Why doesn't update work in PG?

Question

PostgreSQL

Given:
ruby ​​2.1.0p0 (2013-12-25 revision 44422) [x86_64-linux]
rails (4.0.0)
activemodel (4.0.0)
activerecord (4.0.0)
DB: PG
Code available:
Routes:

resources :subscribers do
   collection do
      post :update_last_login
   end
end

controller:

def update_last_login
   @subscriber = Subscriber.where( "email = ?",params[:email] ).first
   @subscriber.last_login_at = Time.now
   @subscriber.save
end

1ms) COMMIT This does not update the last_login_at field. Where to dig? Thanks in advance for your reply.

Answer 1

And updated_at is updated?
Suspicious commas after Wed:
SQL (0.9ms) UPDATE "subscribers" SET "last_login_at" = $1, "updated_at" = $2 WHERE "subscribers"."id" = 65307 In
general, the date format is strange. I tried updating updated_at with Time.now:
SQL (0.6ms) UPDATE "sellers" SET "updated_at" = $1 WHERE "sellers"."id" = 1