implement genfile

backend/global/question.go

@@ -80,6 +80,7 @@ func (f *FileDatabase) DelQuestion(id int64, istemp bool) error {
 
 type Question struct {
 	ID     int64  // ID is the first 8 bytes of the Plain's md5
+	FileID int64  // FileID is fk to File(ID)
 	Path   string // Path is the question's docx position
 	Plain  string // Plain is the plain text of the question (like markdown format)
 	Images []byte // Images is json of the image dhash in XML, ex. ['rId1': '1234567890abcdef', ...]