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Useful package for dealing with user authentication and signup
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lib/guard/models/device.ex
defmodule Guard.Device do
@moduledoc false
use Ecto.Schema
import Ecto.Changeset
@primary_key {:id, :binary_id, autogenerate: true}
@derive {Jason.Encoder,
only: [:id, :token, :platform, :user_id, :last_sent, :inserted_at, :updated_at]}
@derive {Poison.Encoder,
only: [:id, :token, :platform, :user_id, :last_sent, :inserted_at, :updated_at]}
schema "devices" do
field(:token, :string)
field(:platform, :string)
field(:user_id, :binary_id)
field(:last_sent, :utc_datetime)
timestamps()
end
@required_fields ~w(token platform)a
@optional_fields ~w(user_id last_sent)a
@doc """
Creates a changeset based on the `model` and `params`.
If no params are provided, an invalid changeset is returned
with no validation performed.
"""
def changeset(model, params) do
model
|> cast(params, @required_fields ++ @optional_fields)
|> validate_required(@required_fields)
end
end