CODEWITHSUNDEEP
ruby-on-railssum
noob
noob

Reputation: 1807

undefined method `sum' for 1:Fixnum

<% @user.friendships.each do |f| %>
  <%= f.friend.count %>
<% end %>

This returns a set of numbers 1 2 1 1 3 but when I tried to get the sum of those values , I get this error: undefined method sum for 1:Fixnum. 

<%= f.friend.count.sum %>
<%= f.friend.count.sum(:value) %>
<%= f.friend.count.inject {|sum, x| sum + x} %>

Upvotes: 0

Views: 1839

Answers (1)

Dave S.
Dave S.

Reputation: 6419

I think this is what you're looking for:

<%= @user.friendships.inject(0) {|sum, f| sum + f.friend.count} %>

The important thing to note is that you're calling inject on the friendships collection and incrementing the sum by f.count.

Upvotes: 1

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