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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/multiple_of.ex
defprotocol Zoi.Validations.MultipleOf do
@moduledoc false
@fallback_to_any true
@doc """
Sets the multiple_of constraint value on the schema.
The value must be a positive number that the input must be divisible by.
Custom error messages can be passed via opts[:error].
"""
@spec set(Zoi.schema(), term(), Zoi.options()) :: Zoi.schema()
def set(schema, value, opts)
@doc """
Validates input is a multiple of the given value.
The value is passed explicitly, not read from the schema.
Used by both field-based validation and :validation effects.
"""
@spec validate(Zoi.schema(), Zoi.input(), term(), Zoi.options()) ::
:ok | {:error, Zoi.Error.t()}
def validate(schema, input, value, opts)
end
defimpl Zoi.Validations.MultipleOf, for: Any do
def set(schema, value, opts) do
Zoi.refine(schema, {Zoi.Validations.MultipleOf, :validate, [value, opts]})
end
def validate(_schema, _input, _value, _opts), do: :ok
end