lib/enumerate_by.rb in enumerate_by-0.4.1 vs lib/enumerate_by.rb in enumerate_by-0.4.2

@@ -251,11 +251,14 @@
     # Otherwise, any changes to that column remain there.
     def bootstrap(*records)
       uncached do
         # Remove records that are no longer being used
         records.flatten!
-        delete_all(['id NOT IN (?)', records.map {|record| record[:id]}])
+        ids = records.map {|record| record[:id]}.compact
+        delete_all(ids.any? ? ['id NOT IN (?)', ids] : nil)
+        
+        # Find remaining existing records (to be updated)
         existing = all.inject({}) {|existing, record| existing[record.id] = record; existing}
         
         records.map! do |attributes|
           attributes.symbolize_keys!
           defaults = attributes.delete(:defaults)
@@ -300,10 +303,11 @@
     # 
     # See EnumerateBy::Bootstrapped#bootstrap for information about usage.
     def fast_bootstrap(*records)
       # Remove records that are no longer being used
       records.flatten!
-      delete_all(['id NOT IN (?)', records.map {|record| record[:id]}])
+      ids = records.map {|record| record[:id]}.compact
+      delete_all(ids.any? ? ['id NOT IN (?)', ids] : nil)
       
       # Find remaining existing records (to be updated)
       quoted_table_name = self.quoted_table_name
       existing = connection.select_all("SELECT * FROM #{quoted_table_name}").inject({}) {|existing, record| existing[record['id'].to_i] = record; existing}