Re: form.save() fails silently - how to debug?

Thank you for the suggestion, but unfortunately that too does not work. 

I really need to find a way to get at the source of the problem; I would think an error message should be generated but none shows up...

On Thursday, July 26, 2012 9:47:00 AM UTC+2, Karl Sutt wrote:

I think

results = formset.save(commit=False)
formset.save()

should be

results = formset.save(commit=False)
results.save() 

Tervitades/Regards

Karl Sutt

On Thu, Jul 26, 2012 at 10:35 AM, Derek  wrote:

I'd appreciate some help with the following problem, under Django 1.4

When running with the models, forms and view as described below, the data from the form is *not* saved into the model.

However, when using the test code (shown at the end) in a shell environment, the data *is* saved as expected.

How can I tell why the form data is not saved in the view?  It appears to "fail silently" (i.e. no errors reported) - but adding print statements into the code reveal that the correct data is available just before the .save() function.  Is there a preferred approach for debugging this type of situation?

Thanks

Derek

# models

class ClientFile(Model):

    id = AutoField(primary_key=True)

    description = CharField(unique=True, max_length=255)

    file = FileField(upload_to='client', storage=CLIENT_STORAGE)

class ClientData(Model):

    id = AutoField(primary_key=True)

    clientfile = ForeignKey(ClientFile)

    #http://code.google.com/p/django-geo/source/browse/trunk/fields.py?r=13#49

    data_set = DictionaryField(blank=True, null=True)

# forms

class ClientDataForm(ModelForm):

    class Meta:

        abstract = True

        model = ClientData

        widgets = {

            'data_set': HiddenInput(),

            'clientfile': HiddenInput()

        }

class ClientDataFormLayout(ClientDataForm):

    label = CharField(max_length=255)

    top_left = CharField(max_length=255)

    bottom_right = CharField(max_length=255)

    def __init__(self, *args, **kwargs):

        super(ClientDataForm, self).__init__(*args, **kwargs)

    class Meta(ClientDataForm.Meta):

        pass

    def clean(self):

        cleaned = self.cleaned_data

        # copy for alteration

        cleaned_data = copy.deepcopy(self.cleaned_data)

        del cleaned_data['data_set']

        del cleaned_data['clientfile']

        cleaned['data_set'] = cleaned_data

        return cleaned

# view

    client_dataform_layout = ClientDataFormLayout()

    client = get_object_or_404(ClientFile, pk=1)

    initial = {'clientfile': client}

    if request.method == 'POST':

        formset = client_dataform_layout(request.POST, instance=client)

        if formset.is_valid():

            results = formset.save(commit=False)

            form_data = formset.cleaned_data  #  test only

            formset.save()

    else:

        formset = client_dataform_layout(instance=client, initial=initial)

    return render_to_response("clients/client_data.html",

                              locals(),

                              RequestContext(request))

# test code

formset = ClientDataFormLayout(data {'clientfile': 1, 'data_set': '',

                                     'top_left': 'AA', 'bottom_right': 'ZZ',

                                     'label': 'foobar'})

print formset.is_valid()

results = formset.save(commit=False)

formset.save()

cd = ClientData.objects.get(clientfile__pk=1)

print cd.data_set

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