how rails “update” multiple columns correctly - (updated_at should be updated as well)

Question

I am having trouble updating multiple columns properly with rails activerecords. I want to use something like update which basically gets updated_at updated, but i just cant pas

Answer 1

When you mention you want to update multiple columns - I presume this would be for a single record?

---

This line will update a collection response (.where returns a collection rather than single object):

retval = Invoice.where(:id => @invoice.id).update_all(:payment_total => 20, 
                                                     :due_amount => 10, 
                                                     :data => clonedata.to_json)

---

If you're looking to update a single record, I would use the update method like this:

@invoice = Invoice.update(params[id], payment_total: "20", due_amount: "10", data: clonedata.to_json)