Adding css class to field on validation error in django
What about defining error_css_class?http://docs.djangoproject.com/en/dev/ref/forms/api/#styling-required-or-erroneous-form-rows?
class MyForm(ModelForm): error_css_class = 'error'
To answer the original question.
You can add the desired class to the field in the view to where you are submitting your form and doing your form.is_valid() check. Not the prettiest but it will work.
def submit_form(request): if request.method = 'POST': if. form.is_valid(): # Do something with clean form data pass else: # Append css class to every field that contains errors. for field in form.errors: form[field].field.widget.attrs['class'] += ' my-css-class' return render(request, submit_form.html, { 'form': form })
Expanding upon errx's answer.
Add the CSS
.error input, .error select { border: 2px red solid;}to specifically highlight the field