I'm trying to cache the following:
<% @equipment.sports.zip(@equipment.sport_equipments).each_with_index do |(sport, equipment), index| %>
<% cache[cache_version_tool, equipment.cache_key, sport.cache_key, index] do %>
<%= render 'sport', sport: sport, equipment: equipment, cached: true %>
<% end %>
<% end %>
The block works fine with out cache but when I had it I receive:
ActionView::Template::Error (no block given (yield)):
How do I pass the each_with_index block to the cache?
It has nothing to do with the each_with_index. You are calling the cache method wrong.
Your call of
cache[cache_version_tool, equipment.cache_key, sport.cache_key, index] do
gets translated to
cache().[](cache_version_tool, equipment.cache_key, sport.cache_key, index) do
cache() receives no arguments and does not receive a block. Inside it checks for cache with no arguments (which obviously does not exist) and then calls yield. Since cache() did not receive a block (the [] access did), then it raises an error of no block given (yield).
Add a space between cache and [
cache [cache_version_tool, equipment.cache_key, sport.cache_key, index] do
Now it gets interpreted as
cache([cache_version_tool, equipment.cache_key, sport.cache_key, index]) do
And everything should work.
Or better yet, add the parentheses for clarity.