Rails create! using wrong class

Question

I have two models Plan and Student::Plan. When calling Student::Plan.create! in my seeds.rb file I get back a Plan object. It seems as though rails is getting confused by the namespacing or something. Any thoughts that don't involve renaming the class?

file structure

models
  plan.rb
  student
    plan.rb

tables

plans
student_plans

Update

This gets even weirder when testing w/ rails c. If you call Student::Plan.create! first then you'll get the expected object back. If you instead call Plan.create! and then Student::Plan.create! you'll be back a Plan object instead of what you'd actually expect.

Works

Student::Plan.create # <Student::Plan...>

Doesn't Work

Plan.create # <Plan...>
Student::Plan.create # <Plan...>

Does Student::Plan inherit from Plan? Are you referencing Plan within the Student module before Student::Plan is properly loaded? Calling these both Plan is trouble. — tadman
– tadman, Commented Jun 11, 2013 at 16:40
It seems like you're getting problems from Rails' autoloading of classes. Some possible solutions: 1. Move Student::Plan to lib. 2. place require 'student/plan' where you need to reference Student::Plan. — Kenrick Chien
– Kenrick Chien, Commented Jun 11, 2013 at 16:40
You may need models/student.rb to define module Student see: stackoverflow.com/questions/9712468/… and wondible.com/2011/12/23/… — patrickmcgraw
– patrickmcgraw, Commented Jun 11, 2013 at 16:54

ar3 · Accepted Answer · 2013-06-11 20:44:05Z

1

I can imagine a scenario where you have namespaced models (I've used it a few times...usually for integrating different db's). And this answer doesn't get to the issue of dealing with namespacing issues, but I do think the "Judo" solution is to just create a model called student_plan.rb at the root of the models directory, and use StudentPlan.create and Plan.create respectively.

answered Jun 11, 2013 at 20:44

ar3

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