Add preference for required fields of address model in account registration wizard

aleksis/core/frontend/components/account/AccountRegistrationForm.vue

@@ -574,7 +574,9 @@ export default {
       }
     },
     isFieldRequired(fieldName) {
-      return this?.systemProperties?.sitePreferences?.signupRequiredFields.includes(
+      return this?.systemProperties?.sitePreferences?.signupRequiredFields?.includes(
+        fieldName,
+      ) || this?.systemProperties?.sitePreferences?.signupAddressRequiredFields?.includes(
         fieldName,
       );
     },

aleksis/core/frontend/components/account/helpers.graphql

@@ -2,6 +2,7 @@ query gqlRequiredFieldsPreference {
   systemProperties {
     sitePreferences {
       signupRequiredFields
+      signupAddressRequiredFields
     }
   }
 }

aleksis/core/preferences.py

@@ -18,7 +18,7 @@ from dynamic_preferences.types import (
 from oauth2_provider.models import AbstractApplication
 
 from .mixins import CalendarEventMixin, PublicFilePreferenceMixin
-from .models import Group, Person, Role
+from .models import Address, Group, Person, Role
 from .registries import person_preferences_registry, site_preferences_registry
 from .util.notifications import get_notification_choices_lazy
 
@@ -324,6 +324,26 @@ class SignupRequiredFields(MultipleChoicePreference):
     required = False
 
 
+@site_preferences_registry.register
+class SignupAddressRequiredFields(MultipleChoicePreference):
+    """Fields on address model which are required when signing up."""
+
+    section = auth
+    name = "signup_address_required_fields"
+    default = []
+    widget = SelectMultiple
+    verbose_name = _(
+        "Fields on address model which are required when signing up."
+    )
+    field_attribute = {"initial": []}
+    choices = [
+        (field.name, field.name)
+        for field in Address.syncable_fields()
+        if getattr(field, "blank", False)
+    ]
+    required = False
+
+
 @site_preferences_registry.register
 class AllowedUsernameRegex(StringPreference):
     section = auth

aleksis/core/schema/site_preferences.py

@@ -26,6 +26,7 @@ class SitePreferencesType(graphene.ObjectType):
     invite_enabled = graphene.Boolean()
     signup_enabled = graphene.Boolean()
     signup_required_fields = graphene.List(graphene.String)
+    signup_address_required_fields = graphene.List(graphene.String)
 
     auth_allowed_username_regex = graphene.String()
     auth_disallowed_uids = graphene.List(graphene.String)
@@ -80,3 +81,6 @@ class SitePreferencesType(graphene.ObjectType):
 
     def resolve_signup_required_fields(parent, info, **kwargs):
         return parent["auth__signup_required_fields"]
+
+    def resolve_signup_address_required_fields(parent, info, **kwargs):
+        return parent["auth__signup_address_required_fields"]