Hi!
I will test you code, but for now, try rewrite the form class, this way:
class MeasurementForm(forms.ModelForm):
width = forms.DecimalField(widget=MeasurementWidget())
height = forms.DecimalField(widget=MeasurementWidget())
length = forms.DecimalField(widget=MeasurementWidget())
class Meta:
model = Inventory
Cheers.
On Fri, Apr 11, 2014 at 11:25 AM, Mark Phillips
<[email protected]>wrote:
> I looked at the MultiWidget and tried to implement following a couple of
> examples, but I have run into a problem. I get this error when I try to
> open the admin form - type object 'MeasurementWidget' has no attribute
> 'attrs'
>
> widgets.py
> class MeasurementWidget(forms.MultiWidget):
> def __init__(self, attrs=None):
> widgets = (
> forms.textInput(attrs=attrs),
> forms.textInput(attrs=attrs),
> forms.textInput(attrs=attrs),
> )
> super(MeasurementWidget, self).__init__(widgets, attrs)
>
> def decompress(self, value):
> if value:
> frac = Fraction(value)
> num = frac.numerator
> denom = frac.denominator
> whole = num/denom
> if whole == 0:
> whole = ''
> numerator = num - (num/denom)*denom
> return [whole, numerator, denom]
> return ['', '', '']
>
> def format_output(self, rendered_widgets):
> return u''.join(rendered_widgets)
>
> def value_from_datadict(self, data, files, name):
> valuelist = [widget.value_from_datadict(data, files, name + '_%s'
> % i) for i, widget in enumerate(self.widgets)]
> try:
> if valuelist[0] == '':
> valuelist[0] = 0
> numerator = int(valuelist[0]) * int(valuelist[2]) +
> int(valuelist[1])
> denominator = int(valuelist[2])
> return Decimal(float(Fraction(numerator, denominator)))
> except ValueError:
> return ""
>
> models.py
> class Inventory(models.Model):
> location = models.ForeignKey(Location)
> room = models.ForeignKey(Room, blank=True, null=True)
> condition = models.ForeignKey(Condition)
> status = models.ForeignKey(Status)
> category = models.ForeignKey(Category)
> length = models.DecimalField(max_digits=5, decimal_places=3, default=0)
> width = models.DecimalField(max_digits=5, decimal_places=3, default=0)
> height = models.DecimalField(max_digits=5, decimal_places=3, default=0)
> and other fields.....
>
> admin.py
> class MeasurementForm(forms.ModelForm):
> def __init__(self, *args, **kwargs):
> super(MeasurementForm, self).__init__(*args, **kwargs)
> self.fields['width'].widget = MeasurementWidget
> self.fields['height'].widget = MeasurementWidget
> self.fields['length'].widget = MeasurementWidget
>
> class Meta:
> model = Inventory
>
> class InventoryAdmin(admin.ModelAdmin):
> list_display = ('id','location', 'room', 'category', 'description',
> 'condition', 'length', 'width', 'height', 'status', 'sale_price',
> 'selling_costs', 'debt')
> list_filter = ['category']
> search_fields = ['description']
> form = MeasurementForm
> inlines = [NoteInline, ImageInline, EstimateInline]
>
> admin.site.register(Inventory, InventoryAdmin)
>
> I am really lost here. Does anyone have an easier way to override the
> widgets on the admin form?
>
> Thanks,
>
> Mark
>
>
> On Thu, Apr 10, 2014 at 7:09 PM, Lucas Klassmann <[email protected]
> > wrote:
>
>> Hi!
>>
>> I never used this, but i found here and can be useful:
>>
>>
>> https://docs.djangoproject.com/en/dev/ref/forms/widgets/#django.forms.MultiWidget
>>
>> Cheers.
>>
>>
>> On Thu, Apr 10, 2014 at 10:56 PM, Mark Phillips <
>> [email protected]> wrote:
>>
>>> I hope I am using the right terminology....
>>>
>>> I have a Decimal field in a model called 'width'. In the admin screen, I
>>> would like to display this field as three text boxes like this:
>>>
>>> width: [] []/[]
>>>
>>> so I can enter 2 1/8 for the width, and then have the code convert that
>>> to 2.125 as a Decimal field and store that Decimal field in the database.
>>>
>>> How would I go about doing this?
>>>
>>> Thanks,
>>>
>>> Mark
>>>
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>>
>>
>>
>> --
>> Lucas Klassmann
>> Desenvolvedor de Software
>>
>> Email: [email protected]
>> Web site: http://www.lucasklassmann.com
>>
>> --
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>> .
>>
>> For more options, visit https://groups.google.com/d/optout.
>>
>
> --
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>
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>
--
Lucas Klassmann
Desenvolvedor de Software
Email: [email protected]
Web site: http://www.lucasklassmann.com
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