memEx/priv/repo/migrations/20221128003712_fix_search.exs

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2022-11-27 21:10:54 -05:00
defmodule Memex.Repo.Migrations.FixSearch do
use Ecto.Migration
def up do
reset_search_columns()
end
def down do
# no way to rollback this migration since the previous generated search columns were invalid
reset_search_columns()
end
defp reset_search_columns() do
alter table(:notes), do: remove(:search)
alter table(:contexts), do: remove(:search)
alter table(:pipelines), do: remove(:search)
flush()
execute """
ALTER TABLE notes
ADD COLUMN search tsvector
GENERATED ALWAYS AS (
setweight(to_tsvector('english', coalesce(slug, '')), '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)")
execute """
ALTER TABLE contexts
ADD COLUMN search tsvector
GENERATED ALWAYS AS (
setweight(to_tsvector('english', coalesce(slug, '')), 'A') ||
setweight(to_tsvector('english', coalesce(immutable_array_to_string(tags, ' '), '')), 'B') ||
setweight(to_tsvector('english', coalesce(content, '')), 'C')
) STORED
"""
execute("CREATE INDEX contexts_trgm_idx ON contexts USING GIN (search)")
execute """
ALTER TABLE pipelines
ADD COLUMN search tsvector
GENERATED ALWAYS AS (
setweight(to_tsvector('english', coalesce(slug, '')), 'A') ||
setweight(to_tsvector('english', coalesce(immutable_array_to_string(tags, ' '), '')), 'B') ||
setweight(to_tsvector('english', coalesce(description, '')), 'C')
) STORED
"""
execute("CREATE INDEX pipelines_trgm_idx ON pipelines USING GIN (search)")
end
end