Lawnchair-IndexedDB不支持多个记录 [英] Lawnchair-IndexedDB doesn't support multiple records

问题描述

我尝试在indexed-db中创建多个记录，但不允许我，例如nike和adidas objectStores

I tried creating multiple records in indexed-db but it won't allow me, example, nike and adidas objectStores

var nike = Lawnchair({adapter:'indexed-db', name:'stores', record:'nike'},function(e){
    console.log("nike store open");
    this.save({id:1}, function(data){
        console.log('nike data: ', data);
    });
});

var adidas = Lawnchair({adapter:'indexed-db', name:'stores', record:'adidas'},function(e){
    console.log("adidas store open");
    this.save({id:1}, function(data){
        console.log('adidas data: ', data);
    });
});

我认为这是在indexed-db中创建多个记录的方法.它实际上是在request.onupgradeneeded上发生的.参见下面的代码.

I think this is how to create multiple records in indexed-db. It actually happens on request.onupgradeneeded. See code below.

// Handle datastore upgrades.
request.onupgradeneeded = function(e) {
    var db = e.target.result;

    var nike = db.createObjectStore('nike');
    var adidas = db.createObjectStore('adidas');
};

如果我无法创建adidas记录，则实际上是访问它时抛出的错误.

If I can't create an adidas record this is actually the error that is thrown when accessing it.

[Exception... "The operation failed because the requested database object could not be found. For example, an object store did not exist but was being opened." code: "8" ...]

推荐答案

Lawnchair设计用于无模式的用例.为每个Lawnchair实例使用单独的数据库.

Lawnchair is designed for schemaless use case. Use separate database for each Lawnchair instance.

如果您确实需要一个数据库中的多个表，则可以使用其他库，例如我自己的ydn-db.

If you really need multiple tables in an database, you other libraries, like my own, ydn-db.

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