Add database helpers 'add_timestamps_with_timezone' and 'timestamps_with_timezone'32054-rails-should-use-timestamptz-database-type-for-postgresql

1 files changed, 36 insertions, 0 deletions

diff --git a/rubocop/cop/migration/datetime.rb b/rubocop/cop/migration/datetime.rb
new file mode 100644
index 00000000000..651935dd53e
--- /dev/null
+++ b/rubocop/cop/migration/datetime.rb
@@ -0,0 +1,36 @@
+require_relative '../../migration_helpers'
+
+module RuboCop
+  module Cop
+    module Migration
+      # Cop that checks if datetime data type is added with timezone information.
+      class Datetime < RuboCop::Cop::Cop
+        include MigrationHelpers
+
+        MSG = 'Do not use the `datetime` data type, use `datetime_with_timezone` instead'.freeze
+
+        # Check methods in table creation.
+        def on_def(node)
+          return unless in_migration?(node)
+
+          node.each_descendant(:send) do |send_node|
+            add_offense(send_node, :selector) if method_name(send_node) == :datetime
+          end
+        end
+
+        # Check methods.
+        def on_send(node)
+          return unless in_migration?(node)
+
+          node.each_descendant do |descendant|
+            add_offense(node, :expression) if descendant.type == :sym && descendant.children.last == :datetime
+          end
+        end
+
+        def method_name(node)
+          node.children[1]
+        end
+      end
+    end
+  end
+end