Re: Form validation and template errors - need n00b help

2010-07-14 Thread reduxdj 
Great,

Tom I looked a the django book carefully and did the following:

return render_to_response('listing.html', {'form':form,'error': True})

and works...

thanks for responding as well

On Jul 14, 7:37 am, Tom Evans  wrote:
> On Tue, Jul 13, 2010 at 4:06 PM, reduxdj  wrote:
> > HI,
>
> > Forgive me, here's another n00b doozie. I've created a form, which
> > extends form, however, my form is not validating and I can't get the
> > form to print errors next to my form fields. What's curious, at the
> > form.is_valid()
> > in all the examples, I don't see an else: clause. Which leads me to
> > believe that a validation error should be
> > raised at this point, so an else is not neccessary??
>
> > So, my form should hold clean_fieldname methods for each field name
> > correct? and if an error is raised,
> > automagically, django handles the error messages, as long as it's
> > defined in my template, correct or not?
> > So every property needs a clean method?
>
> > Sorry, I've read the resources and I'm a little unclear on this?
>
> > Thanks for your time,
> > Django and the community rocks
>
> > from my views:
>
> > def listing(request):
> >    if request.method == 'POST': # If the form has been submitted...
> >        new_listing = Listing()
> >        form = ListingForm(data=request.POST,instance=new_listing)
> >        #form.save()
> >        if form.is_valid(): # All validation rules pass
> >            form.save()
> >            return HttpResponseRedirect('/listing/') # Redirect after
> > POST
> >        #else:
> >            #return HttpResponseRedirect('/listing/') # Redirect after
> > POST
> >            #return HttpResponse('form is a failure, like you.')
> >            #return HttpResponseRedirect('/create/') # Redirect after
> > POST
> >    else:
> >        form = ListingForm() # An unbound form
> >        return render_to_response('listing.html', {
> >            'form': form,
> >        })
>
> Unindent the 'return render_to_response(...' lines, so that they are
> executed when you have an invalid form. The form will be re-rendered,
> except this time the form instance will be bound, and have appropriate
> error messages in it.
>
> eg:
>
> if request.method == 'POST':
>   form = ...
>   if form.is_valid():
>     ...
> else:
>   form = ...
> return render_to_response(...)
>
> Cheers
>
> Tom

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Re: Form validation and template errors - need n00b help

2010-07-14 Thread Tom Evans 
On Tue, Jul 13, 2010 at 4:06 PM, reduxdj  wrote:
> HI,
>
> Forgive me, here's another n00b doozie. I've created a form, which
> extends form, however, my form is not validating and I can't get the
> form to print errors next to my form fields. What's curious, at the
> form.is_valid()
> in all the examples, I don't see an else: clause. Which leads me to
> believe that a validation error should be
> raised at this point, so an else is not neccessary??
>
> So, my form should hold clean_fieldname methods for each field name
> correct? and if an error is raised,
> automagically, django handles the error messages, as long as it's
> defined in my template, correct or not?
> So every property needs a clean method?
>
> Sorry, I've read the resources and I'm a little unclear on this?
>
> Thanks for your time,
> Django and the community rocks
>
> from my views:
>
> def listing(request):
>    if request.method == 'POST': # If the form has been submitted...
>        new_listing = Listing()
>        form = ListingForm(data=request.POST,instance=new_listing)
>        #form.save()
>        if form.is_valid(): # All validation rules pass
>            form.save()
>            return HttpResponseRedirect('/listing/') # Redirect after
> POST
>        #else:
>            #return HttpResponseRedirect('/listing/') # Redirect after
> POST
>            #return HttpResponse('form is a failure, like you.')
>            #return HttpResponseRedirect('/create/') # Redirect after
> POST
>    else:
>        form = ListingForm() # An unbound form
>        return render_to_response('listing.html', {
>            'form': form,
>        })
>

Unindent the 'return render_to_response(...' lines, so that they are
executed when you have an invalid form. The form will be re-rendered,
except this time the form instance will be bound, and have appropriate
error messages in it.

eg:

if request.method == 'POST':
  form = ...
  if form.is_valid():
...
else:
  form = ...
return render_to_response(...)

Cheers

Tom

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Form validation and template errors - need n00b help

2010-07-13 Thread reduxdj 
HI,

Forgive me, here's another n00b doozie. I've created a form, which
extends form, however, my form is not validating and I can't get the
form to print errors next to my form fields. What's curious, at the
form.is_valid()
in all the examples, I don't see an else: clause. Which leads me to
believe that a validation error should be
raised at this point, so an else is not neccessary??

So, my form should hold clean_fieldname methods for each field name
correct? and if an error is raised,
automagically, django handles the error messages, as long as it's
defined in my template, correct or not?
So every property needs a clean method?

Sorry, I've read the resources and I'm a little unclear on this?

Thanks for your time,
Django and the community rocks

from my views:

def listing(request):
if request.method == 'POST': # If the form has been submitted...
new_listing = Listing()
form = ListingForm(data=request.POST,instance=new_listing)
#form.save()
if form.is_valid(): # All validation rules pass
form.save()
return HttpResponseRedirect('/listing/') # Redirect after
POST
#else:
#return HttpResponseRedirect('/listing/') # Redirect after
POST
#return HttpResponse('form is a failure, like you.')
#return HttpResponseRedirect('/create/') # Redirect after
POST
else:
form = ListingForm() # An unbound form
return render_to_response('listing.html', {
'form': form,
})


listing.html template

{% extends "base.html" %}
{% block content %}


   {% include "form_snippet.html" %}
   

{% endblock %}
so apparently that should work



form_snippet.html template

% for field in form %}
   
   {{ field.errors }}
   {{ field.label_tag }}: {{ field }}
   
{% endfor %}





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