Specs

changeset_field_empty?(Ecto.Changeset.t(), atom()) :: boolean()

Checks if field on changeset is empty list in data or changes

Specs

changeset_field_nil?(Ecto.Changeset.t(), atom()) :: boolean()

Checks if field on changeset is nil in data or changes

Specs

preload_change_assoc(Ecto.Changeset.t(), atom()) :: Ecto.Changeset.t()

Specs

preload_change_assoc(Ecto.Changeset.t(), atom(), keyword()) ::
  Ecto.Changeset.t()

This function is the primary use function Preloads changeset assoc if change is made and then and put_or_cast's it

example

Example

iex> CommonChanges.preload_change_assoc(changeset, :my_relation) iex> CommonChanges.preload_change_assoc(changeset, :my_relation, repo: MyApp.OtherRepo) iex> CommonChanges.preload_change_assoc(changeset, :my_relation, required: true) iex> CommonChanges.preload_change_assoc(changeset, :my_relation, required_when_missing: :my_relation_id)

Specs

preload_changeset_assoc(Ecto.Changeset.t(), atom(), keyword()) ::
  Ecto.Changeset.t()

Preloads a changesets association

Specs

put_or_cast_assoc(Ecto.Changeset.t(), atom(), Keyword.t()) :: Ecto.Changeset.t()

Determines put or cast on association with some special magic

If you pass a many to many relation only a list of id's it will count that as a member_update and remove or add members to the relations list

E.G. User many_to_many Fruit

This would update the user to have only fruits with id 1 and 3

CommonChanges.put_or_cast_assoc(change(user, fruits: [%{id: 1}, %{id: 3}]), :fruits)

Specs

put_when(
  Ecto.Changeset.t(),
  (Ecto.Changeset.t() -> boolean()),
  (Ecto.Changeset.t() -> Ecto.Changeset.t())
) :: Ecto.Changeset.t()

Run's changeset function if when function returns true