Minor tweak to appease Hakiri

app/models/concerns/can_generate_reg_identifier.rb

@@ -17,12 +17,15 @@ def generate_reg_identifier
   def latest_counter
     # Get the counter for reg_identifiers, or create it if it doesn't exist
     counter = Counter.where(_id: "regid").first || Counter.create(_id: "regid", seq: 1)
+    counter_number = counter.seq
 
     # Increment the counter until no reg_identifier is using it
-    while Registration.where(reg_identifier: /CBD[U|L]#{counter.seq}/).exists?
+    # We reset counter_number instead of using counter.seq as Hakiri warns against model values in regexes
+    while Registration.where(reg_identifier: /CBD[U|L]#{counter_number}/).exists?
       counter.increment
+      counter_number = counter.seq
     end
 
-    counter.seq
+    counter_number
   end
 end