Django ModelForm to have a hidden input

So I have my TagStatus model. I'm trying to make a ModelForm for it. However, my form requires that the hidden input be populated with the {{ tag.name }}. I've been looking through the docs and I don't know how to make the tag field a hidden input. Perhaps a ModelForm isn't the way to go?

models.py:

class TagStatus(models.Model):
user = models.ForeignKey(User, null=True, unique=True)
status = models.CharField(max_length=2, choices=tag_statuses)
tag = models.ForeignKey(Tag, null=True, blank=True)


def __unicode__(self):
return self.status


def save(self, *args, **kwargs):
super(TagStatus, self).save(*args, **kwargs)


class TagStatusForm(modelForm):
class Meta:
model = TagStatus
fields = ('status','tag')
widgets = {
'select': Select,
'tag': ???
}

django views.py:

@login_required
def tags(request):
all_tags = Tag.objects.all()
context = base_context(request)
if request.method == 'POST':
if 'status_check' in request.POST:
status_form = TagStatusForm(request.POST)
#if request.is_ajax():
if status_form.is_valid():
status_form.save()
response = simplejson.dumps({"status": "Successfully changed status"})
else:
response = simplejson.dumps({"status": "Error"})
return HttpResponse (response, mimetype='application/json')
status_form = TagStatusForm()
context['status_form'] = status_form
context['all_tags'] = all_tags
return render_to_response('tags/tags.html', context, context_instance=RequestContext(request))

template:

{% for tag in all_tags %}
....
<form class="nice" id="status-form" method="POST" action="">
{% csrf_token %}
<input type="hidden" name="status_check" />
<input type='hidden' name="tag" value="{{ tag.name }}" />
{{ status_form.status }}
</form>
...
{% endfor %}

How would I go about making a hidden input through a django ModelForm and then populate it through the template?

99222

小开

There are 3 possible ways (AFAIK) to render hidden fields in Django -

1. You could declare a field normally in forms.py but in your templates html file use \{\{ form.field.as_hidden }}

2. in forms.py directly use hidden input widget.

class MyForm(forms.Form):
hidden_field = forms.CharField(widget=forms.HiddenInput())

Once you make the field a hidden input, you could populate the value of the field in templates. Now your hidden field is ready for rendering.

3. Regular form equivalent (thanks to @Modelesq for sharing this nugget). Here no Django is involved. Changes are done at HTML template level. <input type="hidden" name="tag" value="\{\{ tag.name }}" />

小开

最佳答案

To make a field in a ModelField a hidden field, use a HiddenInput widget. The ModelForm uses a sensible default widget for all the fields, you just need to override it when the object is constructed.

class TagStatusForm(forms.ModelForm):
class Meta:
model = TagStatus
widgets = {'tag': forms.HiddenInput()}

小开

I was looking for a way to HIDE ALL INPUTS :

class TagStatusForm(forms.ModelForm):
class Meta:
model = TagStatus


def __init__(self, *args, **kwargs):
super(TagStatusForm, self).__init__(*args, **kwargs)
for field in self.fields:
self.fields[field].widget = forms.HiddenInput()

小开

I posted a way to do it with generic class-based views here:

from django.forms import HiddenInput


from django.forms.models import modelform_factory


_patient_create_form = modelform_factory(
models.Patient,
fields=['name', 'caregiver_name', 'sex', 'birth_date',
'residence', 'country'],
widgets={'country': HiddenInput()})


class PatientCreate(LoginRequiredMixin, UserOrgRequiredMixin, CreateView):
form_class = _patient_create_form
template_name = 'healthdbapp/patient_form.html'