Fix AttributeError when creating AnalysisSpec with results range via …

…JSONAPI (#2431)

* Update validators.py

* #2428 Fix error raise when create analysisspec with resultsrange by JSONAPI

---------

Co-authored-by: Jordi Puiggené <jp@naralabs.com>

CHANGES.rst

@@ -4,6 +4,7 @@ Changelog
 2.5.0 (unreleased)
 ------------------
 
+- #2431 Fix AttributeError when creating AnalysisSpec with results range via JSONAPI
 - #2436 Fix instrument locations not displayed in listing
 - #2433 Fix multi-valued interim fields are not displayed correctly
 - #2429 Fix recipients column in report listing to show those recipients to whom the report was also sent to

src/bika/lims/validators.py

@@ -815,7 +815,7 @@ class AnalysisSpecificationsValidator:
 
     def __call__(self, value, *args, **kwargs):
         instance = kwargs["instance"]
-        request = kwargs.get("REQUEST", {})
+        request = kwargs.get("REQUEST") or {}
         fieldname = kwargs["field"].getName()
 
         # This value in request prevents running once per subfield value.