View Source Ash.Resource.Validation behaviour (ash v2.17.0)

Represents a validation in Ash.

See Ash.Resource.Validation.Builtins for a list of builtin validations.

To write your own validation, define a module that implements the init/1 callback to validate options at compile time, and validate/2 callback to do the validation.

Then, in a resource, you can say:

validations do
  validate {MyValidation, [foo: :bar]}
end

Summary

Types

path()
ref()
t()

Callbacks

atomic?(t)
describe(t)
init(t)
validate(t, t)

Functions

action_schema()
opt_schema()
validation_type()

Types

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path()

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@type path() :: [atom() | integer()]
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ref()

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@type ref() :: {module(), Keyword.t()} | module()
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t()

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@type t() :: %Ash.Resource.Validation{
  before_action?: term(),
  description: String.t() | nil,
  message: term(),
  module: atom(),
  on: [atom()],
  only_when_valid?: boolean(),
  opts: [atom()],
  validation: {atom(), [atom()]},
  where: [{atom(), [atom()]}]
}

Callbacks

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atomic?(t)

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@callback atomic?(Keyword.t()) :: boolean()
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describe(t)

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@callback describe(Keyword.t()) :: String.t() | [message: String.t(), vars: Keyword.t()]
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init(t)

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@callback init(Keyword.t()) :: {:ok, Keyword.t()} | {:error, String.t()}
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validate(t, t)

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@callback validate(Ash.Changeset.t(), Keyword.t()) :: :ok | {:error, term()}

Functions

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action_schema()

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opt_schema()

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validation_type()

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