How can I have ActiveRecord's pluck also return the column name for rendering in json?

Question

def jsontest
   @users = User.all.limit(10)
   render json: @users
end

yields

{
...

\"id\": 7,
\"name\": \"Sage Smith\",
\"email\"         


        

Answer 1

Created a simple pluck_to_hash gem to achieve this. https://github.com/girishso/pluck_to_hash

Usage example..

Post.limit(2).pluck_to_hash([:id, :title])
#
# [{:id=>213, :title=>"foo"}, {:id=>214, :title=>"bar"}]
#

Post.limit(2).pluck_to_hash(:id)
#
# [{:id=>213}, {:id=>214}]
#

# Or use the shorter alias pluck_h

Post.limit(2).pluck_h(:id)
#
# [{:id=>213}, {:id=>214}]
#