nested resources in rails 3

Question

My routes file is:

resources :countries do
  resources :regions do 
    resources :appartments
  end
end

models:

Country: has_many :regions

Region: belongs_to :country, has_many :appartments

Appartment: belongs_to: region

Region_controller:

def index
  @country = Country.find(params[:country_id])
  @regions = @country.regions
end


def show
  @country = Country.find(params[:country_id])
  @region = @country.regions.find(params[:id])
end

Question:

I want to show appartments on the region page. What's the best practice in my region controller?

Feel free to ignore my edit, @apneadiving got to it before I did. Do you want to show apartments that belong to the region being viewed? — Devin M
– Devin M, Commented Aug 5, 2011 at 21:20

apneadiving · Accepted Answer · 2011-08-05 21:20:25Z

2

It would simply be:

@appartments = @region.appartments

answered Aug 5, 2011 at 21:20

apneadiving

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Comments

rookieRailer · Accepted Answer · 2011-08-05 21:38:58Z

1

If all you want to do is to show apartments within the regions show page, do the following:

create an instance variable in the regions show action as:

@appartments = @regions.appartments
create a partial _appartments.html.erb in the views/regions folder
Somewhere within the regions/show.html.erb page, place this:

<%= render @appartments %>

This should do the trick.

edited Aug 5, 2011 at 21:38

answered Aug 5, 2011 at 21:26

rookieRailer

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7 Comments

rookieRailer Over a year ago

@apneadiving Thanks for the edit, I went with my intuition and wrote apartments.

rookieRailer Over a year ago

I think you created the partial with name appartment, it should be appartments. I hope it works.

Remco Over a year ago

partial created: <% @country.region.appartments.each do |appartment| %> <p> <%= link_to appartment.item.name %></td> </p> <% end %> but i got the message "undefined method `region' for #<Country:0x200272c>" What i am doing wrong?

rookieRailer Over a year ago

Your Country model has_many countries, not one country. Hence, you need to iterate through the array of regions. This is what you need to do: <%= @country.regions.each do |region| %> <%= region.appartments.each do |apt| %> <%= link_to apt.item.name %> <% end %> <% end %>. Did that appartments partial not work? It should work. Did you change the partial name from _apartment.html.erb to _apartments.html.erb ?

Remco Over a year ago

It is working now.thanks!.....appartments.each do |appartment| <%= link_to appartment.item_name, country_region_appartment_url(@country, @region, appartment)...but the record is printed 2 times! is my each loop not correct?

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