Added serial export excel page

app/Exports/SerialExport.php

@@ -0,0 +1,68 @@
+<?php
+
+namespace App\Exports;
+
+use Maatwebsite\Excel\Concerns\FromCollection;
+use Maatwebsite\Excel\Concerns\WithHeadings;
+use Illuminate\Support\Collection;
+use PhpOffice\PhpSpreadsheet\Style\NumberFormat;
+use Maatwebsite\Excel\Concerns\WithColumnFormatting;
+use PhpOffice\PhpSpreadsheet\Cell\Cell;
+use PhpOffice\PhpSpreadsheet\Cell\DataType;
+use PhpOffice\PhpSpreadsheet\Cell\DefaultValueBinder;
+use Maatwebsite\Excel\Concerns\WithCustomValueBinder;
+
+class SerialExport extends DefaultValueBinder implements FromCollection, WithHeadings, WithCustomValueBinder
+, WithColumnFormatting
+{
+    /**
+    * @return \Illuminate\Support\Collection
+    */
+
+    protected $itemCode;
+    protected $fromSerial;
+    protected $toSerial;
+
+    public function __construct($itemCode, $fromSerial, $toSerial)
+    {
+        $this->itemCode = $itemCode;
+        $this->fromSerial = $fromSerial;
+        $this->toSerial = $toSerial;
+    }
+
+    public function bindValue(Cell $cell, $value)
+    {
+        $cell->setValueExplicit((string) $value, DataType::TYPE_STRING);
+
+        return true;
+    }
+
+    public function collection()
+    {
+        $rows = [];
+
+        for ($i = $this->fromSerial; $i <= $this->toSerial; $i++) {
+            $rows[] = [
+                'item_code' => $this->itemCode,
+                'serial_number' => str_pad($i, 6, '0', STR_PAD_LEFT),
+            ];
+        }
+
+        return new Collection($rows);
+    }
+
+    public function columnFormats(): array
+    {
+        return [
+            'B' => NumberFormat::FORMAT_TEXT,
+        ];
+    }
+
+    public function headings(): array
+    {
+        return [
+            'Item Code',
+            'Serial Number',
+        ];
+    }
+}