推入数组猫鼬时对象对象而不是字符串

Question

我有以下插入配料的功能：

router.post('/api/recipes/ingredient/post', function (req, res) {
    console.log('before for');
    var names = req.body.ing_name;
    var amounts = req.body.ing_amount;
    for (var i = 0; i < names.length; i++) {
        var ingredientItem = {ingredient_name: names[i].toString(), amount: amounts[i].toString()};
        Recipe.update({name: req.body.name},
            {$push: {"ingredients": ingredientItem}},
            function (err, res) {
                if (err) {
                    console.log(err)
                    console.log("ERROR OCCURRED, COULD NOT SAVE USER IN DATABASE");
                }
                else {
                    console.log("USER SUCCESSFULLY MODIFIED IN DATABASE");
                }
            });
    }
});

但在集合中它最终是：

"ingredients" : [ 
        [ 
            {
                "_id" : ObjectId("59b8726b4de01a2958511871"),
                "amount" : "[object Object]",
                "ingredient_name" : "[object Object]"
            }
        ], 
        [ 
            {
                "_id" : ObjectId("59b8726b4de01a2958511872"),
                "amount" : "[object Object]",
                "ingredient_name" : "[object Object]"
            }
        ]
    ]

i 运行不知道如何修复它，也许有人会有想法？例如，当我在 names[i].toString 上执行 typeof 时，在推送之前它的类型为 String

Answer 1

您遇到此问题是因为您正试图将对象转换为字符串，因此显示了这样的字符串 "[object Object]"。

您需要从上面评论中所说的对象中获取 ingr_name。因此，与其将整个对象转换为字符串，不如像这样

从对象中提取 ingr_name

names->ingr_name

推入数组猫鼬时对象对象而不是字符串

Object object instead of string when pushing into array mongoose

arrays

mongoose

mongodb

node.js

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