class SignUpForm(forms.ModelForm):
    class Meta:
        model = SignUp
        fields = ['full_name', 'email']
        ### exclude = ['full_name'] 
    def clean_email(self):
        email = self.cleaned_data.get('email')
        email_base, provider = email.split("@")
        domain, extension = provider.split('.')
        # if not domain == 'USC':
        #   raise forms.ValidationError("Please make sure you use your USC email.")
        if not extension == "edu":
            raise forms.ValidationError("Please use a valid .EDU email address")
        return email
    def clean_full_name(self):
        full_name = self.cleaned_data.get('full_name')
        #write validation code.
        return full_name