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@VirtualNonsense VirtualNonsense commented Nov 28, 2025

Hey everybody.
The current version of the library breaks when trying to add a Tasklist element to a message.
The root of the issue seems to lie in the implementation of the send method within tasklist because it does not have the required signature that is defined in the baseclass.


Summary by cubic

Fix Tasklist sending by aligning the send method with the base Element signature. This resolves crashes when adding Tasklist elements to messages.

  • Bug Fixes
    • Tasklist.send now accepts for_id and persist and forwards them to super().send.
    • update() generates a new message id and calls send(for_id=uuid...).

Written for commit 80783df. Summary will update automatically on new commits.

@dosubot dosubot bot added size:XS This PR changes 0-9 lines, ignoring generated files. backend Pertains to the Python backend. bug Something isn't working labels Nov 28, 2025
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1 issue found across 1 file

Prompt for AI agents (all 1 issues)

Check if these issues are valid — if so, understand the root cause of each and fix them.


<file name="backend/chainlit/element.py">

<violation number="1" location="backend/chainlit/element.py:352">
TaskList.send now omits the required preprocess_content call, so task data is never serialized before sending and the element always emits stale content.</violation>
</file>

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async def send(self):
await self.preprocess_content()
await super().send(for_id="")
async def send(self, for_id: str, persist=True):
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TaskList.send now omits the required preprocess_content call, so task data is never serialized before sending and the element always emits stale content.

Prompt for AI agents
Check if this issue is valid — if so, understand the root cause and fix it. At backend/chainlit/element.py, line 352:

<comment>TaskList.send now omits the required preprocess_content call, so task data is never serialized before sending and the element always emits stale content.</comment>

<file context>
@@ -346,11 +346,11 @@ async def add_task(self, task: Task):
-    async def send(self):
-        await self.preprocess_content()
-        await super().send(for_id=&quot;&quot;)
+    async def send(self, for_id: str, persist=True):
+        await super().send(for_id=for_id, persist=persist)
 
</file context>
Fix with Cubic

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