more_like_this.rb in europeana-blacklight-0.3.3

- old
+ new

@@ -24,11 +24,11 @@
           ]
         end
 
         def more_like_this_field_terms(*fields)
           fields.flatten.map do |field|
-            fetch(field, []).compact
+            fetch(field, []).compact[0..9]
           end.flatten
         end
 
         def more_like_this_field_queries(param = nil)
           logic = more_like_this_logic.select do |component|
@@ -40,10 +40,14 @@
           end.compact
         end
 
         def more_like_this_param_query(param, terms, boost)
           return nil unless terms.present?
-          or_terms = terms.map do |v|
+
+          string_terms = terms.select { |t| t.is_a?(String) }
+          return nil unless string_terms.present?
+
+          or_terms = string_terms.map do |v|
             '"' + Europeana::API::Search.escape(v) + '"'
           end.join(' OR ')
           "#{param}: (#{or_terms})^#{boost}"
         end
       end