Can sunspot-solr filter_by nested attributes?

Let's say I have People, and People has_many Watermelon .

I have a filter_by that can work for People attributes, for example :

:filter_by => 'has_eaten_today'
开发者_运维问答

But can I do a :filter_by for the nested attribute of Watermelon? For example :

:filter_by => 'watermelons.created_at'

Thanks!

This question came from me not really understanding Sunspot-solr, but its quite easy.

Just target the nested attributes from your model :

def watermelon_time
  self.watermelon.created_at
end

Then add that to

searchable do
  time :watermelon_time
..

Then my controller :

query.with(:watermelon_time).equal_to(params[:filter_by] == 'watermelon_time' ? 'true' : false) if params[:filter_by]

Extra Bonus :

Added a link to write this functionality in my :

= link_to 'Watermelon Time', url_for(:overwrite_params => { :filter_by => 'watermelon_time', :page => nil })

Bon Appetite!