变量赋值：支持设置为空

Author: wangliang181230

apps/application/flow/step_node/variable_assign_node/impl/base_variable_assign_node.py

@@ -89,6 +89,10 @@ def handle(self, variable, evaluation):
                 val = self.convert(val, variable.get('target_type'))
                 evaluation(variable, val)
                 result['output_value'] = val
+            elif variable['type'] == 'null':
+                val = None
+                evaluation(variable, val)
+                result['output_value'] = val
             else:
                 val = variable['value']
                 val = self.convert(val, variable.get('target_type'))

ui/src/workflow/nodes/variable-assign-node/index.vue

@@ -187,7 +187,7 @@ import { WorkflowMode } from '@/enums/application'
 const workflowMode = inject('workflowMode') as WorkflowMode
 const props = defineProps<{ nodeModel: any }>()
 
-const typeOptions = ['string', 'num', 'json', 'bool']
+const typeOptions = ['string', 'num', 'json', 'bool', 'null']
 const targetTypeOptions = [
   { label: t('workflow.nodes.variableAssignNode.doNotConvert'), key: '' },
   { label: 'string', key: 'string' },