It is a helper only, to make it easy to display a list of chats with other people, ordered by last bump. The actual messages are retrieved by querying the recipients of the ChatMessages.
"""
+ @primary_key {:id, FlakeId.Ecto.CompatType, autogenerate: true}
+
schema "chats" do
belongs_to(:user, User, type: FlakeId.Ecto.CompatType)
field(:recipient, :string)
timestamps()
end
- def creation_cng(struct, params) do
+ def changeset(struct, params) do
struct
|> cast(params, [:user_id, :recipient])
|> validate_change(:recipient, fn
def get_or_create(user_id, recipient) do
%__MODULE__{}
- |> creation_cng(%{user_id: user_id, recipient: recipient})
+ |> changeset(%{user_id: user_id, recipient: recipient})
|> Repo.insert(
# Need to set something, otherwise we get nothing back at all
on_conflict: [set: [recipient: recipient]],
def bump_or_create(user_id, recipient) do
%__MODULE__{}
- |> creation_cng(%{user_id: user_id, recipient: recipient})
+ |> changeset(%{user_id: user_id, recipient: recipient})
|> Repo.insert(
on_conflict: [set: [updated_at: NaiveDateTime.utc_now()]],
+ returning: true,
conflict_target: [:user_id, :recipient]
)
end