How to display form elements when using shallow nesting in rails?

Question

I'm using shallow nesting in Rails, similar to the example here

My routes.rb is configured with:

  resources :applications do
    resources :domains, shallow: true
  end

I have used rails scaffold to generate both models and associations, in order to add new domain to application, I can get there via

option #1

   /domains/new

option #2 via its parent resource

   /applications/:application_id/domains/new

Currently the form displays drop down to associate domain with its parent upon creation.

How can I hide this dropdown menu option if user get to the form via option 2 and display if if user get to the form via option 1?

Your thoughts is highly appreciated.

Thanks

Inpego · Accepted Answer · 2016-01-06 03:26:59Z

2

Just check params[:application_id]:

<%= render 'menu' if params[:application_id].blank? %>

answered Jan 6, 2016 at 3:26

Inpego

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Comments

Yang · Accepted Answer · 2016-01-06 05:24:56Z

2

I think you can check if the parameter application_id is nil and set it in a hidden field if it is not nil coming from option #1.

Code example:

<%if params[:application_id].nil? %>
  display your dropdown here
<%else%>
  <%= f.hidden_field :application_id, :value => params[:application_id] %>
<%end%>

answered Jan 6, 2016 at 5:24

Yang

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