Returns an %Ecto.Changeset{} for tracking app changes.

Examples

iex> change_app(app)
%Ecto.Changeset{source: %App{}}

Creates a app.

Examples

iex> create_app(%{field: value})
{:ok, %App{}}

iex> create_app(%{field: bad_value})
{:error, %Ecto.Changeset{}}

Deletes a app.

Examples

iex> delete_app(app)
{:ok, %App{}}

iex> delete_app(app)
{:error, %Ecto.Changeset{}}

Gets a single app.

Raises Ecto.NoResultsError if the App does not exist.

Examples

iex> get_app!(123)
%App{}

iex> get_app!(456)
** (Ecto.NoResultsError)

Returns the list of apps.

Examples

iex> list_apps()
[%App{}, ...]

Updates a app.

Examples

iex> update_app(app, %{field: new_value})
{:ok, %App{}}

iex> update_app(app, %{field: bad_value})
{:error, %Ecto.Changeset{}}