Create the text index

database/books.go

@@ -59,7 +59,15 @@ func indexBooks(coll *mgo.Collection) {
 			Key:        []string{"active", "-bad_quality", "-_id"},
 			Background: true,
 		},
-		// TODO: there is no weights in mgo
+		{
+			Key: []string{"$text:title", "$text:author", "$text:contributor",
+				"$text:publisher", "$text:subject", "$text:description"},
+			Weights: map[string]int{"title": 20, "author": 20, "contributor": 15,
+				"publisher": 15, "subject": 10, "description": 5},
+
+			LanguageOverride: "_lang",
+			Background:       true,
+		},
 	}
 	for _, k := range []string{"lang", "title", "author", "subject"} {
 		idx := mgo.Index{