CODEWITHSUNDEEP
ruby-on-railsrubyblock
Darcbar
Darcbar

Reputation: 888

get specific element from ruby block, rails app

When performing a block like:

<% @user.favoured_user.each do |user| %>

  <li><%= user.name  %></li>

<% end %>

With the favoured_user method returning a limit of 5 users, how would I manipulate the block so that even when there are only 3 users available, I could still return 5 li elements?

I'm guessing a helper would come in to play, and maybe the 'first, second, third, etc.' array methods, but I can't think how to write it.

Any help?

Upvotes: 1

Views: 109

Answers (2)

Rob Di Marco
Rob Di Marco

Reputation: 44962

You can use in_groups_of

Like:

<% @user.favoured_user.in_groups_of(5).each do |favored_user| %>
  <% favored_user.each do |user| %>
    <li><%= user.try(:name)  %></li>
  <% end %>
<% end %>

The first 3 users will come through, and the last two entries will be nil

Upvotes: 1

Rishav Rastogi
Rishav Rastogi

Reputation: 15492

You can try this, 

<% 5.times do |i| %>
     <li> <%= @user.favoured_user[i].try(:name) %> </li>
<% end %>

Upvotes: 2

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