CODEWITHSUNDEEP
ruby-on-railsruby-on-rails-4
Harsha M V
Harsha M V

Reputation: 54949

Rails 4 updating Object content with out saving

I am preparing the Object variables before i start saving the details into the Database.

I have 3 objects i need to save order, order_event, message

I have instanciated the object order_event and want to update the order parameters before i save to the database

@order_event = OrderEvent.new(order_event_params)
    @order_event.update_attributes(event_date: @event.event_date)

But Rails is trying to save it to the Database and throwing the following error

Mysql2::Error: Field 'order_id' doesn't have a default value: INSERT INTO `order_events` (`created_at`, `event_date`, `event_id`, `no_of_ppl`, `updated_at`) VALUES ('2015-04-17 10:20:11', '2015-01-22 00:00:00', 2, 1, '2015-04-17 10:20:11')

My Model

--- !ruby/object:OrderEvent
attributes:
  id: 
  order_id: 
  event_id: 2
  no_of_ppl: 3
  event_date: 
  cost: 
  total_cost: 
  status: 
  created_at: 
  updated_at:

I want to update event_date, cost, total_cost etc before saving.

Upvotes: 0

Views: 37

Answers (2)

Liyali
Liyali

Reputation: 5693

You can assign the value to your params hash and then update:

@order_event = OrderEvent.find(params[:id])
params[:order_event][:event_date] = @event.event_date
if @order_event.update_attributes(order_event_params)
    ...

Upvotes: 1

lx00st
lx00st

Reputation: 1596

Use assign_attributes for assigning params instead of update_attributes (it persists them)

Upvotes: 1

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