Activeadmin save value from checkbox as boolean

Question

I want to save value from my checkbox's form as boolean, but i have got an array

Chunk of my log "important"=>[""]

or if i checked it

"important"=>["", "true"]

my table

t.boolean :important, :default => false

my form

f.input :important, :as => :check_boxes, collection: [true]

How to fix it?

i think problem in my form's input

Answer 1

Use

f.input :important, as: :boolean

Instead.

EDIT

as: check_boxes is meant for collections (selecting many values from a collection).