Accept the option picked in selects of translatable records

Saving a page with a category failed with "El campo categoría no está
en la lista de valores permitidos" — for every category, not only the
one being tried. Filament builds such a list through a query, which
handles `->relationship('category', 'name->es')`, but validates a choice
by reading the title back off the record as a property,
`$record->{'name->es'}`, which does not exist. No label, so every
option was refused.

The same pattern was in seven more places: a call's, a testimonial's,
a talk's and a repository's project, a testimonial's service, and the
page and application filters. TranslatedOptionLabel gives Filament the
record's own translation instead, in the language of whoever uses the
panel; the JSON path stays for search and ordering.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

app/Filament/Resources/Applications/Tables/ApplicationsTable.php

@@ -6,6 +6,7 @@ namespace App\Filament\Resources\Applications\Tables;
 
 use App\Enums\ApplicationKind;
 use App\Enums\ApplicationStatus;
+use App\Filament\Support\TranslatedOptionLabel;
 use App\Models\Application;
 use Filament\Actions\Action;
 use Filament\Actions\ActionGroup;
@@ -93,6 +94,7 @@ class ApplicationsTable
                 SelectFilter::make('call')
                     ->label(__('panel.applications.fields.call'))
                     ->relationship('call', 'title->'.config('locales.default'))
+                    ->getOptionLabelFromRecordUsing(TranslatedOptionLabel::using('title'))
                     ->searchable()
                     ->preload(),
 

app/Filament/Resources/Calls/CallResource.php

@@ -12,6 +12,7 @@ use App\Filament\Resources\Calls\Pages\ListCalls;
 use App\Filament\Resources\Calls\RelationManagers\ApplicationsRelationManager;
 use App\Filament\Support\PreviewAction;
 use App\Filament\Support\TranslatableTabs;
+use App\Filament\Support\TranslatedOptionLabel;
 use App\Models\Call;
 use App\Rules\UniqueTranslatedSlug;
 use BackedEnum;
@@ -141,6 +142,7 @@ class CallResource extends Resource
                     Select::make('project_id')
                         ->label(__('panel.calls.fields.project'))
                         ->relationship('project', 'title->'.config('locales.default'))
+                        ->getOptionLabelFromRecordUsing(TranslatedOptionLabel::using('title'))
                         ->searchable()
                         ->preload()
                         ->helperText(__('panel.calls.fields.project_hint')),

app/Filament/Resources/Pages/Schemas/PageForm.php

@@ -7,6 +7,7 @@ namespace App\Filament\Resources\Pages\Schemas;
 use App\Enums\PageStatus;
 use App\Filament\Resources\Pages\PageResource;
 use App\Filament\Support\TranslatableTabs;
+use App\Filament\Support\TranslatedOptionLabel;
 use App\Models\Page;
 use App\Rules\UniqueTranslatedSlug;
 use App\Support\DuplicateTitles;
@@ -112,6 +113,7 @@ class PageForm
                     Select::make('category_id')
                         ->label(__('panel.pages.fields.category'))
                         ->relationship('category', 'name->'.config('locales.default'))
+                        ->getOptionLabelFromRecordUsing(TranslatedOptionLabel::using('name'))
                         ->searchable()
                         ->preload(),
 

app/Filament/Resources/Pages/Tables/PagesTable.php

@@ -8,6 +8,7 @@ use App\Enums\PageStatus;
 use App\Filament\Support\PreviewAction;
 use App\Filament\Support\ReviewActions;
 use App\Filament\Support\ReviewStatusColumn;
+use App\Filament\Support\TranslatedOptionLabel;
 use App\Filament\Support\TranslationStatusColumn;
 use App\Filament\Support\ViewsColumn;
 use App\Models\Page;
@@ -127,6 +128,7 @@ class PagesTable
                 SelectFilter::make('category')
                     ->label(__('panel.pages.fields.category'))
                     ->relationship('category', 'name->'.config('locales.default'))
+                    ->getOptionLabelFromRecordUsing(TranslatedOptionLabel::using('name'))
                     ->searchable()
                     ->preload(),
 

