Man, are you good....;)
It now works as expected!
One last question....the form shows three text boxes next to each other.
How can I change the html to look like this:
[ ] [ ] / [ ]
{text_box} space {text_box} / {text_box}
It has something to do with format_output, but I don't understand how to
return a string to represent this layout. Also, how to control the size of
the text boxes.
Thanks again!!
Mark
On Fri, Apr 11, 2014 at 8:05 AM, Lucas Klassmann
<[email protected]>wrote:
> Hi Mark,
>
> Because *TextInput *is a classe inside *forms *module and python is
> *case-sensitive*, try this:
>
> * forms.TextInput(attrs=attrs)*
>
> Cheers.
>
>
> On Fri, Apr 11, 2014 at 11:59 AM, Mark Phillips <
> [email protected]> wrote:
>
>> Lucas,
>>
>> Thanks for your comment.
>>
>> I tried your suggestion, and got this error
>>
>> 'module' object has no attribute 'textInput'
>>
>> referring to the forms.textInput(attrs=attrs) in the widget class.
>>
>> I am only trying to replace three out of 16 fields in my Inventory model
>> with the custom widgets. I think your solution would require me to
>> enumerate all the other fields as well? I found this on the Internet -
>> http://collingrady.wordpress.com/2008/07/24/useful-form-tricks-in-django/,
>> which gave me the idea for how I wrote the form.
>>
>> I could be totally off base, so this is a great learning experience for
>> me! Thanks for your help!
>>
>> Mark
>>
>>
>> On Fri, Apr 11, 2014 at 7:37 AM, Lucas Klassmann <
>> [email protected]> wrote:
>>
>>> 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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>>>>>> .
>>>>>> For more options, visit https://groups.google.com/d/optout.
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> 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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>>>> For more options, visit https://groups.google.com/d/optout.
>>>>
>>>
>>>
>>>
>>> --
>>> 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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>> .
>>
>> For more options, visit https://groups.google.com/d/optout.
>>
>
>
>
> --
> Lucas Klassmann
> Desenvolvedor de Software
>
> Email: [email protected]
> Web site: http://www.lucasklassmann.com
>
> --
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>
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>
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