WYGIWYH/app/apps/currencies/forms.py

from crispy_forms.bootstrap import FormActions
from crispy_forms.helper import FormHelper
from crispy_forms.layout import Layout
from django import forms
from django.forms import CharField
from django.utils.translation import gettext_lazy as _

from apps.common.widgets.crispy.submit import NoClassSubmit
from apps.currencies.models import Currency


class CurrencyForm(forms.ModelForm):
    prefix = CharField(strip=False, required=False, label=_("Prefix"))
    suffix = CharField(strip=False, required=False, label=_("Suffix"))

    class Meta:
        model = Currency
        fields = ["name", "decimal_places", "prefix", "suffix", "code"]

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)

        self.helper = FormHelper()
        self.helper.form_tag = False
        self.helper.form_method = "post"
        self.helper.layout = Layout(
            "code", "name", "decimal_places", "prefix", "suffix"
        )

        if self.instance and self.instance.pk:
            self.helper.layout.append(
                FormActions(
                    NoClassSubmit(
                        "submit", _("Update"), css_class="btn btn-outline-primary w-100"
                    ),
                ),
            )
        else:
            self.helper.layout.append(
                FormActions(
                    NoClassSubmit(
                        "submit", _("Add"), css_class="btn btn-outline-primary w-100"
                    ),
                ),
            )