66 lines
1.7 KiB
Elixir
66 lines
1.7 KiB
Elixir
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defmodule Eventos.Groups.Group.TitleSlug do
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alias Eventos.Groups.Group
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import Ecto.Query
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alias Eventos.Repo
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use EctoAutoslugField.Slug, from: :title, to: :slug
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def build_slug(sources, changeset) do
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slug = super(sources, changeset)
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build_unique_slug(slug, changeset)
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end
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defp build_unique_slug(slug, changeset) do
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query = from g in Group,
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where: g.slug == ^slug
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case Repo.one(query) do
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nil -> slug
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_story ->
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slug
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|> increment_slug
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|> build_unique_slug(changeset)
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end
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end
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defp increment_slug(slug) do
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case List.pop_at(String.split(slug, "-"), -1) do
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{nil, _} ->
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slug
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{suffix, slug_parts} ->
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case Integer.parse(suffix) do
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{id, _} -> Enum.join(slug_parts, "-") <> "-" <> Integer.to_string(id + 1)
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:error -> slug <> "-1"
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end
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end
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end
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end
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defmodule Eventos.Groups.Group do
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use Ecto.Schema
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import Ecto.Changeset
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alias Eventos.Groups.{Group, Member, Request}
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alias Eventos.Accounts.Account
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alias Eventos.Groups.Group.TitleSlug
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schema "groups" do
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field :description, :string
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field :suspended, :boolean, default: false
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field :title, :string
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field :slug, TitleSlug.Type
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field :uri, :string
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field :url, :string
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many_to_many :accounts, Account, join_through: Member
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has_many :requests, Request
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timestamps()
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end
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@doc false
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def changeset(%Group{} = group, attrs) do
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group
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|> cast(attrs, [:title, :description, :suspended, :url, :uri])
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|> validate_required([:title, :description, :suspended, :url, :uri])
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|> TitleSlug.maybe_generate_slug()
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|> TitleSlug.unique_constraint()
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end
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end
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