如何使用pymongo創建嵌入的數組列表並將其更新（在python中）？

Question

如何在mongodb python中使用pymongo創建如下所示的mongodb搭配，以及如何插入僅新對象的地址數組？

{ 
    _id: "joe", 
    name: "Joe Bookreader", 
    addresses: [ 
       { 
        street: "123 Fake Street", 
        city: "Faketon", 
        state: "MA", 
        zip: "12345" 
       }, 
       { 
        street: "1 Some Other Street", 
        city: "Boston", 
        state: "MA", 
        zip: "12345" 
       } 
       ] 
} 

Answer 1

您需要$使用推

如果（_id_exists）：

 newAdrz = {"$push": {"addresses": 
          { 
           street: "1 Some Other Street", 
           city: "Boston", 
           state: "MA", 
           zip: "12345" 
          }} 
        } 

     self.collection.update({_id: "joe"}, newAdrz) 

其他：

 root = {_id: "joe",name: "Joe Bookreader", 
      addresses: [ 
      { 
       street: "123 Fake Street", 
       city: "Faketon", 
       state: "MA", 
       zip: "12345" 
      }] 
       } 

      self.collection.insert(root) 

如果_id已經在存在這將更新地址陣列mongodb