memEx/priv/repo/migrations/20220726000552_create_notes.exs
shibao f03037a943
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add search to notes
2022-11-18 23:45:24 -05:00

42 lines
1.1 KiB
Elixir

defmodule Memex.Repo.Migrations.CreateNotes do
use Ecto.Migration
def up do
create table(:notes, primary_key: false) do
add :id, :binary_id, primary_key: true
add :title, :string
add :content, :text
add :tags, {:array, :citext}
add :visibility, :string
add :user_id, references(:users, on_delete: :delete_all, type: :binary_id)
timestamps()
end
flush()
execute """
CREATE FUNCTION immutable_array_to_string(text[], text)
RETURNS text LANGUAGE sql IMMUTABLE as $$SELECT array_to_string($1, $2)$$
"""
execute """
ALTER TABLE notes
ADD COLUMN search tsvector
GENERATED ALWAYS AS (
setweight(to_tsvector('english', coalesce(title, '')), 'A') ||
setweight(to_tsvector('english', coalesce(immutable_array_to_string(tags, ' '), '')), 'B') ||
setweight(to_tsvector('english', coalesce(content, '')), 'C')
) STORED
"""
execute("CREATE INDEX notes_trgm_idx ON notes USING GIN (search)")
end
def down do
drop table(:notes)
execute("DROP FUNCTION immutable_array_to_string(text[], text)")
end
end