Re: ModelForm: exclude fields missing in request

Malcolm, thanks for taking the time to clarify the concept for me. I can see now that Django's approach is valid if one takes a form as a specification of what "has to be there" (hence the exclude mechanism in ModelForms) and not, as I did, of what "could be submitted". I still have a vague

Re: ModelForm: exclude fields missing in request

On Fri, 2009-01-09 at 00:59 -0800, Flo Ledermann wrote: > Malcolm, > > As a relatively new Django user but experienced web developer I just > found it counter-intuitive that the Form would set fields that are > nowhere specified or even mentioned in the request. To follow your > line of thought,

Re: ModelForm: exclude fields missing in request

On Fri, Jan 9, 2009 at 9:59 AM, Flo Ledermann wrote: >> No. Don't ask the form class to read your mind. Create a form that knows >> which fields it expects so that errors can be raised correctly and >> validation will occur normally. > > I am not asking the form class

Re: ModelForm: exclude fields missing in request

Malcolm, As a relatively new Django user but experienced web developer I just found it counter-intuitive that the Form would set fields that are nowhere specified or even mentioned in the request. To follow your line of thought, a validation error should be raised if a required field is not

Re: ModelForm: exclude fields missing in request

Karen, On Jan 9, 12:40 am, "Karen Tracey" wrote: > Is there some reason you are not simply using exclude in Meta for the form > to avoid having these fields present in the form at all: this would require me to create ModelForm classes for all subsets of the form I want to

Re: ModelForm: exclude fields missing in request

On Thu, 2009-01-08 at 07:08 -0800, Flo Ledermann wrote: > Hi all, > > I am trying to use a ModelForm in a "sparse" way to edit instances, > i.e. I only render one of its fields (plus a submit button) in the > template for editing the corresponding field in the model. I would > have expected that

Re: ModelForm: exclude fields missing in request

On Thu, Jan 8, 2009 at 11:34 AM, Flo Ledermann wrote: > > Hi all, > > after some more thinking, the workaround I came up with is now: > > if form.is_valid(): >for key in form.cleaned_data.keys(): >if not key in request.POST: del form.cleaned_data[key] >

Re: ModelForm: exclude fields missing in request

Hi all, after some more thinking, the workaround I came up with is now: if form.is_valid(): for key in form.cleaned_data.keys(): if not key in request.POST: del form.cleaned_data[key] form.save() This removes all values that are not found in the original request from the form

ModelForm: exclude fields missing in request

Hi all, I am trying to use a ModelForm in a "sparse" way to edit instances, i.e. I only render one of its fields (plus a submit button) in the template for editing the corresponding field in the model. I would have expected that fields not present in the POST data of the request would be omitted