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How to properly use `delegate` with custom method names in Ruby on Rails 7.1?

👀 Views: 91 đŸ’Ŧ Answers: 1 📅 Created: 2025-06-12
ruby rails delegate

I've searched everywhere and can't find a clear answer... I'm trying to use the `delegate` method in my Rails 7.1 application to create a cleaner interface for accessing attributes of associated models. However, I'm running into issues when I attempt to delegate a method with a custom name. Here's a simplified version of my models: ```ruby class User < ApplicationRecord has_one :profile delegate :bio, to: :profile, prefix: true end class Profile < ApplicationRecord belongs_to :user def bio "This is my bio" end end ``` With this setup, I expect to be able to access the bio of a user's profile using `user.profile_bio`. However, when I call `user.profile_bio`, I get a `NoMethodError` saying that the method is undefined: ``` NoMethodError: undefined method `profile_bio' for #<User:0x00007ff0abc12345> ``` I verified that the `profile` association is correctly set up and that the `bio` method exists in the `Profile` model. I even tried clearing the cache and restarting the server, but the behavior continues. Additionally, I want to know how to handle scenarios where the user might not have an associated profile. I want to avoid getting a `nil` behavior when trying to access `user.profile_bio` if the profile does not exist. Any insights on how to achieve this would be greatly appreciated! This is part of a larger API I'm building. Am I missing something obvious? I'm on Linux using the latest version of Ruby. I'm open to any suggestions.