Commit 88096c65 authored by rinpatch's avatar rinpatch
Browse files

Move gluing search results from application to database and get mutuals

a higher score multiplier
parent b92a16aa
Pipeline #9222 passed with stages
in 6 minutes and 39 seconds
......@@ -823,31 +823,53 @@ def search(query, resolve \\ false, for_user \\ nil) do
if resolve, do: get_or_fetch(query)
fts_results = do_search(fts_search_subquery(query), for_user)
{:ok, trigram_results} =
{:ok, results} =
Repo.transaction(fn ->
Ecto.Adapters.SQL.query(Repo, "select set_limit(0.25)", [])
do_search(trigram_search_subquery(query), for_user)
Repo.all(search_query(query, for_user))
end)
Enum.uniq_by(fts_results ++ trigram_results, & &1.id)
results
end
defp do_search(subquery, for_user, options \\ []) do
q =
from(
s in subquery(subquery),
order_by: [desc: s.search_rank],
limit: ^(options[:limit] || 20)
)
def search_query(query, for_user) do
fts_subquery = fts_search_subquery(query)
trigram_subquery = trigram_search_subquery(query)
union_query = from(s in trigram_subquery, union: ^fts_subquery)
distinct_query = from(s in subquery(union_query), distinct: s.id)
results =
q
|> Repo.all()
|> Enum.filter(&(&1.search_rank > 0))
from(s in subquery(boost_search_rank_query(distinct_query, for_user)),
order_by: [desc: s.search_rank],
limit: 20
)
end
boost_search_results(results, for_user)
defp boost_search_rank_query(query, nil), do: query
defp boost_search_rank_query(query, for_user) do
friends_ids = get_friends_ids(for_user)
followers_ids = get_followers_ids(for_user)
from(u in subquery(query),
select_merge: %{
search_rank:
fragment(
"""
CASE WHEN (?) THEN (?) * 1.3
WHEN (?) THEN (?) * 1.2
WHEN (?) THEN (?) * 1.1
ELSE (?) END
""",
u.id in ^friends_ids and u.id in ^followers_ids,
u.search_rank,
u.id in ^friends_ids,
u.search_rank,
u.id in ^followers_ids,
u.search_rank,
u.search_rank
)
}
)
end
defp fts_search_subquery(term, query \\ User) do
......@@ -906,33 +928,6 @@ defp trigram_search_subquery(term) do
)
end
defp boost_search_results(results, nil), do: results
defp boost_search_results(results, for_user) do
friends_ids = get_friends_ids(for_user)
followers_ids = get_followers_ids(for_user)
Enum.map(
results,
fn u ->
search_rank_coef =
cond do
u.id in friends_ids ->
1.2
u.id in followers_ids ->
1.1
true ->
1
end
Map.put(u, :search_rank, u.search_rank * search_rank_coef)
end
)
|> Enum.sort_by(&(-&1.search_rank))
end
def blocks_import(%User{} = blocker, blocked_identifiers) when is_list(blocked_identifiers) do
Enum.map(
blocked_identifiers,
......
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