aminghadersohi commented on code in PR #39915:
URL: https://github.com/apache/superset/pull/39915#discussion_r3211964828
##########
superset/mcp_service/chart/validation/schema_validator.py:
##########
@@ -525,6 +525,38 @@ def _pre_validate_mixed_timeseries_config(
return True, None
+ @staticmethod
+ def _format_single_error(err: Dict[str, Any]) -> tuple[str, str]:
+ """Return (detail_message, optional_suggestion) for one pydantic
error."""
+ loc_parts = [str(p) for p in err.get("loc", [])]
+ loc = " -> ".join(loc_parts)
+ msg = err.get("msg", "Validation failed")
+ err_type = err.get("type", "")
+ field = loc_parts[-1] if loc_parts else "field"
+
+ if err_type == "string_pattern_mismatch":
+ return (
+ f"'{field}' value contains disallowed characters. "
+ "Column names must not contain HTML, script tags, or SQL "
+ "injection patterns. Use the exact column name from your
dataset.",
+ "Use get_dataset_info to find exact column names",
+ )
Review Comment:
Fixed in ff7ace5c7d: now extracts the actual regex pattern from Pydantic's
error context (`err["ctx"]["pattern"]`) and includes it in the message
dynamically instead of hardcoding it.
Example output: `'name' value does not match the required format (required
pattern: \`^[a-zA-Z0-9_][a-zA-Z0-9_\\s\\-\\.]*$\`).`
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