[backport] Add a time type attribute

app/values/blacklight/types.rb

@@ -69,6 +69,19 @@ def cast(input)
       end
     end
 
+    class Time < Value
+      def cast(input)
+        value = super
+        return if value.blank?
+
+        begin
+          ::Time.parse(value.to_s) # rubocop:disable Rails/TimeZone
+        rescue ArgumentError
+          Rails.logger&.info "Unable to parse time: #{value.inspect}"
+        end
+      end
+    end
+
     class Boolean < Value
       def cast(input)
         ActiveModel::Type::Boolean.new.cast(super)
@@ -110,6 +123,7 @@ def cast(input)
     register :boolean, Boolean
     register :string, String
     register :date, Date
+    register :time, Time
     register :array, Array
     register :json, JsonValue
     register :html, Html

spec/models/solr_document_spec.rb

@@ -49,21 +49,25 @@
         attribute :author, :array, 'author_tesim', of: :string
         attribute :first_author, :select, 'author_tesim', by: :min
         attribute :date, :date, field: 'date_dtsi'
+        attribute :time, :time, field: 'date_dtsi'
         attribute :whatever, :string, default: ->(*) { 'default_value' }
       end
     end
     let(:document) do
       doc_class.new(id: '123',
                     title_tesim: ['Good Omens'],
                     author_tesim: ['Neil Gaiman', 'Terry Pratchett'],
-                    date_dtsi: '1990-01-01T00:00:00Z')
+                    date_dtsi: '1990-01-01T17:23:13Z')
     end
 
     it "casts the attributes" do
       expect(document.title).to eq 'Good Omens'
       expect(document.author).to eq ['Neil Gaiman', 'Terry Pratchett']
       expect(document.first_author).to eq 'Neil Gaiman'
-      expect(document.date).to eq Date.new(1990)
+      expect(document.date).to be_a Date
+      expect(document.date.to_s).to eq '1990-01-01'
+      expect(document.time).to be_a Time
+      expect(document.time.to_s).to eq '1990-01-01 17:23:13 UTC'
       expect(document.whatever).to eq 'default_value'
     end