[BUG?] Metadata Filter in Knowledge Search Node Not Working Since v1.13.0
In a workflow that was working correctly until about a week ago (around the v1.13.0 release), the metadata filter suddenly stopped working.
Environment
Dify Cloud
Current Status
Metadata product_name = "ProductA" is set in the knowledge base.
product_name = [Variable: user_input] is set in the metadata filter of the Knowledge Search Node.
Even when executed with user_input = "ProductA", { "result": [] } is returned.
The cencern value is not correctly passing the knowledge, and it’s possible that the search is not being performed using metadata.
Steps Taken
Confirmed field name match.
Even when changing the Variable to a Constant (fixed value \"ProductA\"), [] is returned.
Even when rolling back the workflow to last month’s version, it does not improve.
In v1.11.3, fix DatasetRetrieval._process_metadata_filter_func miss in operator (#30199) was fixed, but a regression may have occurred in a subsequent update.
If the part in the attached photo is a variable, searching is not possible; if it’s a constant, searching works without issues. Until recently, I was able to search using variables, so if there’s a way to search for metadata using variables, please let me know.
This appears to be a bug and has already been reported on GitHub.
I plan to fix it as is, but it will likely be tomorrow or later, and perhaps the people inside (the project/company) might be faster.
