update

@@ -352,6 +352,9 @@ class ProjectUpdate extends Command
                                         //扩展字段
                                         //扩展字段
                                         if ($item['extend'] ?? []) {
                                         if ($item['extend'] ?? []) {
                                             foreach (array_reverse($item['extend']) as $ke => $ve) {
                                             foreach (array_reverse($item['extend']) as $ke => $ve) {
+                                                if ($ve == '--') {
+                                                    $ve = '';
+                                                }
                                                 $extend = $extend_model->read(['title' => $ke]);
                                                 $extend = $extend_model->read(['title' => $ke]);
                                                 if (!$extend) {
                                                 if (!$extend) {
                                                     $extend_key = $this->get_extend_key($extend_model);
                                                     $extend_key = $this->get_extend_key($extend_model);