How Can I permit nested attributes with active model serializer? - ruby-on-rails

Question

I'm using active_model_serializers from an api in ruby on rails, and I have a controller method in which i save an invoice and its nested items with some calculations, the problem is that after include serializer, the nested attributes are restricted and I can't access to them.
I have the code in this way according to some documentation, but it doesn't works
#Controller
def invoice_params
params.require(:invoice).permit(:person_id, :date, sales_attributes: [:reference_id, :quantity, :price])
end
#Model
class Invoice < ApplicationRecord
belongs_to :person
has_many :sales
accepts_nested_attributes_for :sales, allow_destroy: true
end
#Serializer
class InvoiceSerializer < ActiveModel::Serializer
attributes :id, :date, :total, :profit, :consecutive, :person_id
has_many :sales, root: :sales_attributes
belongs_to :person
end
The json request that I'm sending is:
{
"person_id": 4,
"date": "2019-03-20",
"sales": [
{
"reference_id":1,
"quantity": 90000,
"price": 240
},
{
"reference_id":1,
"quantity": 50000,
"price": 240
}
]
}
Some one knows what happen?, before of include the serializer gem it was working fine.
Thanks in advance!

Answer 1

change
def invoice_params
params.require(:invoice).permit(:person_id, :date, sales_attributes: [:reference_id, :quantity, :price])
end
to
def invoice_params
params.require(:invoice).permit(:person_id, :date, sales_attributes: [:id, :reference_id, :quantity, :price])
end
and
{
"person_id": 4,
"date": "2019-03-20",
"sales": [
{
"reference_id":1,
"quantity": 90000,
"price": 240
},
{
"reference_id":1,
"quantity": 50000,
"price": 240
}
]
}
to
{
"person_id": 4,
"date": "2019-03-20",
"sales_attributes": [
{
"reference_id":1,
"quantity": 90000,
"price": 240
},
{
"reference_id":1,
"quantity": 50000,
"price": 240
}
]
}