defmodule Eventos.Events.Event.TitleSlug do @moduledoc """ Generates a slug for an event title """ alias Eventos.Events.Event import Ecto.Query alias Eventos.Repo use EctoAutoslugField.Slug, from: :title, to: :slug def build_slug(sources, changeset) do slug = super(sources, changeset) build_unique_slug(slug, changeset) end defp build_unique_slug(slug, changeset) do query = from e in Event, where: e.slug == ^slug case Repo.one(query) do nil -> slug _event -> slug |> Eventos.Slug.increment_slug() |> build_unique_slug(changeset) end end end defmodule Eventos.Events.Event do @moduledoc """ Represents an event """ use Ecto.Schema import Ecto.Changeset alias Eventos.Events.{Event, Participant, Request, Tag, Category, Session, Track} alias Eventos.Events.Event.TitleSlug alias Eventos.Actors.Actor alias Eventos.Addresses.Address schema "events" do field :url, :string field :local, :boolean, default: true field :begins_on, Timex.Ecto.DateTimeWithTimezone field :description, :string field :ends_on, Timex.Ecto.DateTimeWithTimezone field :title, :string field :slug, TitleSlug.Type field :state, :integer, default: 0 field :status, :integer, default: 0 field :public, :boolean, default: true field :thumbnail, :string field :large_image, :string field :publish_at, Timex.Ecto.DateTimeWithTimezone belongs_to :organizer_actor, Actor, [foreign_key: :organizer_actor_id] many_to_many :tags, Tag, join_through: "events_tags" belongs_to :category, Category many_to_many :participants, Actor, join_through: Participant has_many :event_request, Request has_many :tracks, Track has_many :sessions, Session belongs_to :address, Address timestamps(type: :utc_datetime) end @doc false def changeset(%Event{} = event, attrs) do event |> cast(attrs, [:title, :description, :url, :begins_on, :ends_on, :organizer_actor_id, :category_id, :state, :status, :public, :thumbnail, :large_image, :publish_at]) |> cast_assoc(:tags) |> cast_assoc(:address) |> validate_required([:title, :description, :begins_on, :ends_on, :organizer_actor_id, :category_id]) |> TitleSlug.maybe_generate_slug() |> TitleSlug.unique_constraint() end end