Fix AttributeError on analysis update with interim values via jsonapi (…

…#2650)

* Use instance's REQUEST instead of kwargs's

* Changelog

CHANGES.rst

@@ -4,6 +4,7 @@ Changelog
 2.6.0 (unreleased)
 ------------------
 
+- #2650 Fix AttributeError on analysis update with interim values via jsonapi
 - #2648 Increase the default width for field labels to min 150px
 - #2647 Fix analysis instrument is not auto-assigned on change in worksheet
 - #2643 Improve performance of analysis verification

src/bika/lims/validators.py

@@ -295,7 +295,8 @@ class InterimFieldsValidator:
     def __call__(self, value, *args, **kwargs):
         instance = kwargs['instance']
         fieldname = kwargs['field'].getName()
-        request = kwargs.get('REQUEST', {})
+        # do not rely on kwargs's REQUEST, cause it might be None!
+        request = instance.REQUEST
         form = request.form
         interim_fields = form.get(fieldname, [])
 
@@ -306,7 +307,7 @@ def __call__(self, value, *args, **kwargs):
         # values
         # this value in request prevents running once per subfield value.
         key = instance.id + fieldname
-        if instance.REQUEST.get(key, False):
+        if request.get(key, False):
             return True
 
         for x in range(len(interim_fields)):