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Add fuzzy matching to ParadeDB search

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Make ParadeDB search typo-tolerant via configurable fuzzy distance and document the new setting. Add coverage for fuzzy query SQL and id parsing, and keep integration test stability under connection load.
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Lain Soykaf 2026-03-05 17:12:03 +04:00
commit 7efd296afb
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6 changed files with 79 additions and 7 deletions
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23
lib/pleroma/search/paradedb.ex
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@ -35,6 +35,22 @@ defmodule Pleroma.Search.ParadeDB do
Config.get([Pleroma.Search.ParadeDB, :table], @default_table)
end
defp fuzzy_distance do
case Config.get([Pleroma.Search.ParadeDB, :fuzzy_distance], 0) do
value when is_integer(value) and value in 0..2 ->
value
value when is_binary(value) ->
case Integer.parse(value) do
{parsed, ""} when parsed in 0..2 -> parsed
_ -> 0
end
_ ->
0
end
end
@impl true
def create_index do
with {:ok, _} <- client_impl().query("CREATE EXTENSION IF NOT EXISTS pg_search", []),
@ -190,7 +206,9 @@ defmodule Pleroma.Search.ParadeDB do
end
defp search_ids(query, limit, offset, author) do
base_sql = "SELECT id FROM #{table()} WHERE content &&& $1"
base_sql =
"SELECT id FROM #{table()} WHERE content &&& #{search_query_param_sql(fuzzy_distance())}"
params = [query]
{base_sql, params} =
@ -216,6 +234,9 @@ defmodule Pleroma.Search.ParadeDB do
end
end
defp search_query_param_sql(0), do: "$1"
defp search_query_param_sql(distance), do: "$1::pdb.fuzzy(#{distance})"
defp create_table_sql(table) do
"""
CREATE TABLE IF NOT EXISTS #{table} (