app/Filament/Resources/Repositories/RepositoryResource.php

@@ -9,6 +9,7 @@ use App\Filament\Resources\Repositories\Pages\CreateRepository;
 use App\Filament\Resources\Repositories\Pages\EditRepository;
 use App\Filament\Resources\Repositories\Pages\ListRepositories;
 use App\Filament\Resources\Repositories\Tables\RepositoriesTable;
+use App\Filament\Support\TranslatedOptionLabel;
 use App\Models\Repository;
 use BackedEnum;
 use Filament\Forms\Components\Select;
@@ -81,6 +82,7 @@ class RepositoryResource extends Resource
                     Select::make('project_id')
                         ->label(__('panel.repositories.fields.project'))
                         ->relationship('project', 'title->'.config('locales.default'))
+                        ->getOptionLabelFromRecordUsing(TranslatedOptionLabel::using('title'))
                         ->searchable()
                         ->preload(),
 

app/Filament/Resources/Talks/TalkResource.php

@@ -9,6 +9,7 @@ use App\Filament\Resources\Talks\Pages\CreateTalk;
 use App\Filament\Resources\Talks\Pages\EditTalk;
 use App\Filament\Resources\Talks\Pages\ListTalks;
 use App\Filament\Support\TranslatableTabs;
+use App\Filament\Support\TranslatedOptionLabel;
 use App\Models\Talk;
 use BackedEnum;
 use Filament\Actions\BulkActionGroup;
@@ -126,6 +127,7 @@ class TalkResource extends Resource
                     Select::make('project_id')
                         ->label(__('panel.talks.fields.project'))
                         ->relationship('project', 'title->'.config('locales.default'))
+                        ->getOptionLabelFromRecordUsing(TranslatedOptionLabel::using('title'))
                         ->searchable()
                         ->preload(),
 

app/Filament/Resources/Testimonials/TestimonialResource.php

@@ -9,6 +9,7 @@ use App\Filament\Resources\Testimonials\Pages\CreateTestimonial;
 use App\Filament\Resources\Testimonials\Pages\EditTestimonial;
 use App\Filament\Resources\Testimonials\Pages\ListTestimonials;
 use App\Filament\Support\TranslatableTabs;
+use App\Filament\Support\TranslatedOptionLabel;
 use App\Models\Testimonial;
 use BackedEnum;
 use Filament\Actions\BulkActionGroup;
@@ -137,12 +138,14 @@ class TestimonialResource extends Resource
                     Select::make('project_id')
                         ->label(__('panel.testimonials.fields.project'))
                         ->relationship('project', 'title->'.config('locales.default'))
+                        ->getOptionLabelFromRecordUsing(TranslatedOptionLabel::using('title'))
                         ->searchable()
                         ->preload(),
 
                     Select::make('service_id')
                         ->label(__('panel.testimonials.fields.service'))
                         ->relationship('service', 'title->'.config('locales.default'))
+                        ->getOptionLabelFromRecordUsing(TranslatedOptionLabel::using('title'))
                         ->searchable()
                         ->preload(),
 

app/Filament/Support/TranslatedOptionLabel.php

@@ -0,0 +1,29 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Filament\Support;
+
+use Closure;
+use Illuminate\Database\Eloquent\Model;
+
+/**
+ * The label of a relationship option whose title is translatable.
+ *
+ * `->relationship('category', 'name->es')` builds the list fine — that path
+ * goes through a query — but to validate a choice Filament reads the title
+ * back off the record as a property, `$record->{'name->es'}`, which does not
+ * exist. Every choice then came back without a label and was refused as "not
+ * in the list of allowed values", whichever one it was. Given this, Filament
+ * asks the record instead, in the language of whoever is using the panel.
+ *
+ * The JSON path stays in `relationship()`: it is still what the search box
+ * queries and the list is ordered by.
+ */
+final class TranslatedOptionLabel
+{
+    public static function using(string $attribute): Closure
+    {
+        return fn (Model $record): ?string => $record->getTranslation($attribute, app()->getLocale());
+    }
+}