user.ex

defmodule Webcamery.User do
  use Webcamery.Web, :model

  schema "users" do
    field :email, :string
    field :password, :string, virtual: true
    field :password_hash, :string

    timestamps
  end

  @required_fields ~w(email)
  @optional_fields ~w(password)

  def changeset(model, params \\ :empty) do
    model
    |> cast(params, @required_fields, @optional_fields)
    |> put_password_hash
  end

  defp put_password_hash(%Ecto.Changeset{valid?: true, changes: %{password: pass}} = changeset) do
    put_change(
      changeset,
      :password_hash,
      hashed_password(pass)
    )
  end
  defp put_password_hash(changeset) do
    changeset
  end

  defp hashed_password(password) do
    Comeonin.Bcrypt.hashpwsalt(password)
  end

end