Password validations

8961f60effc7-password-validations.ex

defmodule User do
  def changeset(user, attrs) do
    user
    |> cast(attrs, [:password])
    |> validate_length(:password, min: 12)
    |> validate_format(:password, ~r/[a-z]/, message: "at least one lower case character")
    |> validate_format(:password, ~r/[A-Z]/, message: "at least one upper case character")
    |> validate_format(:password, ~r/[!?@#$%^&*_0-9]/, message: "at least one digit or punctuation character")
  end
end