lib/lookup_by/cache.rb in lookup_by-0.6.0 vs lib/lookup_by/cache.rb in lookup_by-0.7.0

@@ -23,9 +23,11 @@
 
       case options[:cache]
       when true
         @type    = :all
         @read  ||= false
+
+        raise ArgumentError, "`#{@klass}.lookup_by :#{@field}` Should be `cache: true` or `cache: N, find_or_create: true`" if @write
       when ::Integer
         raise ArgumentError, "`#{@klass}.lookup_by :#{@field}` options[:find] must be true when caching N" if @read == false
 
         @type    = :lru
         @limit   = options[:cache]