我尝试使用mongoose更新文档但失败了。我可以直接在Mongo中成功执行的查询就像:
db.orders.update(
{
orderId: 1014428,
'delivery.items.id': '5585d77c714a90fe0fc2fcb4'
},
{
$inc: {
"delivery.items.$.quantity" : 1
}
}
)
当我尝试使用mongoose运行以下更新命令时:
this.update(
{
orderId: this.orderId ,
"delivery.items.id": product.id
},
{
$inc: {
"delivery.items.$.quantity" : 1
}
}, function (err, raw) {
if (err) {
console.log(err);
}
console.log('The raw response from Mongo was ', raw);
}
);
我看到以下错误:
{ [MongoError: cannot use the part (items of delivery.items.id) to traverse the element ({items: [ { quantity: 1, price: 6.9, name: "Manipulationstechniken", brand: null, id: "5585d77c714a90fe0fc2fcb4" } ]})]
name: 'MongoError',
message: 'cannot use the part (items of delivery.items.id) to traverse the element ({items: [ { quantity: 1, price: 6.9, name: "Manipulationstechniken", brand: null, id: "5585d77c714a90fe0fc2fcb4" } ]})',
index: 0,
code: 16837,
errmsg: 'cannot use the part (items of delivery.items.id) to traverse the element ({items: [ { quantity: 1, price: 6.9, name: "Manipulationstechniken", brand: null, id: "5585d77c714a90fe0fc2fcb4" } ]})' }
The raw response from Mongo was { ok: 0, n: 0, nModified: 0 }
我尝试了很多东西。对此有何建议?
根据要求提供架构:
var Order = new Schema({
orderId: Number,
orderDate: String,
customerName: String,
state: Number,
delivery: {
items: {type: Array, default: []},
state: { type: Number, default: 0 }
}
});
答案 0 :(得分:3)
TL; DR:在执行更高级的查询时,请使用您的模型 <hive xmlns="uri:oozie:hive-action:0.1">
<job-tracker>${jobTracker}</job-tracker>
<name-node>${nameNode}</name-node>
<configuration>
<property>
<name>mapred.job.queue.name</name>
<value>${queueName}</value>
</property>
</configuration>
<script>hiveScript.hql</script>
</hive>
<ok to="end" />
<error to="kill" />
</hive>
而不是实例Order
:
this
说明:
映射Orders.update(
{
orderId: this.orderId ,
"delivery.items.id": product.id
},
{
$inc: {
"delivery.items.$.quantity" : 1
}
}, function (err, raw) {
if (err) {
console.log(err);
}
console.log('The raw response from Mongo was ', raw);
}
);
和Model.update()
之间的差异。
使用模型,然后将使用Model.update()和
Document.update()
将映射到:
Model.update(conditions, doc, options, callback)
使用实例时,而不是调用Document.update()和
db.collection.update(query = conditions, update = doc, options)
将映射到以下内容:
Document.update(doc, options, callback)
答案 1 :(得分:0)
不知道这是否有帮助,但在this question中,O.P。与mongoose 3.6.15有类似的问题,并声称它已在3.8.22中解决
编辑:在链接的问题中,O.P。在mongodb上进行了以下工作
db.orchards.update(
({"orchardId": ObjectId("5391c137722b051908000000")},
{"trees" : { $elemMatch: {"name":"apple"}}}),
{ $push: { "trees.$.fruits": ObjectId("54c542c9d900000000001234") }})
但这不适用于猫鼬:
orchards.update(
({"orchardId": ObjectId.fromString(orchard.id)},
{"trees" : {$elemMatch: {"name": "apple"}}}),
{$push: {"trees.$.fruits": ObjectId("54c542c9d900000000001234") }},function(err, data){ ...
在评论中,他说问题已经解决,切换到mongoose 3.8.22