Misago/misago/acl/forms.py

from django import forms
from django.utils.translation import gettext_lazy as _

from .models import Role
from .providers import providers


class RoleForm(forms.ModelForm):
    name = forms.CharField(label=_("Role name"))

    class Meta:
        model = Role
        fields = ["name"]


def get_permissions_forms(role, data=None):
    """utility function for building forms in admin"""
    role_permissions = role.permissions

    perms_forms = []
    for extension, module in providers.list():
        try:
            module.change_permissions_form
        except AttributeError:
            message = "'%s' object has no attribute '%s'"
            raise AttributeError(message % (extension, "change_permissions_form"))

        FormType = module.change_permissions_form(role)

        if FormType:
            if data:
                perms_forms.append(FormType(data, prefix=extension))
            else:
                perms_forms.append(
                    FormType(initial=role_permissions.get(extension), prefix=extension)
                )

    return perms_forms