this is the code:
def create(request, form_class=MapForm, template_name="maps/create.html"):
map_form = form_class(request.POST or None)
if map_form.is_valid():
map = map_form.save(commit=False)
and the map_form is :
class MapForm(forms.ModelForm):
slug = forms.SlugField(max_length=20,
help_text = _("a short version of the name consisting only of letters, numbers, underscores and hyphens."),
#error_message = _("This value must contain only letters, numbers, underscores and hyphens."))
)
def clean_slug(self):
if Map.objects.filter(slug__iexact=self.cleaned_data["slug"]).count() > 0:
raise forms.ValidationError(_("A Map already exists with that slug."))
return self.cleaned_data["slug"].lower()
def clean_name(self):
if Map.objects.filter(name__iexact=self.cleaned_data["name"]).count() > 0:
raise forms.ValidationError(_("A Map already exists with that name."))
return self.cleaned_data["name"]
class Meta:
model = Map
fields = ('name', 'slug', 'description')
