Added mfm meter importer and exporter file

app/Filament/Exports/MfmMeterExporter.php

@@ -0,0 +1,53 @@
+<?php
+
+namespace App\Filament\Exports;
+
+use App\Models\MfmMeter;
+use Filament\Actions\Exports\ExportColumn;
+use Filament\Actions\Exports\Exporter;
+use Filament\Actions\Exports\Models\Export;
+
+class MfmMeterExporter extends Exporter
+{
+    protected static ?string $model = MfmMeter::class;
+
+    public static function getColumns(): array
+    {
+        static $rowNumber = 0;
+        return [
+            ExportColumn::make('no')
+            ->label('NO')
+            ->state(function ($record) use (&$rowNumber) {
+                // Increment and return the row number
+                return ++$rowNumber;
+            }),
+            ExportColumn::make('plant.name')
+              ->label('PLANT'),
+            ExportColumn::make('device.name')
+              ->label('DEVICE NAME'),
+            ExportColumn::make('sequence')
+              ->label('SEQUENCE'),
+            ExportColumn::make('name')
+              ->label('NAME'),
+            ExportColumn::make('created_at')
+              ->label('CREATED AT'),
+            ExportColumn::make('updated_at')
+              ->label('UPDATED AT'),
+            ExportColumn::make('deleted_at')
+              ->label('DELETED AT'),
+            ExportColumn::make('created_by')
+              ->label('CREATED BY'),
+        ];
+    }
+
+    public static function getCompletedNotificationBody(Export $export): string
+    {
+        $body = 'Your mfm meter export has completed and ' . number_format($export->successful_rows) . ' ' . str('row')->plural($export->successful_rows) . ' exported.';
+
+        if ($failedRowsCount = $export->getFailedRowsCount()) {
+            $body .= ' ' . number_format($failedRowsCount) . ' ' . str('row')->plural($failedRowsCount) . ' failed to export.';
+        }
+
+        return $body;
+    }
+}

app/Filament/Imports/MfmMeterImporter.php

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+<?php
+
+namespace App\Filament\Imports;
+
+use App\Models\MfmMeter;
+use Filament\Actions\Imports\ImportColumn;
+use Filament\Actions\Imports\Importer;
+use Filament\Actions\Imports\Models\Import;
+
+class MfmMeterImporter extends Importer
+{
+    protected static ?string $model = MfmMeter::class;
+
+    public static function getColumns(): array
+    {
+        return [
+            ImportColumn::make('plant')
+               ->requiredMapping()
+                ->exampleHeader('Plant Name')
+                ->example('Ransar Industries-I')
+                ->label('Plant Name')
+                ->relationship(resolveUsing:'name')
+                ->rules(['required']),
+            ImportColumn::make('Device Name')
+                ->requiredMapping()
+                ->exampleHeader('Device Name')
+                ->example('REG001')
+                ->label('Device Name')
+                ->relationship(resolveUsing:'name')
+                ->rules(['required']),
+            ImportColumn::make('sequence')
+                ->requiredMapping()
+                ->exampleHeader('Sequence')
+                ->example('1')
+                ->label('Sequence')
+                ->rules(['required']),
+            ImportColumn::make('name')
+                ->requiredMapping()
+                ->exampleHeader('Meter Name')
+                ->example('Display SSB')
+                ->label('Meter Name')
+                ->rules(['required']),
+            ImportColumn::make('created_by')
+                ->requiredMapping()
+                ->exampleHeader('Created By')
+                ->example('Admin')
+                ->label('Created By')
+                ->rules(['required']),
+        ];
+    }
+
+    public function resolveRecord(): ?MfmMeter
+    {
+        // return MfmMeter::firstOrNew([
+        //     // Update existing records, matching them by `$this->data['column_name']`
+        //     'email' => $this->data['email'],
+        // ]);
+
+        return new MfmMeter();
+    }
+
+    public static function getCompletedNotificationBody(Import $import): string
+    {
+        $body = 'Your mfm meter import has completed and ' . number_format($import->successful_rows) . ' ' . str('row')->plural($import->successful_rows) . ' imported.';
+
+        if ($failedRowsCount = $import->getFailedRowsCount()) {
+            $body .= ' ' . number_format($failedRowsCount) . ' ' . str('row')->plural($failedRowsCount) . ' failed to import.';
+        }
+
+        return $body;
+    }
+}