acts_as_taggable_on: how to optimize the query?

Question

I use acts_as_taggable_on in my current Rails project. On one overview page i am displaying an index of objects with their associated tags. I use the following code

Answer 1

Use this:

Post.includes(:tags).all

and then:

post.tags.collect { |t| t.name }

Answer 2

Try

@projects = Project.includes(:categories).all

Answer 3

I agree with Jan Drewniak, huge performance boosted with

Download.includes(:tags).all

and in views:

download.tags.map {|t| link_to t, t.name}.join(', ')

But still too slow.

Any other idea?