Merge Invoice and Bill into Document

app/Exports/Sales/Sheets/InvoiceHistories.php

@@ -1,43 +0,0 @@
-<?php
-
-namespace App\Exports\Sales\Sheets;
-
-use App\Abstracts\Export;
-use App\Models\Sale\InvoiceHistory as Model;
-
-class InvoiceHistories extends Export
-{
-    public function collection()
-    {
-        $model = Model::with('invoice')->usingSearchString(request('search'));
-
-        if (!empty($this->ids)) {
-            $model->whereIn('invoice_id', (array) $this->ids);
-        }
-
-        return $model->cursor();
-    }
-
-    public function map($model): array
-    {
-        $invoice = $model->invoice;
-
-        if (empty($invoice)) {
-            return [];
-        }
-
-        $model->invoice_number = $invoice->invoice_number;
-
-        return parent::map($model);
-    }
-
-    public function fields(): array
-    {
-        return [
-            'invoice_number',
-            'status',
-            'notify',
-            'description',
-        ];
-    }
-}