我目前有
{
"_id": "5aa50b19db6ed014a0239511",
"exp_Comm_Inv_No": "10",
"exp_Inv_id_1": {
"_id": "5a9bfb013fbdb9107165b682",
"exp_Inv_No": "21",
"exp_Inv_Date": "2018-03-03T00:00:00.000Z",
"exp_Party_Name": "5a9bfaea3fbdb9107165b681",
"currency_Name": {
"_id": "5a1c1bfabea31d368632e7b4",
"currency_Name": "GBP",
"created_On": "2017-11-27T14:06:50.677Z",
"__v": 0
},
"inv_Amt_Fc": 321,
"fc_Rate": 23,
"created_On": "2018-03-04T13:56:17.276Z",
"__v": 0
}
}
但我想要这个
{
"_id": "5aa50b19db6ed014a0239511",
"exp_Comm_Inv_No": "10",
"exp_Inv_id_1": {
"_id": "5a9bfb013fbdb9107165b682",
"exp_Inv_No": "21",
"exp_Inv_Date": "2018-03-03T00:00:00.000Z",
"exp_Party_Name": "5a9bfaea3fbdb9107165b681",
"currency_Name": "GBP",
"inv_Amt_Fc": 321,
"fc_Rate": 23,
"created_On": "2018-03-04T13:56:17.276Z",
"__v": 0
}
}
请帮助
答案 0 :(得分:0)
您可以使用$ project
$project{'currency_Name' : "$currency_Name.currency_Name" }