v2 first commit

app/Exports/Expenses/Sheets/BillItems.php

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+<?php
+
+namespace App\Exports\Expenses\Sheets;
+
+use App\Models\Expense\BillItem as Model;
+use Maatwebsite\Excel\Concerns\FromCollection;
+use Maatwebsite\Excel\Concerns\ShouldAutoSize;
+use Maatwebsite\Excel\Concerns\WithHeadings;
+use Maatwebsite\Excel\Concerns\WithMapping;
+use Maatwebsite\Excel\Concerns\WithTitle;
+
+class BillItems implements FromCollection, ShouldAutoSize, WithHeadings, WithMapping, WithTitle
+{
+    public $bill_ids;
+
+    public function __construct($bill_ids = null)
+    {
+        $this->bill_ids = $bill_ids;
+    }
+
+    public function collection()
+    {
+        $model = Model::usingSearchString(request('search'));
+
+        if (!empty($this->bill_ids)) {
+            $model->whereIn('bill_id', (array) $this->bill_ids);
+        }
+
+        return $model->get();
+    }
+
+    public function map($model): array
+    {
+        return [
+            $model->bill_id,
+            $model->item_id,
+            $model->name,
+            $model->price,
+            $model->total,
+            $model->tax,
+        ];
+    }
+
+    public function headings(): array
+    {
+        return [
+            'bill_id',
+            'item_id',
+            'name',
+            'price',
+            'total',
+            'tax',
+        ];
+    }
+
+    public function title(): string
+    {
+        return 'bill_items';
+    }
+}