Define css class in django Forms

Question

Assume I have a form

class SampleClass(forms.Form):
    name = forms.CharField(max_length=30)
    age = forms.IntegerField()
    django_hacker = forms.Boolea         


        

Answer 1

As it turns out you can do this in form constructor (init function) or after form class was initiated. This is sometimes required if you are not writing your own form and that form is coming from somewhere else -

def some_view(request):
    add_css_to_fields = ['list','of','fields']
    if request.method == 'POST':
        form = SomeForm(request.POST)
        if form.is_valid():
            return HttpResponseRedirect('/thanks/')
    else:
        form = SomeForm()

    for key in form.fields.keys():
        if key in add_css_to_fields:
            field = form.fields[key]
            css_addition = 'css_addition '
            css = field.widget.attrs.get('class', '')
            field.widget.attrs['class'] = css_addition + css_classes

    return render(request, 'template_name.html', {'form': form})