Question

Rails can render partial collection with counter:

= render partial: 'item', collection: @items

inside _item.html, rails provides iteration counter for the items. (here)

= item_counter

How to make an alias for item_counter e.g. partial_counter? Or anything that will make it become more DRY? It’s quite ineffisient writing item_counter, product_counter, category_counter, user_counter, .... thx

Answer 1

= render partial: 'item', collection: @items, as: 'item'

UPDATED: Alias counter only:
Unfortunately there is no any other Rails’ ways to do what you looking for. You have to define new local variable and assign counter value in all partials by hands:

<% counter = local_assigns.detect {|var, value| var.match(/_counter\z/)}.last %>

<%= counter %>