midas

def registration_changeset(user \\ %__MODULE__{}, attrs) do
  user
  |> cast(attrs, ~w(email password password_confirmation)a
  |> validate_required(~w(email password password_confimation)a)
  |> generate_identifier()
end

def profile_update_changeset(user, attrs) do
  user
  |> cast(attrs, ~w(email name)a

midas

def changeset(struct \\ %__MODULE__{}, attrs) do
  user
  |> cast(attrs, ~w(email password password_confirmation)a
  |> validate_required(~w(email password password_confimation)a)
  |> generate_identifier()
end
  
defp generate_identifier(changeset) do
  identifier = UUID.uuid1()
  Ecto.Changeset.put_change(changeset, :identifier, identifier) 

midas

def insert_changeset(user \\ %__MODULE__{}, attrs) do
  user
  |> cast(attrs, ~w(email password password_confirmation)a
  |> validate_required(~w(email password password_confimation)a)
  |> generate_identifier()
end

def update_changeset(user, attrs) do
  user
  |> cast(attrs, ~w(email name)a)

midas

defmodule User do
  ...
  @always_required ~w(email encrypted_password)a
  @password_reset_allowed ~w(password new_password new_password_confirmation)a
  @password_reset_required @always_required + ~w(password new_password)a
  
  def password_reset_changeset(user, attrs) do
    user
    |> cast(atrs, @password_reset_allowed)
    |> validate_required(@password_reset_required)

midas

def SomeClass
  # do something
end

midas

class AppSubdomain

  def self.matches?( request )                                                                                                                                                                                                                                                                                                
    request.subdomain == 'app'
  end 

end