fix:the extraction function of the list operation node received 0 that should not be received (#18170)

10 months ago · 8cc37f3115
parent c6e2970b65
commit 8cc37f3115
1 changed files with 4 additions and 1 deletions
--- a/api/core/workflow/nodes/list_operator/node.py
+++ b/api/core/workflow/nodes/list_operator/node.py
@ -149,7 +149,10 @@ class ListOperatorNode(BaseNode[ListOperatorNodeData]):
    def _extract_slice(
        self, variable: Union[ArrayFileSegment, ArrayNumberSegment, ArrayStringSegment]
    ) -> Union[ArrayFileSegment, ArrayNumberSegment, ArrayStringSegment]:
-        value = int(self.graph_runtime_state.variable_pool.convert_template(self.node_data.extract_by.serial).text) - 1
+        value = int(self.graph_runtime_state.variable_pool.convert_template(self.node_data.extract_by.serial).text)
+        if value < 1:
+            raise ValueError(f"Invalid serial index: must be >= 1, got {value}")
+        value -= 1
        if len(variable.value) > int(value):
            result = variable.value[value]
        else: