[SOLVED] When Ecto.Changeset action is set?

When you pass the changeset to one of the Repo functions.

You mean: delete(!), insert(!) and update(!), right?
I want to have it set in changeset model function (before affect database) and perform some actions (in cond do statement).
Is it possible? Or I need set it manually? Or maybe one more parameter in changeset function for cond do statement is better solution?

I’m not sure that’s the right approach - why not create multiple changeset functions?

def create_changeset(schema, params) do
  schema
  |> common_changeset(params)
  |> create_specific_operations
end

def update_changeset(schema, params) do
  schema
  |> common_changeset(params)
  |> update_specific_operations
end

def common_changeset(schema, params) do
  # ...
end

ok, thx for your support, that is really helpful