Ransack Gem Rails and multiselect

Question

I am using the ransack gem for my rails app and have a problem with multiselect. I have a job and a company model, a company has many jobs, a job belongs to a company. I want to perform a search on jobs so people can see jobs from specific companies, I have done some research and apparently this should work in the search form:

= search_form_for @q do |f|
  = f.collection_select :company_name_cont, Company.all, :id, :name, {:multiple => true}, class: 'chosen-it'
  = f.submit "search"

So in the view I get the list (with autocomplete from the chosen gem) but when I click on search it returns no result and I can't select multiple companies.

However, when I use a search field instead like this:

= f.search_field :company_name_cont

The search works.

Could you help me guys

Thanks a lot

Answer 1

You should use company_name_in instead of company_name_cont :

= f.collection_select :company_name_in, Company.all, :id, :name, {}, {:multiple => true}

More info can be found in ransack's wiki here: https://github.com/activerecord-hackery/ransack/wiki/Basic-Searching#in

Answer 2

In general, we can write this as

= f.collection_select :some_id_in, Model.all, :id, :name, {}, {:multiple => true}

where some_id is a model attribute for which we have multiple select value for filter.