Sort issue search results by revelance (#14353)

Author: lafriks

models/issue.go

@@ -1682,7 +1682,7 @@ func SearchIssueIDsByKeyword(kw string, repoIDs []int64, limit, start int) (int6
 	)
 
 	var ids = make([]int64, 0, limit)
-	err := x.Distinct("id").Table("issue").Where(cond).Limit(limit, start).Find(&ids)
+	err := x.Distinct("id").Table("issue").Where(cond).OrderBy("`updated_unix` DESC").Limit(limit, start).Find(&ids)
 	if err != nil {
 		return 0, nil, err
 	}

models/issue_test.go

@@ -299,7 +299,7 @@ func TestIssue_SearchIssueIDsByKeyword(t *testing.T) {
 	total, ids, err = SearchIssueIDsByKeyword("for", []int64{1}, 10, 0)
 	assert.NoError(t, err)
 	assert.EqualValues(t, 5, total)
-	assert.EqualValues(t, []int64{1, 2, 3, 5, 11}, ids)
+	assert.ElementsMatch(t, []int64{1, 2, 3, 5, 11}, ids)
 
 	// issue1's comment id 2
 	total, ids, err = SearchIssueIDsByKeyword("good", []int64{1}, 10, 0)

modules/indexer/issues/bleve.go

@@ -247,6 +247,7 @@ func (b *BleveIndexer) Search(keyword string, repoIDs []int64, limit, start int)
 			newMatchPhraseQuery(keyword, "Comments", issueIndexerAnalyzer),
 		))
 	search := bleve.NewSearchRequestOptions(indexerQuery, limit, start, false)
+	search.SortBy([]string{"-_score"})
 
 	result, err := b.indexer.Search(search)
 	if err != nil {

modules/indexer/issues/elastic_search.go

@@ -205,7 +205,7 @@ func (b *ElasticSearchIndexer) Search(keyword string, repoIDs []int64, limit, st
 	searchResult, err := b.client.Search().
 		Index(b.indexerName).
 		Query(query).
-		Sort("id", true).
+		Sort("_score", false).
 		From(start).Size(limit).
 		Do(context.Background())
 	if err != nil {

modules/indexer/issues/indexer_test.go

@@ -65,7 +65,7 @@ func TestBleveSearchIssues(t *testing.T) {
 
 	ids, err = SearchIssuesByKeyword([]int64{1}, "for")
 	assert.NoError(t, err)
-	assert.EqualValues(t, []int64{1, 2, 3, 5, 11}, ids)
+	assert.ElementsMatch(t, []int64{1, 2, 3, 5, 11}, ids)
 
 	ids, err = SearchIssuesByKeyword([]int64{1}, "good")
 	assert.NoError(t, err)
@@ -89,7 +89,7 @@ func TestDBSearchIssues(t *testing.T) {
 
 	ids, err = SearchIssuesByKeyword([]int64{1}, "for")
 	assert.NoError(t, err)
-	assert.EqualValues(t, []int64{1, 2, 3, 5, 11}, ids)
+	assert.ElementsMatch(t, []int64{1, 2, 3, 5, 11}, ids)
 
 	ids, err = SearchIssuesByKeyword([]int64{1}, "good")
 	assert.NoError(t, err)