Rails 3.2助手或范围

Question

I'm still wading through Rails, picking up as much as I can.

I have the following associations set up:

Outlet **has_many** Monitorings  
Monitoring **belongs_to** Outlets

If I was in a dashboard_controller.rb , and I had the following loop:

@revoked_outlet = Outlet.where(:revoked => true)

And then in the view, I'm looping through each outlet. However, in the same loop I want to grab the most recent monitoring where :was_revoked => true .

How would I do this according to conventions?

Answer 1

In your view, try this:

<% @revoked_outlet.each do |outlet| %>
  <%= outlet.monitorings.where("was_revoked = true").order(:created_at).last %>
<% end %>

Good luck

Answer 2

To follow up on @Anil's answer:

• monitorings , trailing s
• I'd suggest to make .where("was_revoked = true").order(:created_at) a scope on Monitoring