我有一个关于更新 mongo 集合的非常基本的问题。
假设我有一个这样的 mongo 文档:
{"Object_id:.....,"product_id":1234, "color":0}
{"Object_id:.....,"product_id":1234, "color":1} # note the same product_id
{"Object_id:.....,"product_id":12345, "color":0}
现在我想要的是:
if product_id == 1234 and color == 1: # 将该文档修改为 color = 2
更新后
{"Object_id:.....,"product_id":1234, "color":0}
{"Object_id:.....,"product_id":1234, "color":2} # note the same product_id
{"Object_id:.....,"product_id":12345, "color":0}