1 files changed, 20 insertions, 0 deletions
diff --git a/models/persister.go b/models/persister.go
index 71cddc8..3729c81 100644
--- a/models/persister.go
+++ b/models/persister.go
@@ -35,3 +35,23 @@ func (p *Persister) Count(model model) (int, error) {
 	})
 	return count, err
 }
+
+func (p *Persister) Collect(model model) ([]string, error) {
+	var result []string
+	err := p.db.View(func(txn *badger.Txn) error {
+		opts := badger.DefaultIteratorOptions
+		opts.PrefetchValues = false // TODO Maybe we want true here
+		it := txn.NewIterator(opts)
+		defer it.Close()
+		prefix := []byte(model.Keybase())
+		for it.Seek(prefix); it.ValidForPrefix(prefix); it.Next() {
+			item := it.Item()
+			item.Value(func(v []byte) error {
+				result = append(result, string(v))
+				return nil
+			})
+		}
+		return nil
+	})
+	return result, err
+}