try this get_form:
def get_form(self, request, obj=None, **kwargs):
if obj.readiness:
self.exclude = ("readinessDescription", )
return super(RequestForChangeAdmin, self).get_form(request, obj, **kwargs)
I have never used 'exclude' but it looks like yours should work.
On Fri, May 30, 2014 at 9:18 AM, Hilde Rafaelsen <[email protected]>
wrote:
> Thanx,
>
> I now changed my if test to just if obj.readines but then I get the error
> message 'NoneType' object has no attribute 'readiness'
>
>
> I have tried with several fields from my model, but I always get this
> error. I guess it must be something essential I am doing wrong here, since
> my obj seems to be none always...
>
> I have get_form inside my modelAdmin class.
>
>
> On Friday, May 30, 2014 2:06:59 PM UTC+2, Timothy W. Cook wrote:
>
>> What do you mean by tri-state?
>>
>> You are using a field that allows three states: TRUE, FALSE and NULL.
>>
>> If I understand the model, readiness would either be TRUE or FALSE. But
>> if you do not want to change your field type to:
>> readiness = models.BooleanField("Readiness", blank=True)
>>
>> then try changing:
>> if obj.readiness == True:
>>
>> to:
>>
>> if obj.readiness and obj.readiness == True:
>>
>> or just:
>> if obj.readiness:
>>
>> Will give you the same result.
>>
>> This way if it doesn't exist it will not fail on the '== TRUE' test.
>>
>>
>>
>> On Fri, May 30, 2014 at 8:49 AM, Hilde Rafaelsen <[email protected]>
>> wrote:
>>
>>> Hi,
>>>
>>>
>>>
>>> Thanks for the response.
>>>
>>>
>>>
>>> What do you mean by tri-state?
>>>
>>>
>>>
>>> I changed my get_form to this:
>>>
>>> def get_form(self, request, obj=None, **kwargs):
>>>
>>> form = super(RequestForChangeAdmin,
>>> self).get_form(request, obj, **kwargs)
>>>
>>> if obj:
>>>
>>> if obj.readiness == True:
>>>
>>>
>>> self.exclude = ("readinessDescription", )
>>>
>>> form =
>>> super(RequestForChangeAdmin, self).get_form(request, obj, **kwargs)
>>>
>>> return form
>>>
>>>
>>>
>>> No my code run without errors, but nothing happpends though ☺
>>>
>>>
>>>
>>> I have tried to change the readiness filds to yes and no, but the field
>>> readiness descriptions is always displayed. Maybe it is not possibly to get
>>> a fields attribute value from admin before the admin form is posted or
>>> stored in database? Do you know?
>>>
>>>
>>>
>>> Regards,
>>>
>>> Hilde from Norway
>>>
>>> On Friday, May 30, 2014 12:57:19 PM UTC+2, Hilde Rafaelsen wrote:
>>>>
>>>> Hello,
>>>>
>>>> In my django admin page I want to hide some filelds from users if a
>>>> special field value is set. I have tried different solutions to solve my
>>>> problem but is stucked and hope someone can help me,
>>>>
>>>> If you look at my model I want to hide the field readinessDescription
>>>> if readiness value is False (no), when the user log into admin page.
>>>>
>>>> In model.py:
>>>> class RequestForChange (models.Model):
>>>> rfc = models.AutoField (primary_key=True, help_text="This is the grey
>>>> text")
>>>> heading = models.CharField("Heading", max_length=50)
>>>> readiness = models.NullBooleanField("Readiness", blank=True,
>>>> null=True)
>>>> readinessDescription = models.TextField("Description of
>>>> readiness", max_length=250, blank=True, null=True)
>>>>
>>>>
>>>> I found some hints on the web about using get_form from my
>>>> RequestForChangeAdmin page, but it won't work because i get this error
>>>> 'NoneType' object has no attribute 'readiness'
>>>>
>>>>
>>>> Here is what I have in admin.py:
>>>>
>>>> class RequestForChangeAdmin(admin.ModelAdmin):
>>>> formfield_overrides = {
>>>> models.ManyToManyField: {'widget': CheckboxSelectMultiple},
>>>> }
>>>> list_display = ('rfc', 'heading', 'enviroment', 'status')
>>>> search_fields = ('changeId',)
>>>> list_filter = ('enviroment', 'acceptAT', 'status')
>>>> date_hierarchy = 'criticalDate'
>>>> inline = [RequestForChangeInline]
>>>> def get_form(self, request, obj=None, **kwargs):
>>>> form = super(RequestForChangeAdmin, self).get_form(request, obj,
>>>> **kwargs)
>>>> print obj
>>>> if obj.readiness == True:
>>>> self.exclude = ("readinessDescription", )
>>>> form = super(RequestForChangeAdmin, self).get_form(request, obj,
>>>> **kwargs)
>>>> return form
>>>>
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>>
>>
>>
>> --
>>
>> ============================================
>> Timothy Cook
>> LinkedIn Profile:http://www.linkedin.com/in/timothywaynecook
>> MLHIM http://www.mlhim.org
>>
>> --
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--
============================================
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LinkedIn Profile:http://www.linkedin.com/in/timothywaynecook
MLHIM http://www.mlhim.org
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