2018-10-11 15:37:39 +00:00
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defmodule Mobilizon.Events.Tag do
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2018-01-14 16:56:50 +00:00
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@moduledoc """
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2019-09-12 23:01:17 +00:00
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Represents a tag for events.
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2018-01-14 16:56:50 +00:00
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"""
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2019-09-12 23:01:17 +00:00
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2017-12-08 08:58:14 +00:00
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use Ecto.Schema
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2019-09-12 23:01:17 +00:00
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2017-12-08 08:58:14 +00:00
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import Ecto.Changeset
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2019-09-12 23:01:17 +00:00
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2018-10-11 15:37:39 +00:00
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alias Mobilizon.Events.Tag.TitleSlug
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2019-09-22 14:26:23 +00:00
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alias Mobilizon.Events.TagRelation
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@type t :: %__MODULE__{
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title: String.t(),
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slug: TitleSlug.Type.t(),
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2019-09-12 23:55:45 +00:00
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related_tags: [t]
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2019-09-12 23:01:17 +00:00
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}
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@required_attrs [:title, :slug]
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@attrs @required_attrs
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2017-12-08 08:58:14 +00:00
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schema "tags" do
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2018-07-27 08:45:35 +00:00
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field(:title, :string)
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field(:slug, TitleSlug.Type)
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2019-09-12 23:01:17 +00:00
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2019-09-12 23:55:45 +00:00
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many_to_many(:related_tags, __MODULE__, join_through: TagRelation)
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2017-12-08 08:58:14 +00:00
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timestamps()
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end
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@doc false
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2021-09-24 14:46:42 +00:00
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@spec changeset(t | Ecto.Schema.t(), map) :: Ecto.Changeset.t()
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def changeset(%__MODULE__{} = tag, attrs) do
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tag
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2019-09-12 23:01:17 +00:00
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|> cast(attrs, @attrs)
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2018-01-13 22:33:03 +00:00
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|> TitleSlug.maybe_generate_slug()
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|> validate_required(@required_attrs)
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2018-01-13 22:33:03 +00:00
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|> TitleSlug.unique_constraint()
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2021-04-28 16:18:42 +00:00
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|> validate_length(:title, min: 2, max: 40)
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|> validate_length(:slug, min: 2, max: 40)
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2017-12-08 08:58:14 +00:00
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end
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2018-01-14 16:56:50 +00:00
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end
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