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app/Filament/Resources/Projektes/Widgets/WidgetProjektMerkmale.php

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+<?php
+
+namespace App\Filament\Resources\Projektes\Widgets;
+
+use App\Models\ProjektMerkmale;
+use App\Models\ProjektObjekte;
+use Filament\Actions\Action;
+use Filament\Actions\DeleteAction;
+use Filament\Actions\EditAction;
+use Filament\Forms\Components\TextInput;
+use Filament\Tables\Columns\TextColumn;
+use Filament\Tables\Table;
+use Filament\Widgets\TableWidget;
+use Illuminate\Database\Eloquent\Builder;
+
+class WidgetProjektMerkmale extends TableWidget
+{
+    protected static ?string $navigationLabel = 'Merkmal';
+
+    protected static ?string $pluralModelLabel = 'ProjektMerkmale';
+
+    protected static ?string $modelLabel = 'Merkmal';
+
+    protected static ?string $title = 'Merkmal';
+
+    public $projekte_id;
+
+    public function table(Table $table): Table
+    {
+        return $table
+            ->striped()
+            ->query(fn (): Builder => ProjektMerkmale::where('projekte_id', $this->projekte_id))
+            ->defaultSort('code')
+            ->columns([
+                TextColumn::make('name'),
+            ])
+            ->paginated(false)
+            ->recordActions([
+                EditAction::make()
+                    ->color('gray')
+                    ->iconButton()
+                    ->schema([
+                        TextInput::make('name')
+                            ->required()
+                            ->maxLength(255),
+                    ]),
+                DeleteAction::make()
+                    ->modalHeading('Merkmal löschen')
+                    ->color('gray')
+                    ->iconButton()
+                    ->after(function ($record) {
+                        ProjektObjekte::where('projekte_id', '=', $record->projekte_id)
+                            ->update(
+                                [$record->code => 0]
+                            );
+                        $res = ProjektObjekte::where('projekte_id', '=', $record->projekte_id)->get();
+                        foreach ($res as $value) {
+                            $nutzwert = round($value->a + $value->b + $value->c + $value->d + $value->e + $value->f + $value->g + $value->h + $value->i + $value->j);
+                            ProjektObjekte::where('id', '=', $value->id)
+                                ->update(
+                                    ['nutzwert' => $nutzwert]
+                                );
+                        }
+
+                    }),
+            ])
+            ->headerActions([
+                Action::make('name')
+                    ->icon('phosphor-plus')
+                    ->label('Merkmal')
+                    ->schema([
+                        TextInput::make('name')
+                            ->prefixIcon('phosphor-house-simple'),
+                    ])
+                    ->action(function (array $data) {
+                        $code = ProjektMerkmale::getfreecode($this->projekte_id);
+                        if ($code) {
+                            $merkmal = new ProjektMerkmale;
+                            $merkmal->projekte_id = $this->projekte_id;
+                            $merkmal->code = $code;
+                            $merkmal->name = $data['name'];
+                            $merkmal->save();
+                        }
+                    }),
+            ]);
+    }
+}