adds validation to imports

app/Imports/Sheets/TransactionsSheet.php

@@ -7,15 +7,16 @@ use Illuminate\Support\Collection;
 use Maatwebsite\Excel\Concerns\ToCollection;
 use Maatwebsite\Excel\Concerns\SkipsEmptyRows;
 use Maatwebsite\Excel\Concerns\WithHeadingRow;
+use Maatwebsite\Excel\Concerns\WithValidation;
 use Maatwebsite\Excel\Concerns\WithChunkReading;
 
-class TransactionsSheet implements ToCollection, WithHeadingRow, SkipsEmptyRows, WithChunkReading
+class TransactionsSheet implements ToCollection, WithHeadingRow, WithValidation, SkipsEmptyRows, WithChunkReading
 {
     // use Importable;
 
     public function collection(Collection $transactions)
     {
-        foreach ($transactions as $transaction) {
+        foreach ($transactions->sortBy('date') as $transaction) {
 
             Transaction::where('id', $transaction['transaction_id'])
                     ->firstOr(function () use ($transaction) {
@@ -35,6 +36,21 @@ class TransactionsSheet implements ToCollection, WithHeadingRow, SkipsEmptyRows,
         }
     }
 
+    public function rules(): array
+    {
+        return [
+            'transaction_id' => ['sometimes', 'nullable'],
+            'symbol' => ['required', 'string'],
+            'portfolio_id' => ['required', 'exists:portfolios,id'],
+            'quantity' => ['required', 'min:0', 'numeric'],
+            'transaction_type' => ['required', 'in:BUY,SELL'],
+            'date' => ['required', 'date'],
+            'quantity' => ['required', 'min:0', 'numeric'],
+            'cost_basis' => ['sometimes', 'nullable', 'min:0', 'numeric'],
+            'sale_price' => ['sometimes', 'nullable', 'min:0', 'numeric'],
+        ];
+    }
+
     public function chunkSize(): int
     {
         return 500;