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ash_postgres
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0.1.0
The PostgreSQL data layer for Ash Framework
Current section
Files
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Files
lib/reference.ex
defmodule AshPostgres.Reference do
@moduledoc false
defstruct [:relationship, :on_delete, :on_update, :name, ignore?: false]
def schema do
[
relationship: [
type: :atom,
required: true,
doc: "The relationship to be configured"
],
ignore?: [
type: :boolean,
doc:
"If set to true, no reference is created for the given relationship. This is useful if you need to define it in some custom way"
],
on_delete: [
type: {:one_of, [:delete, :nilify, :nothing, :restrict]},
doc: """
What should happen to records of this resource when the referenced record of the *destination* resource is deleted.
The difference between `:nothing` and `:restrict` is subtle and, if you are unsure, choose `:nothing` (the default behavior).
`:restrict` will prevent the deletion from happening *before* the end of the database transaction, whereas `:nothing` allows the
transaction to complete before doing so. This allows for things like deleting the destination row and *then* deleting the source
row.
## Important!
No resource logic is applied with this operation! No authorization rules or validations take place, and no notifications are issued.
This operation happens *directly* in the database.
This option is called `on_delete`, instead of `on_destroy`, because it is hooking into the database level deletion, *not*
a `destroy` action in your resource.
"""
],
on_update: [
type: {:one_of, [:update, :nilify, :nothing, :restrict]},
doc: """
What should happen to records of this resource when the referenced destination_attribute of the *destination* record is update.
The difference between `:nothing` and `:restrict` is subtle and, if you are unsure, choose `:nothing` (the default behavior).
`:restrict` will prevent the deletion from happening *before* the end of the database transaction, whereas `:nothing` allows the
transaction to complete before doing so. This allows for things like updating the destination row and *then* updating the reference
as long as you are in a transaction.
## Important!
No resource logic is applied with this operation! No authorization rules or validations take place, and no notifications are issued.
This operation happens *directly* in the database.
"""
],
name: [
type: :string,
doc:
"The name of the foreign key to generate in the database. Defaults to <table>_<source_attribute>_fkey"
]
]
end
end