wintermeyer
How to validate that a belongs_to exists?
I have a Product which belongs_to a Category. How can I validate that the field category_id is not nil and how can I validate that there is a Category with that id?
defmodule App.Shop.Product do
use Ash.Resource, data_layer: Ash.DataLayer.Ets
attributes do
uuid_primary_key :id
attribute :name, :string
attribute :price, :decimal
end
relationships do
belongs_to :category, App.Shop.Category do
attribute_writable? true
end
end
actions do
defaults [:create, :read, :update, :destroy]
end
end
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zachdaniel
Creator of Ash
Also, if you use manage_relationship it will do this automatically.
1
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