增加is_null判断

app/AdminAgent/Controllers/AdvertisingController.php

@@ -121,19 +121,23 @@ class AdvertisingController extends AdminController
 				return $form->response()->error('数据不存在');
 			}
 
-			//将null字段设置为空值，防止插入数据库出错
-			foreach ($form->input() as $k => $v) {
-				if (is_null($v)) {
-					$form->$k = '';
-				}
-			}
-
         	//处理特殊字段
 			$form->hidden(['agent_id', 'url']);
         	$form->agent_id = Admin::user()->id;
+        	if (!is_null($form->status)) {
 				$form->status = $form->status ? 1 : 0;
+			}
+        	if (!is_null($form->type)) {
 				$form->url = $form->{'url-' . $form->type};
 				$form->deleteInput(['url-0', 'url-1']);
+			}
+
+			//将null字段设置为空值，防止插入数据库出错
+			foreach ($form->input() as $k => $v) {
+				if (is_null($v)) {
+					$form->$k = '';
+				}
+			}
 
 			//不允许编辑的字段
 			$form->ignore(['id', 'created_at', 'updated_at']);