Filament: Table with Reorderable Positions

Demonstrates how to reorder positions with drag'n'drop, also handling the situations of auto-assigning the new position to a new record and auto-reorder when any record is deleted.

Screenshot 2023-10-05 at 20.56.03

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How it works

Categories

The main ordering functionality is defined in table method using defaultSort and reordable functions with an argument of column name to order by.

->defaultSort('position')
->reorderable('position')

app/Filament/Resources/CategoryResource.php

namespace App\Filament\Resources;
 
use App\Filament\Resources\CategoryResource\Pages;
use App\Filament\Resources\CategoryResource\RelationManagers;
use App\Models\Category;
use Filament\Forms;
use Filament\Forms\Components\TextInput;
use Filament\Forms\Form;
use Filament\Resources\Resource;
use Filament\Tables;
use Filament\Tables\Columns\TextColumn;
use Filament\Tables\Table;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\SoftDeletingScope;
 
class CategoryResource extends Resource
{
protected static ?string $model = Category::class;
 
protected static ?string $navigationIcon = 'heroicon-o-rectangle-stack';
 
public static function form(Form $form): Form
{
return $form
->schema([
TextInput::make('name')
->required(),
]);
}
 
public static function table(Table $table): Table
{
return $table
->columns([
TextColumn::make('name'),
])
->filters([
//
])
->actions([
Tables\Actions\EditAction::make(),
])
->bulkActions([
Tables\Actions\BulkActionGroup::make([
Tables\Actions\DeleteBulkAction::make(),
]),
])
->defaultSort('position')
->reorderable('position');
}
 
public static function getRelations(): array
{
return [
//
];
}
 
public static function getPages(): array
{
return [
'index' => Pages\ListCategories::route('/'),
'create' => Pages\CreateCategory::route('/create'),
'edit' => Pages\EditCategory::route('/{record}/edit'),
];
}
}

Usually position of the categories is saved after you reorder them in the table. By default this value is null.

To have position value assigned when creating a new category we have observer with creating listener. It gets maximum value of the position column on the table and...

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