@spec bingenerate() :: raw()

Generates a random, version 4 UUID in the binary format.

@spec cast(t() | raw() | any()) :: {:ok, t()} | :error

Casts either a string in the canonical, human-readable UUID format or a 16-byte binary to a UUID in its canonical, human-readable UUID format.

If uuid is neither of these, :error will be returned.

Since both binaries and strings are represented as binaries, this means some strings you may not expect are actually also valid UUIDs in their binary form and so will be casted into their string form.

If you need further-restricted behavior or validation, you should define your own custom Ecto.Type. There is also Ecto.UUID.load/1 if you only want to process raw UUIDs, which may be a more suitable reverse operation to Ecto.UUID.dump/1.

Examples

iex> Ecto.UUID.cast(<<0x60, 0x1D, 0x74, 0xE4, 0xA8, 0xD3, 0x4B, 0x6E,
...>                  0x83, 0x65, 0xED, 0xDB, 0x4C, 0x89, 0x33, 0x27>>)
{:ok, "601d74e4-a8d3-4b6e-8365-eddb4c893327"}

iex> Ecto.UUID.cast("601d74e4-a8d3-4b6e-8365-eddb4c893327")
{:ok, "601d74e4-a8d3-4b6e-8365-eddb4c893327"}

iex> Ecto.UUID.cast("warehouse worker")
{:ok, "77617265-686f-7573-6520-776f726b6572"}

@spec cast!(t() | raw() | any()) :: t()

Same as cast/1 but raises Ecto.CastError on invalid arguments.

@spec dump(uuid_string :: t() | any()) :: {:ok, raw()} | :error

Converts a string representing a UUID into a raw binary.

@spec dump!(t() | any()) :: raw()

Same as dump/1 but raises Ecto.ArgumentError on invalid arguments.

Callback implementation for Ecto.Type.embed_as/1.

Callback implementation for Ecto.Type.equal?/2.

@spec generate() :: t()

Generates a random, version 4 UUID.

@spec load(raw() | any()) :: {:ok, t()} | :error

Converts a binary UUID into a string.

@spec load!(raw() | any()) :: t()

Same as load/1 but raises Ecto.ArgumentError on invalid arguments.