count

models/book/book.go

 	if barcode != "" {
 		sql += ` and b.book_barcode = '` + barcode + `'`
 	}
+	if borrowStatus != models.BORROW_TYPE_RESERVE {
+		sql += ` and a.borrow_status in(0,1,2,3)`
+	}
 	err := m.db.Sql(sql).Find(&record)
 	return len(record), err