Rails to symbol problems? Error: undefined method `[]' for nil:NilClass -

background info: deal has many coupons (@freedeals contains coupons) , coupon belongs_to deal.

controller:

 @freecoupons = coupon.where(discount: 100).order("created_at desc").page(params[:page])  @deals = deal.all

this code below works want , finds title deal (hard coded in 2 testing purposes)

<% @freecoupons.each |f| %>       <%= @deals[2][:title] %>   <% end %>

but when switch on trying find title of deal based on coupons association through f.deal_id

<% @freecoupons.each |f| %>       <%= @deals[f.deal_id][:title] %>  <% end %>

it gives me error "undefined method `[]' nil:nilclass". not sure i'm missing here. symbol problem i'm missing? appreciated.

in coupon model do

belongs_to :deal

then in controller, include deals using includes - ensure don't make n+1 query:

@free_coupons = coupon.includes(:deal).where(discount: 100).order("created_at desc").page(params[:page])

now in view, can call deal method on coupon instance:

@free_coupons.each |f|   <%= f.deal.title %> end

Jal