Helper Inclusion Order
One of the many problems with Rails helper implementation is that the inclusion order matters. This can lead to problems with the following exception.
undefined method `output_buffer=' for #<Comment::Cell:0xb518d8cc>
Usually, the problem arises when you have initializers to setup your application cell. When including helpers here, they might be included before the
cells gem has a chance to include its fixes.
Please include your template engine module explicitly then, after your standard helper inclusions.
# config/initializers/trailblazer.rb Cell::Concept.class_eval do include ActionView::Helpers::TranslationHelpers # include your helpers here. include Cell::Erb # or Cell::Slim, or Cell::Haml after that end