24 lines
857 B
Elixir
24 lines
857 B
Elixir
defmodule Mobilizon.Repo.Migrations.TagsRelations do
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use Ecto.Migration
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def up do
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create table(:tag_relations, primary_key: false) do
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add(:tag_id, references(:tags, on_delete: :delete_all), null: false, primary_key: true)
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add(:link_id, references(:tags, on_delete: :delete_all), null: false, primary_key: true)
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add(:weight, :integer, null: false, default: 1)
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end
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create(constraint(:tag_relations, :no_self_loops_check, check: "tag_id <> link_id"))
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create(index(:tag_relations, [:tag_id], name: :index_tag_relations_tag_id))
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create(index(:tag_relations, [:link_id], name: :index_tag_relations_link_id))
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end
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def down do
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drop(constraint(:tag_relations, :no_self_loops_check))
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drop(index(:tag_relations, [:tags_id]))
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drop(index(:tag_relations, [:link_id]))
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drop(table(:tag_relations))
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end
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end
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