Select specific option in f.select helper rails



1. If you used  options_for_select in your f.select  helper, then selected will work like this 

= f.select :country_id, options_for_select(@countries.collect{|c|[c.name, c.id]}, {selected: @hotel.country_id}), {include_blank: true}

2. Otherwise use this

= f.select :city_id, @cities.collect{|c| [c.name, c.id] }, { selected:  @hotel.city_id, include_blank: true}
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