IndexedDB - 向嵌套对象添加键
我有一个具有以下结构的 IDB：
id: 1
name: "test"
operations: [
{
column: "active"
operator: "="
value: true
}
]
这里添加 ID，如下所示：
request.onupgradeneeded = e => {
let db = e.target.result
db.createObjectStore('filters', { autoIncrement : true, keyPath: 'id'})
}
用户可以添加一条新记录（在这种情况下它将具有 id：2 等），或者向现有记录添加操作。
我应该怎么做才能为每个操作添加自动递增键？
预期结果：
id: 1
name: "test"
operations: [
{
id: 1
column: "active"
operator: "="
value: true
},
{
id: 2
column: "age"
operator: ">"
value: 32
},
]
I have an IDB with the following structure :
id: 1
name: "test"
operations: [
{
column: "active"
operator: "="
value: true
}
]
Here the ID is added like so :
request.onupgradeneeded = e => {
let db = e.target.result
db.createObjectStore('filters', { autoIncrement : true, keyPath: 'id'})
}
Users can either add a new record, in which case it will have id: 2 and so on, or add an operation to an existing record.
What should I do to add an auto incrementing key to each operations ?
Expected result :
id: 1
name: "test"
operations: [
{
id: 1
column: "active"
operator: "="
value: true
},
{
id: 2
column: "age"
operator: ">"
value: 32
},
]
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IndexedDB 不会帮助您解决这个问题，您必须在应用程序代码中处理它。 IndexedDB中的自增键仅适用于对象的主键。
IndexedDB won't help you with that, you'll have to handle it in your application code. Auto incrementing keys in IndexedDB are only for the primary key of the object.