Don’t Conflate Helpers with the Domain
Understand the role and limitations of helpers in Ruby on Rails, focusing on reducing clutter by modeling domain logic correctly. Learn to keep helpers focused on rendering and UI tasks, avoid conflating domain logic with view-specific code, and maintain security in markup generation. This lesson clarifies how to use helpers while preserving sustainable code organization and improving maintainability.
We'll cover the following...
Helpers are handy, yet also a magnet for mess and unsustainability. We are not going to give a perfectly clean and sustainable solution here, but we can help clarify the issues with helpers, explain the best way to use them, and help ease some of the confusion.
Helpers are a way (the only way) to export methods to be available to a view. Any method defined in app/helpers/application_helper.rb will be included and available to all our views. Helpers can also be added via the helper_method in a controller, which will import methods from a class, module, block of code, or really anywhere.
The main problem that ...