link_to when using STI --> undefined method `animal_path'

rubyonrails-talk
1

hi,

im getting started with STI but having trouble with link_to

Model Animal

including an type column

  1. routes:

resource :animal

resources :tiger , :controller => ‘animals’, type: ‘tigler’

resources :lion , :controller => ‘animals’, type: ‘lion’

  1. index.html

link_to ‘show’, animal >>undefined method `animal_path’

what is the correct way without hacking through classes and rewriting url helpers etc?

thx

2

animal_path won't work because you've commented out resource :animal (which should be plural anyway, as should the others).

3

its just pseudo-code.

but if i leave the base resource in there, then it give me an /animal/id route which i dont want. i want either /tiger/id or lion/id

thx

4

Then you need to know whether your animal is a tiger or lion (or bear of course), and call the appropriate path helper. That kind of messiness is exactly what inheritance (and other forms of polymorphism) are great at solving.

5

correct. i am experimenting with polymorphic_path(resource) and eg polymorphic_url([blog, post]), but so far im not getting the result i want. i am having separate files and inherited models and also inherited controllers (those dont have eny defined actions yet)…but no go…