bills import/export

app/Imports/Purchases/Sheets/BillHistories.php

@@ -3,13 +3,19 @@
 namespace App\Imports\Purchases\Sheets;
 
 use App\Abstracts\Import;
-use App\Models\Purchase\BillHistory as Model;
 use App\Http\Requests\Purchase\BillHistory as Request;
+use App\Models\Purchase\Bill;
+use App\Models\Purchase\BillHistory as Model;
 
 class BillHistories extends Import
 {
     public function model(array $row)
     {
+        // @todo remove after 3.2 release
+        if ($row['bill_number'] == $this->empty_field) {
+            return null;
+        }
+
         return new Model($row);
     }
 
@@ -17,6 +23,8 @@ class BillHistories extends Import
     {
         $row = parent::map($row);
 
+        $row['bill_id'] = Bill::number($row['bill_number'])->pluck('id')->first();
+
         $row['notify'] = (int) $row['notify'];
 
         return $row;
@@ -24,6 +32,11 @@ class BillHistories extends Import
 
     public function rules(): array
     {
-        return (new Request())->rules();
+        $rules = (new Request())->rules();
+
+        $rules['bill_number'] = 'required|string';
+        unset($rules['bill_id']);
+
+        return $rules;
     }
 }