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fix: truncate conversation variable description to 255 chars in draft prefill #33393

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fix: truncate conversation variable description to 255 chars in draft prefill #33393

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fix: truncate conversation variable description to 255 chars in draft…
JasonOA888 Mar 13, 2026
57d1fa0
Merge branch 'main' into fix/truncate-conversation-variable-description
crazywoola Mar 13, 2026
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6 changes: 5 additions & 1 deletion api/services/workflow_draft_variable_service.py
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Original file line number Diff line number Diff line change
Expand Up @@ -583,11 +583,15 @@ def prefill_conversation_variable_default_values(self, workflow: Workflow):
""""""
draft_conv_vars: list[WorkflowDraftVariable] = []
for conv_var in workflow.conversation_variables:
# Truncate description to 255 characters to match database column constraint
# Workflow._conversation_variables stores descriptions as LongText, but
# WorkflowDraftVariable.description is varchar(255)
truncated_description = (conv_var.description or "")[:255]
draft_var = WorkflowDraftVariable.new_conversation_variable(
app_id=workflow.app_id,
name=conv_var.name,
value=conv_var,
description=conv_var.description,
description=truncated_description,
)
draft_conv_vars.append(draft_var)
_batch_upsert_draft_variable(
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