chain.rb in dynamoid-3.8.0

- old
+ new

@@ -185,14 +185,14 @@
       #
       # @return [Model|nil]
       def first(*args)
         n = args.first || 1
 
-        return scan_limit(n).to_a.first(*args) if @query.blank?
+        return self.dup.scan_limit(n).to_a.first(*args) if @query.blank?
         return super if @key_fields_detector.non_key_present?
 
-        record_limit(n).to_a.first(*args)
+        self.dup.record_limit(n).to_a.first(*args)
       end
 
       # Returns the last item matching the criteria.
       #
       #   Post.where(links_count: 2).last
@@ -484,19 +484,21 @@
       # memory footprint.
       #
       # @return [Array]
       def pluck(*args)
         fields = args.map(&:to_sym)
-        @project = fields
 
+        scope = self.dup
+        scope.project(*fields)
+
         if fields.many?
-          items.map do |item|
+          scope.items.map do |item|
             fields.map { |key| Undumping.undump_field(item[key], source.attributes[key]) }
           end.to_a
         else
           key = fields.first
-          items.map { |item| Undumping.undump_field(item[key], source.attributes[key]) }.to_a
+          scope.items.map { |item| Undumping.undump_field(item[key], source.attributes[key]) }.to_a
         end
       end
 
       private
 
@@ -511,10 +513,11 @@
 
       # Raw items like they are stored before type casting
       def items
         raw_pages.lazy.flat_map { |items, _| items }
       end
+      protected :items
 
       # Arrays of records, sized based on the actual pages produced by DynamoDB
       #
       # @return [Enumerator] an iterator of the found records.
       #
@@ -566,10 +569,10 @@
         end
       end
 
       def issue_scan_warning
         Dynamoid.logger.warn 'Queries without an index are forced to use scan and are generally much slower than indexed queries!'
-        Dynamoid.logger.warn "You can index this query by adding index declaration to #{source.to_s.downcase}.rb:"
+        Dynamoid.logger.warn "You can index this query by adding index declaration to #{source.to_s.underscore}.rb:"
         Dynamoid.logger.warn "* global_secondary_index hash_key: 'some-name', range_key: 'some-another-name'"
         Dynamoid.logger.warn "* local_secondary_index range_key: 'some-name'"
         Dynamoid.logger.warn "Not indexed attributes: #{query.keys.sort.collect { |name| ":#{name}" }.join(', ')}"
       end
 