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

Examples

iex> change_tag(tag)
%Ecto.Changeset{data: %Tag{}}

Creates a tag.

Examples

iex> create_tag(%{field: value})
{:ok, %Tag{}}

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

Deletes a tag.

Examples

iex> delete_tag(tag)
{:ok, %Tag{}}

iex> delete_tag(tag)
{:error, %Ecto.Changeset{}}

Gets a single tag.

Raises Ecto.NoResultsError if the Tag does not exist.

Examples

iex> get_tag!(123)
%Tag{}

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

Returns the list of tag.

Examples

iex> list_tag()
[%Tag{}, ...]

Updates a tag.

Examples

iex> update_tag(tag, %{field: new_value})
{:ok, %Tag{}}

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