code: def insert_route(**kw):
      
      binding = {
              'path': None,
              'node_id': None,
              'weight': None,
              'method': "GET"
              }
      binding.update(kw)
      with current_app.app_context():
          db.execute(text(fetch_query_string('insert_route.sql')), **binding)
docs: `path` - '/', '/some/other/path/', '/test/<int:index>/'
      `node_id`
      `weight` - How this path is selected before other similar paths
      `method` - 'GET' is default.