如何刪除mongodb中的數組元素？ - How to remove array element in mongodb?

問題：

Here is array structure這是數組結構

contact: {
    phone: [
        {
            number: "[phone]",
            place: "New Jersey",
            createdAt: ""
        }
        {
            number: "[phone]",
            place: "Houston",
            createdAt: ""
        }

    ]
}

Here I only know the mongo id( _id ) and phone number( [phone] ) and I need to remove that whole corresponding array element from document.在這裏，我只知道 mongo id( _id ) 和電話號碼( [phone] )，我需要從文檔中刪除整個相應的數組元素。 ie zero indexed element in phone array is matched with phone number and need to remove the corresponding array element.即電話數組中的零索引元素與電話號碼匹配，需要刪除相應的數組元素。

contact: {
    phone: [
        {
            number: "[phone]",
            place: "Houston",
            createdAt: ""
        }
    ]
}

I tried with following update method我嘗試使用以下更新方法

collection.update(
    { _id: id, 'contact.phone': '[phone]' },
    { $unset: { 'contact.phone.$.number': '[phone]'} }
);

But it removes number: [phone] from inner array object, not zero indexed element in phone array.但它從內部數組對象中刪除了number: [phone] ，而不是 phone 數組中的零索引元素。 Tried with pull also without a success.嘗試pull也沒有成功。

How to remove the array element in mongodb?如何刪除mongodb中的數組元素？

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解決方案：

參考一： https://en.stackoom.com/question/199pr
參考二： https://stackoom.com/question/199pr