concatenatenation of slug and id with rails link_to

Question

I have following link_to sub_category is a slug title(generated by friendly_id) stored in my db table

How can i have the id: with slug and the id as well. I have tried something like this but it is a syntax error.

<%= link_to sub_category.name, controller: :posts, action: :product, id: sub_category."#{id}" %>

How can i solve it

Answer 1

尝试这个 ：

<%= link_to sub_category.name, controller: :posts, action: :product, id: sub_category.send("#{id}") %>

Answer 2

why not sub_category.id ? instead of sub_category."#{id}"