👀 Views: 1 💬 Answers: 1 📅 Created: 2025-06-01

ruby rails factory-bot Ruby

This might be a silly question, but I'm having trouble with I'm a bit lost with I'm working on a personal project and I'm sure I'm missing something obvious here, but I'm working with a `NameError: uninitialized constant` behavior when trying to create an instance of a nested model using FactoryBot in my Rails 6.1 application..... I have a `User` model that has many `Posts`, and I've set up the factories as shown below: ```ruby # spec/factories/users.rb FactoryBot.define do factory :user do name { 'Test User' } after(:build) do |user| user.posts << build_list(:post, 3) end end end # spec/factories/posts.rb FactoryBot.define do factory :post do title { 'Sample Post' } body { 'This is a sample post.' } end end ``` When I run the following test: ```ruby let(:user) { create(:user) } it 'creates a user with posts' do expect(user.posts.size).to eq(3) end ``` I get this behavior: ``` NameError: uninitialized constant User::Posts ``` I've double-checked that the `Post` model is defined correctly and that the association is set up in the `User` model as follows: ```ruby class User < ApplicationRecord has_many :posts end ``` I also verified the database migrations and everything seems to be in place. The tests run fine for other simple user creation scenarios without the nested posts. I've tried restarting the test server and reloading the schema, but the behavior continues. Is there something I'm missing regarding how FactoryBot handles associations or how Rails loads constants for nested attributes? Any insights would be greatly appreciated! I'd really appreciate any guidance on this. This is part of a larger service I'm building. This issue appeared after updating to Ruby stable. I'd really appreciate any guidance on this. I'm developing on Debian with Ruby. Any pointers in the right direction? What are your experiences with this?