initial

app/Filament/Resources/TravelRequests/Pages/CreateTravelRequest.php

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+<?php
+
+namespace App\Filament\Resources\TravelRequests\Pages;
+
+use App\Filament\Resources\TravelRequests\TravelRequestResource;
+use Filament\Resources\Pages\CreateRecord;
+
+class CreateTravelRequest extends CreateRecord
+{
+    protected static string $resource = TravelRequestResource::class;
+}

app/Filament/Resources/TravelRequests/Pages/EditTravelRequest.php

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+<?php
+
+namespace App\Filament\Resources\TravelRequests\Pages;
+
+use App\Filament\Resources\TravelRequests\TravelRequestResource;
+use Filament\Actions\DeleteAction;
+use Filament\Resources\Pages\EditRecord;
+
+class EditTravelRequest extends EditRecord
+{
+    protected static string $resource = TravelRequestResource::class;
+
+    protected function getHeaderActions(): array
+    {
+        return [
+            DeleteAction::make(),
+        ];
+    }
+}

app/Filament/Resources/TravelRequests/Pages/ListTravelRequests.php

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+<?php
+
+namespace App\Filament\Resources\TravelRequests\Pages;
+
+use App\Filament\Resources\TravelRequests\TravelRequestResource;
+use Filament\Actions\CreateAction;
+use Filament\Resources\Pages\ListRecords;
+
+class ListTravelRequests extends ListRecords
+{
+    protected static string $resource = TravelRequestResource::class;
+
+    protected function getHeaderActions(): array
+    {
+        return [
+            CreateAction::make(),
+        ];
+    }
+}

app/Filament/Resources/TravelRequests/Schemas/TravelRequestForm.php

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+<?php
+
+namespace App\Filament\Resources\TravelRequests\Schemas;
+
+use Filament\Schemas\Schema;
+
+class TravelRequestForm
+{
+    public static function configure(Schema $schema): Schema
+    {
+        return $schema
+            ->components([
+                //
+            ]);
+    }
+}

app/Filament/Resources/TravelRequests/Tables/TravelRequestsTable.php

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+<?php
+
+namespace App\Filament\Resources\TravelRequests\Tables;
+
+use App\Enums\TravelStatus;
+use Filament\Actions\BulkActionGroup;
+use Filament\Actions\DeleteBulkAction;
+use Filament\Actions\EditAction;
+use Filament\Tables\Columns\BadgeColumn;
+use Filament\Tables\Columns\TextColumn;
+use Filament\Tables\Filters\SelectFilter;
+use Filament\Tables\Table;
+
+class TravelRequestsTable
+{
+    public static function configure(Table $table): Table
+    {
+        return $table
+            ->columns([
+                TextColumn::make('id')->sortable(),
+                TextColumn::make('user.name')->label('Applicant')->searchable()->sortable(),
+                TextColumn::make('reason_summary')->limit(50)->label('Reason'),
+                TextColumn::make('status')->badge()
+                    ->color(fn (TravelStatus $state) => match($state) {
+                        TravelStatus::Draft => 'gray',
+                        TravelStatus::Pending => 'warning',
+                        TravelStatus::Approved => 'success',
+                        TravelStatus::Rejected => 'danger',
+                    }),
+                TextColumn::make('submitted_at')->dateTime()->sortable(),
+                TextColumn::make('created_at')->dateTime()->sortable()->toggleable(isToggledHiddenByDefault: true),
+            ])
+            ->filters([
+                SelectFilter::make('status')
+                    ->options(collect(TravelStatus::cases())->mapWithKeys(fn ($e) => [$e->value => $e->value])->toArray()),
+            ])
+            ->recordActions([
+                EditAction::make(),
+            ])
+            ->toolbarActions([
+                BulkActionGroup::make([
+                    DeleteBulkAction::make(),
+                ]),
+            ])
+            ->defaultSort('created_at', 'desc');
+    }
+}

app/Filament/Resources/TravelRequests/TravelRequestResource.php

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+<?php
+
+namespace App\Filament\Resources\TravelRequests;
+
+use App\Filament\Resources\TravelRequests\Pages\CreateTravelRequest;
+use App\Filament\Resources\TravelRequests\Pages\EditTravelRequest;
+use App\Filament\Resources\TravelRequests\Pages\ListTravelRequests;
+use App\Filament\Resources\TravelRequests\Schemas\TravelRequestForm;
+use App\Filament\Resources\TravelRequests\Tables\TravelRequestsTable;
+use App\Models\TravelRequest;
+use BackedEnum;
+use Filament\Resources\Resource;
+use Filament\Schemas\Schema;
+use Filament\Support\Icons\Heroicon;
+use Filament\Tables\Table;
+
+class TravelRequestResource extends Resource
+{
+    protected static ?string $model = TravelRequest::class;
+
+    protected static string|BackedEnum|null $navigationIcon = Heroicon::OutlinedRectangleStack;
+
+    public static function form(Schema $schema): Schema
+    {
+        return TravelRequestForm::configure($schema);
+    }
+
+    public static function table(Table $table): Table
+    {
+        return TravelRequestsTable::configure($table);
+    }
+
+    public static function getRelations(): array
+    {
+        return [
+            //
+        ];
+    }
+
+    public static function getPages(): array
+    {
+        return [
+            'index' => ListTravelRequests::route('/'),
+            'create' => CreateTravelRequest::route('/create'),
+            'edit' => EditTravelRequest::route('/{record}/edit'),
+        ];
+    }
+}