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zoi
0.17.0
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0.1.0
Zoi is a schema validation library for Elixir, designed to provide a simple and flexible way to define and validate data.
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lib/zoi/validations/length.ex
defprotocol Zoi.Validations.Length do
@moduledoc false
@fallback_to_any true
@doc """
Sets the exact length constraint value on the schema.
Implementations should ensure the constraint stays mutually exclusive with other length bounds.
Custom error messages can be passed via opts[:error].
"""
@spec set(Zoi.schema(), non_neg_integer(), Zoi.options()) :: Zoi.schema()
def set(schema, value, opts)
@doc """
Validates the input against the constraint value.
The value is passed explicitly rather than read from the schema.
"""
@spec validate(Zoi.schema(), Zoi.input(), term(), Zoi.options()) ::
:ok | {:error, Zoi.Error.t()}
def validate(schema, input, value, opts)
end
defimpl Zoi.Validations.Length, for: Any do
def set(schema, value, opts) do
Zoi.refine(schema, {Zoi.Validations.Length, :validate, [value, opts]})
end
def validate(_schema, _input, _value, _opts), do: :ok
end