为什么这个IndexedDB放置命令失败？错误：DataError：DOM IDBDatabase异常0 [英] Why is this IndexedDB put command failing? Error: DataError: DOM IDBDatabase Exception 0

问题描述

  {name：John Doe，年龄：21} 
  

我使用了以下选项：

  {keyPath：id，autoIncrement：true} 
  

我能够找到该记录，并显示 id = 1 。然而，当我在下面运行这个命令时，它会抛出一个错误：

  var store = db.transaction（[employees]] ，readwrite）.objectStore（employees）; 
 var request = store.put（{name：John Doe，年龄：32}，1）; 
  

这会引发：

  DataError：DOM IDBDatabase异常0 
  

有谁知道错在哪里？我是否错误地指定了键？

更新

IndexedDB spec 指出第二个参数应该被允许：

 接口IDBObjectStore {
 ... 
 IDBRequest put（任意值，可选任意键）; 
 ... 
}; 
  

然而，这不起作用，但是确实有效：

  store.put（{name：John Doe，年龄：32，id：1}）; 
  

这是一个要求的错误。除非我还在做一些不正确的事情。 解决方案

错误意味着（在这里查看完整列表）：

数据

对象存储使用内嵌键并提供了键参数。

您正在指定 keypath ，它指示商店使用内嵌键，但是当你指定一个外联键作为第二个参数 put 时，它将失败。

I have successfully added the following to the objectStore when I created it:

{ name: "John Doe", age: 21 }

I used the options:

{ keyPath: "id", autoIncrement: true }

I am able to find that record and it shows the id = 1. However, when I run this command below, it throws an error:

var store = db.transaction( [ "employees" ], "readwrite" ).objectStore( "employees" );
var request = store.put( { name: "John Doe", age: 32 }, 1 );

This throws:

DataError: DOM IDBDatabase Exception 0

Does anyone know what's wrong? Am I specifying the key incorrectly?

Update

The IndexedDB spec states that the second parameter should be allowed:

interface IDBObjectStore {
    ...
    IDBRequest put (any value, optional any key);
    ...
};

However, it doesn't work, but this does work:

store.put( { name: "John Doe", age: 32, id: 1 } );

That is a bug to require that. Unless I'm still doing something incorrectly.

解决方案

The error means (see here for full list):

Data provided to an operation does not meet requirements.

The object store uses in-line keys and the key parameter was provided.

You are specifying a keypath which instruct the store to use in-line keys, but as you specified an out-of-line key as second parameter to put it will fail.

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