best practices for `NoMethodError` when calling a method on a private instance variable in Rails 7?
After trying multiple solutions online, I still can't figure this out. I'm running into a `NoMethodError` when trying to access a private instance variable from a method in my Rails 7 controller... I've defined the instance variable in a private method and then attempting to use it in another action. Here’s a simplified version of my code: ```ruby class PostsController < ApplicationController before_action :set_post, only: [:show, :edit, :update, :destroy] def show @post_title = fetch_title render json: { title: @post_title } end private def set_post @post = Post.find(params[:id]) end def fetch_title @post.title end end ``` However, when I run the `show` action, I receive the following behavior: ``` NoMethodError: private method `title' called for nil:NilClass ``` I’ve double-checked that the `@post` variable is being set correctly in the `set_post` method, and I can see in the logs that it does retrieve the post with the expected ID. I even tried to log `@post` right before calling `fetch_title`: ```ruby def show @post_title = fetch_title Rails.logger.debug(@post.inspect) # This shows the post correctly render json: { title: @post_title } end ``` Despite this, I still get the `NoMethodError` indicating that `@post` is nil when `fetch_title` is called. I’ve tried moving the `fetch_title` method to public, but the behavior continues. What could be causing this scenario? Could it be related to the order of method calls or something else in Rails 7 that I might be missing? This is my first time working with Ruby LTS. Am I missing something obvious? I've been using Ruby for about a year now.