限购报错

app/Api/Controllers/DrugController.php

@@ -140,7 +140,8 @@ public function drugLimit(Request $request)
         foreach ($prescriptions_7 as $prescription_7) {
         foreach ($prescriptions_7 as $prescription_7) {
             $drugInfos_7 = $prescription_7->drug_info ?? [];
             $drugInfos_7 = $prescription_7->drug_info ?? [];
             foreach ($drugInfos_7 as $drugInfo_7) {
             foreach ($drugInfos_7 as $drugInfo_7) {
-                if ($drugInfo_7 && in_array($drugInfo_7->drug_name, $limit_keywords)) {
+                $drugName = $drugInfo_7->drug_name ?? '';
+                if ($drugInfo_7 && in_array($drugName, $limit_keywords)) {
                     $buyed_mahuang_counts += $drugInfo_7['num'];
                     $buyed_mahuang_counts += $drugInfo_7['num'];
                 }
                 }
             }
             }