admin update

admin/control/merchant.php

@@ -169,12 +169,15 @@ class merchantControl extends SystemControl
             $update_credit_bonus = ncPriceFormat($_POST['credit_bonus']);
             $operatetype = $_POST['operatetype'];
             if ($update_credit_bonus > 0) {
-                if ($merchant['credit_bonus'] + $update_credit_bonus < 0) {
-                    showMessage('授信金额调整后不能小于0');
-                }
                 if ($operatetype == 'add') {
+                    if ($merchant['credit_bonus'] + $update_credit_bonus < 0) {
+                        showMessage('授信金额调整后不能小于0');
+                    }
                     $update['credit_bonus'] = ['exp', 'credit_bonus+' . $update_credit_bonus];
                 } elseif ($operatetype == 'del') {
+                    if ($merchant['credit_bonus'] - $update_credit_bonus < 0) {
+                        showMessage('授信金额调整后不能小于0');
+                    }
                     $update['credit_bonus'] = ['exp', 'credit_bonus-' . $update_credit_bonus];
                 }
             }