Resolution:
Keywords: | Triage Stage: Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Description changed by MounirMesselmeni:
Old description:
> I think using ArrayField as a many choices field would be awesome.
> Passing choices to ArrayField works fine with MultipleChoiceField on the
> form.
> But calling get_foo_display return a TypeError: unhashable type: 'list',
> maybe this method need to check if the field is an ArrayField it can
> return a string representation of the choices separated by comma.
>
> {{{#!python
> class Example(models.Model):
> CHOICES = (
> (1, 'value1'),
> (2, 'value2'),
> (3, 'value3'),
> )
>
> multi_choices_array = ArrayField(
> base_field=models.IntegerField(),
> choices=CHOICES,
> )
>
> example = Example.objects.create(multi_choices_array= [1, 2])
> example.get_multi_choices_array_display()
> # Will raise a Type Error exception
>
> }}}
New description:
I think using ArrayField as a many choices field would be awesome.
Passing choices to ArrayField works fine with MultipleChoiceField on the
form.
But calling get_foo_display return a TypeError: unhashable type: 'list',
maybe this method need to check if the field is an ArrayField it can
return a string representation of the choices separated by comma.
{{{#!python
class Example(models.Model):
CHOICES = (
(1, 'value1'),
(2, 'value2'),
(3, 'value3'),
)
multi_choices_array = ArrayField(
base_field=models.IntegerField(),
choices=CHOICES,
)
# Adding this method will show the values
def multi_choices_array_display(self):
result = ''
choices = dict(self.CHOICES)
for index, value in enumerate(self.multi_choices_array):
result += "{0}".format(choices[value])
if not index == len(self.multi_choices_array) - 1:
result += ', '
return result
example = Example.objects.create(multi_choices_array= [1, 2])
example.get_multi_choices_array_display()
# Will raise a Type Error exception
example.multi_choices_array_display()
# Will print 'value1, value2'
}}}
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Ticket URL: <https://code.djangoproject.com/ticket/24858#comment:3>
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