Expand filtering to all fields

pyiricdata/Client.py

@@ -222,12 +222,12 @@ class Client:
     """ Get a subset of the available datafiles for which there is a match,
         kwargs refer to get_datafiles_list arguments
     """
-    def filter_datafiles(self, term, exact_match=False, **kwargs):
+    def filter_datafiles(self, term, field='filename', exact_match=False, **kwargs):
         df = self.get_datafiles_list(**kwargs)
         if exact_match:
-            return df[df.filename.str.fullmatch(term)]
+            return df[df[field].str.fullmatch(term)]
         else:
-            return df[df.filename.str.contains(term)]
+            return df[df[field].str.contains(term)]
 
     """ Get file content according to file_id """
     def get_file(self, file_id):