Merge pull request #40 from doits/add_array_option

make sure to create temporal table column with correct array attribute

lib/temporal_tables/temporal_adapter.rb

@@ -39,7 +39,7 @@ def add_temporal_table(table_name, **options) # rubocop:disable Metrics/MethodLe
         t.datetime :eff_to,   null: false, limit: 6, default: TemporalTables::END_OF_TIME
 
         columns(table_name).each do |c|
-          column_options = { limit: c.limit }
+          column_options = { limit: c.limit, array: c.try(:array) }.compact
           column_type = c.type
           if column_type == :enum
             enum_type = c.sql_type_metadata.sql_type

spec/basic_history_spec.rb

@@ -191,6 +191,22 @@
     end
   end
 
+  if TemporalTables::DatabaseAdapter.adapter_name != 'mysql'
+    describe 'when changing a creature with an array column' do
+      let!(:cat) { Cat.create name: 'Mr. Mittens', nicknames: %w[Blacky Kitty] }
+
+      before do
+        cat.update nicknames: %w[Cutie Mizie]
+      end
+
+      it 'show nicknames correctly' do
+        expect(cat.nicknames).to eq(%w[Cutie Mizie])
+        expect(cat.history.last.nicknames).to eq(%w[Cutie Mizie])
+        expect(cat.history.first.nicknames).to eq(%w[Blacky Kitty])
+      end
+    end
+  end
+
   # The following tests PKs with names other than "id"
   describe 'when spawning and renaming a creature with PK not named id' do
     let!(:dog) { Dog.create name: 'Fido' }

spec/internal/db/schema.rb

@@ -42,6 +42,7 @@
     t.string :name
     t.string :color
     t.column :breed, (postgres ? :cat_breed : :string), null: false, default: 'ragdoll'
+    t.string :nicknames, array: true if postgres
   end
 
   create_table :cat_lives, id: (postgres ? :uuid : :integer), temporal: true do |t|