How to push items of array to another array item by item-CodePudding

I have an array looks like ['N300W150727', '123test123', '123test1234'] I want push it into array mongoDB
I used $push it adds array inside array

 async updateSn(updateSn: UpdateSN) {
    const { id, bindedSn } = updateSn;
    return await this.userModel.updateOne(
      { id: id },
      {
        $push: {
          bindedSn: bindedSn,
        },
      },
    );
  }

Result

bindedSn
:
Array
0
:
"123test123"
1
:
"123test1234"
2
:
Array

my questions are :
1 - How to spread an array inside in mongoDB I used the spread operator nothing happen

 async updateSn(updateSn: UpdateSN) {
    const { id, bindedSn } = updateSn;
    return await this.userModel.updateOne(
      { id: id },
      {
        $push: {
          bindedSn: [...bindedSn],
        },
      },
    );
  }

2 - How can I send item of the array item by item to the service

CodePudding user response：

I guess what you want to do is to combine $push and $each

userModel.updateOne(
   { id: id },
   { $push: { bindedSn: { $each: bindedSn } } }
)