#helpers

pow_create_update_iex.md

• How to setup Pow to create a user with a 20 character random string as password
• Also how to reset a users password
• Both actions done using the IEx console
• The docs: https://hexdocs.pm/pow/Pow.Ecto.Schema.html#module-customize-pow-changeset

defmodule Finance.Schemas.User do
  @moduledoc """
  The location of this schema has changed from the default placement upon
  installation (`mix pow.install`). If using the Pow library docs to make any
  changes, a reference to `Finance.Users.User` should be replaced with
  `Finance.Schemas.User`
  """

  use Finance.Schema
  use Pow.Ecto.Schema

  @generate_password_length 20

  schema "users" do
    pow_user_fields()

    timestamps()
  end

  def create_changeset(user \\ %__MODULE__{}, attrs) do
    user
    |> pow_user_id_field_changeset(attrs)
    |> generate_password_changeset()
  end

  def generate_password_changeset(user \\ %__MODULE__{}) do
    # source of password generator: https://stackoverflow.com/a/41735582/154703
    password =
      :crypto.strong_rand_bytes(@generate_password_length)
      |> Base.encode64()
      |> binary_part(0, @generate_password_length)

    user
    |> pow_password_changeset(%{
      password: password,
      password_confirmation: password
    })
  end
end

The IEx scripts

• Create:

  %{email: "[email protected]"} |> Finance.Schemas.User.create_changeset() |> Finance.Repo.insert!()
  

• Update:

  Finance.Schemas.User |> Finance.Repo.get_by!(email: "[email protected]") |> Finance.Schemas.User.generate_password_changeset() |> Finance.Repo.update()