'OneToOneField' object has no attribute 'get' in function-based view

[Pedro Paulo Palazzo]

I am writing a two-part form where I want to pass the object saved in the first part as a OneToOneField for the object in the second part.

In views.py:

def object_entry(request):
    if request.method == 'POST':
        title_form = TitleEntry(request.POST)
        object_form = ObjectEntry(request.POST)
        if title_form.is_valid():
            title = title_form.cleaned_data['title']
            title_type = title_form.cleaned_data['title_type']
            title_lang = title_form.cleaned_data['lang']
            title_translation = title_form.cleaned_data['translation']
            title_currency = title_form.cleaned_data['currency']
            title_level = title_form.cleaned_data['level']
            title_note = title_form.cleaned_data['note']
            title_source = title_form.cleaned_data['source']
            new_title = title_form.save()
            return new_title

        else:
            return render_to_response('objectinfo/objectregister_form.html', {'object_form': object_form, 'title_form': title_form})

        if object_form.is_valid():
            object_form.preferred_title = new_title
            snapshot = object_form.cleaned_data['snapshot']
            work_type = object_form.cleaned_data['work_type']
            source = object_form.cleaned_data['source']
            brief_description = object_form.cleaned_data['brief_description']
            description_source = object_form.cleaned_data['description_source']
            comments = object_form.cleaned_data['comments']
            distinguishing_features = object_form.cleaned_data['distinguishing_features']
            new_object = object_form.save()
            reorg.AccessionNumber.generate(new_object.pk)

            return HttpResponseRedirect('/work/')
            # return HttpResponseRedirect(reverse(description_edit, args=(new_object.pk,)))

        else:
            return render_to_response('objectinfo/objectregister_form.html', {'object_form': object_form, 'title_form': title_form})

    else:
        title_form = TitleEntry()
        object_form = ObjectEntry()
        return render(request, 'objectinfo/objectregister_form.html', {'object_form': object_form, 'title_form': title_form})

And in forms.py:

class ObjectEntry(ModelForm):
    class Meta:
        model = ObjectRegister
        fields = ['snapshot', 'work_type', 'source', 'brief_description', 'description_source', 'comments', 'distinguishing_features', 'storage_unit', 'normal_unit']

 class TitleEntry(ModelForm):
    class Meta:
        model = ObjectName
        fields = ['title', 'title_type', 'lang', 'translation', 'currency', 'level', 'note', 'source']

When submitting the form it returns the error 'ObjectName' object has no attribute 'get'. What would be the correct way to pass new_title as the OneToOneField of object_form.preferred_title?

[Vijay Khemlani]

Can you post the whole stack trace of the error?

There are some things that don't make sense in the view function (for
example returning "new_title" from the view) but they are not related
to your initial error.

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[Pedro Paulo Palazzo]

Here is the traceback:

Environment:

Request Method: POST
Request URL: http://127.0.0.1:8000/work/add/

Django Version: 1.10.6
Python Version: 3.6.0
Installed Applications:
['django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'reversion',
 'historicdate.apps.HistoricdateConfig',
 'place.apps.PlaceConfig',
 'agent.apps.AgentConfig',
 'storageunit.apps.StorageunitConfig',
 'objectinfo.apps.ObjectinfoConfig',
 'reorg.apps.ReorgConfig']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware']

Traceback:

File "/path/to/venv/lib/python3.6/site-packages/django/core/handlers/exception.py" in inner
  42.             response = get_response(request)

File "/path/to/venv/lib/python3.6/site-packages/django/utils/deprecation.py" in __call__
  138.             response = self.process_response(request, response)

File "/path/to/venv/lib/python3.6/site-packages/django/middleware/clickjacking.py" in process_response
  32.         if response.get('X-Frame-Options') is not None:

Exception Type: AttributeError at /work/add/
Exception Value: 'ObjectName' object has no attribute 'get'

I ended up trying a different approach, splitting these forms into two separate views. I was able to pass the pk of the first (title) form to the second (register) through the URL and to prepopulate the latter's OneToOneField with the correct object. However, when I try to save this form, I get an ObjectDoesNotExist:

ObjectName matching query does not exist.

The traceback for this latter error follows:

Environment:


Request Method: POST
Request URL: http://127.0.0.1:8000/work/add/57/register/

Django Version: 1.10.6
Python Version: 3.6.0
Installed Applications:
['django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'reversion',
 'historicdate.apps.HistoricdateConfig',
 'place.apps.PlaceConfig',
 'agent.apps.AgentConfig',
 'storageunit.apps.StorageunitConfig',
 'objectinfo.apps.ObjectinfoConfig',
 'reorg.apps.ReorgConfig']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware']



Traceback:

File "/path/to/venv/lib/python3.6/site-packages/django/core/handlers/exception.py" in inner
  42.             response = get_response(request)

File "/path/to/venv/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response
  187.                 response = self.process_exception_by_middleware(e, request)

File "/path/to/venv/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response
  185.                 response = wrapped_callback(request, *callback_args, **callback_kwargs)

File "/path/to/project/objectinfo/views.py" in object_entry
  45.         object_form = ObjectEntry(request.POST, request.FILES)

File "/path/to/project/objectinfo/forms.py" in __init__
  9.         self.fields['preferred_title'].initial = ObjectName.objects.get(pk=objectname_id)

File "/path/to/venv/lib/python3.6/site-packages/django/db/models/manager.py" in manager_method
  85.                 return getattr(self.get_queryset(), name)(*args, **kwargs)

File "/path/to/venv/lib/python3.6/site-packages/django/db/models/query.py" in get
  385.                 self.model._meta.object_name

Exception Type: DoesNotExist at /work/add/57/register/
Exception Value: ObjectName matching query does not exist.

