How do I use serialize for an array attribute in a class using ActiveModel::Model?

Asked Nov 24 '15 at 16:04

Active Nov 24 '15 at 16:04

Viewed 354 times

I'm using a tableless model to create a form. I want to set one of the model attributes as an array

I know the following code doesn't work, but just showing what I want to do:

Model:

class Quote
  include ActiveModel::Model
  include ActiveModel::Serialization

  attr_accessor :name, :length, :width, :city
  serialize :quantity, Array
end

Then reference in the form using:

f.text_field :quantity, multiple: true, class: 'form-control', type: 'number'
f.text_field :quantity, multiple: true, class: 'form-control', type: 'number'

How can I go about achieving this? Thank you.

asked Nov 24 '15 at 16:04

massaskillz

can you not just add it to attr_accessor list and let the magic work? – Yule Nov 24 '15 at 16:19
When I added it to attr_accessor and submit the form, @quote.quantity returns nil. Perhaps I'm doing something else wrong? – massaskillz Nov 24 '15 at 16:22
I think you could also take a look at Virtus gem: https://github.com/solnic/virtus – bo-oz Nov 24 '15 at 16:32
1

@massaskillz Are your params setup properly? I think you need to permit an array like so: `params.require(:quote).permit(:name, :length, :width, :city, :quantity => []`. – Bryan Dimas Nov 24 '15 at 18:03
@BryanDimas thank you! That worked out for me. – massaskillz Nov 24 '15 at 19:17

How do I use serialize for an array attribute in a class using ActiveModel::Model?

0 Answers0