winget.pro/winget/admin.py

from django.contrib import admin
from django.contrib.admin import RelatedOnlyFieldListFilter
from django.core.exceptions import ValidationError
from django.forms import ModelForm
from tenants.model_admin import TenantModelAdmin, TenantStackedInline
from winget.models import Package, Version, Installer

class PackageAdmin(TenantModelAdmin):
    list_display = ('name', 'publisher', 'identifier')
    list_filter = ('publisher',)

class InstallerForm(ModelForm):

    class Meta:
        model = Installer
        fields = '__all__'

    def clean(self):
        data = super().clean()
        errors = Installer.validate(data)
        if errors:
            raise ValidationError(errors)
        return data

class InstallerInline(TenantStackedInline):

    model = Installer
    form = InstallerForm
    readonly_fields = ('sha256',)

    fieldsets = [
        (None, {
            'fields': ['architecture', 'scope', 'type', 'file']
        }),
        ('Installer switches', {
            'fields': [
                'silent_switch', 'silent_progress_switch', 'interactive_switch',
                'install_location_switch', 'log_switch', 'upgrade_switch',
                'custom_switch'
            ],
            'classes': ['collapse']
        }),
        ('Options for zip installers', {
            'fields': ['nested_installer', 'nested_installer_type'],
            'classes': ['collapse']
        })
    ]

    def get_extra(self, request, obj: Version = None, **kwargs):
        # Show one empty Installer form when the version does not yet have an
        # associated installer. Otherwise, don't add another Installer form.
        if obj and obj.installer_set.exists():
            return 0
        return 1

class VersionAdmin(TenantModelAdmin):
    inlines = (InstallerInline,)
    list_display = ('created', 'modified', 'package', 'version')
    list_display_links = ('created', 'modified', 'version', 'package')
    list_filter = (('package', RelatedOnlyFieldListFilter),)

admin.site.register(Package, PackageAdmin)
admin.site.register(Version, VersionAdmin)