[Vijay Khemlani]

At least I can help with the original problem

Your view function should return an HttpResponse object, but inside
your view you have this

new_title = title_form.save()
return new_title

new_title is an instance of your ObjectName model, that's why Django
crashes when it tries to use it as an HttpResponse object and throws
that error.

I'm not quite sure what are you trying to accomplish in your view.

On 3/15/17, Pedro Paulo Palazzo <pedro....@gmail.com> wrote:
> Here is the traceback:
>
> Environment:

> Request Method: POSTRequest URL: http://127.0.0.1:8000/work/add/

> Exception Type: AttributeError at /work/add/Exception Value: 'ObjectName'

> object has no attribute 'get'
>
>
>
> I ended up trying a different approach, splitting these forms into two
> separate views. I was able to pass the pk of the first (title) form to the
> second (register) through the URL and to prepopulate the latter's
> OneToOneField with the correct object. However, when I try to save this
> form, I get an ObjectDoesNotExist:
>
> ObjectName matching query does not exist.
>
>
> The traceback for this latter error follows:
>
> Environment:Request Method: POSTRequest URL:
> http://127.0.0.1:8000/work/add/57/register/Django Version: 1.10.6Python

> Version: 3.6.0Installed Applications:['django.contrib.admin',

> 'django.contrib.auth', 'django.contrib.contenttypes',
> 'django.contrib.sessions', 'django.contrib.messages',
> 'django.contrib.staticfiles', 'reversion',
> 'historicdate.apps.HistoricdateConfig', 'place.apps.PlaceConfig',
> 'agent.apps.AgentConfig', 'storageunit.apps.StorageunitConfig',
> 'objectinfo.apps.ObjectinfoConfig', 'reorg.apps.ReorgConfig']Installed
> Middleware:['django.middleware.security.SecurityMiddleware',
> 'django.contrib.sessions.middleware.SessionMiddleware',
> 'django.middleware.common.CommonMiddleware',
> 'django.middleware.csrf.CsrfViewMiddleware',
> 'django.contrib.auth.middleware.AuthenticationMiddleware',
> 'django.contrib.messages.middleware.MessageMiddleware',
> 'django.middleware.clickjacking.XFrameOptionsMiddleware']Traceback:File
> "/path/to/venv/lib/python3.6/site-packages/django/core/handlers/exception.py"
> in inner 42. response = get_response(request)File

> "/path/to/venv/lib/python3.6/site-packages/django/core/handlers/base.py" in
> _get_response 187. response =
> self.process_exception_by_middleware(e, request)File
> "/path/to/venv/lib/python3.6/site-packages/django/core/handlers/base.py" in
> _get_response 185. response = wrapped_callback(request,
> *callback_args, **callback_kwargs)File
> "/path/to/project/objectinfo/views.py" in object_entry 45.
> object_form = ObjectEntry(request.POST, request.FILES)File
> "/path/to/project/objectinfo/forms.py" in __init__ 9.
> self.fields['preferred_title'].initial =
> ObjectName.objects.get(pk=objectname_id)File
> "/path/to/venv/lib/python3.6/site-packages/django/db/models/manager.py" in
> manager_method 85. return getattr(self.get_queryset(),
> name)(*args, **kwargs)File
> "/path/to/venv/lib/python3.6/site-packages/django/db/models/query.py" in get
> 385. self.model._meta.object_nameException Type:

> DoesNotExist at /work/add/57/register/Exception Value: ObjectName matching

> query does not exist.
>
>
>
>
> Em quarta-feira, 15 de março de 2017 17:21:43 UTC-3, Vijay Khemlani
> escreveu:
>>
>> Can you post the whole stack trace of the error?
>>
>> There are some things that don't make sense in the view function (for
>> example returning "new_title" from the view) but they are not related
>> to your initial error.
>>

>> On 3/15/17, Pedro Paulo Palazzo <pedro....@gmail.com <javascript:>>

>> > email to django-users...@googlegroups.com <javascript:>.

>> > To post to this group, send email to django...@googlegroups.com

>> <javascript:>.

>> > Visit this group at https://groups.google.com/group/django-users.
>> > To view this discussion on the web visit
>> >
>> https://groups.google.com/d/msgid/django-users/90eb2aa6-d802-4972-81ca-284b5bebe052%40googlegroups.com.
>>
>>
>> > For more options, visit https://groups.google.com/d/optout.
>> >
>>
>
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