如何使用流星Upsert [英] How to use Meteor Upsert

问题描述

让我的Meteor upsert功能正常工作有点麻烦.我是相当(200行代码)的新手，但遇到了一些麻烦.

Having a bit of trouble getting my Meteor upsert function working. I am fairly (200 lines of code) new, and I'm having a bit of trouble.

该集合将继续插入其他行，而不仅仅是更新.我花了30分钟的时间进行谷歌搜索，但找不到任何我能理解的示例.

The collection keeps on having additional rows inserted, rather than just updating. I spend the past 30 minutes googling, but I can't find any examples I can understand.

这是我的代码:

Values.upsert(
    {
      // Selector
      source: "SourceOne",
      currency: "USD"
    },
    {
      // Modifier
      value: res.data['data']['last']['value'],
      time: Date.now(),
    }
  );

我也尝试过

if(Values.find(
      {},{fields: {'source':"SourceOne", 'currency': "USD"}}
    )) {
    Values.update(
      {
        source: "SourceOne", 
        currency: "USD"
      },
      {
        value: res.data['data']['last']['value'],
        time: Date.now()
      }
    );
  } else {
    console.log('blah');
    Values.insert({
      source: "SourceOne", 
      currency: "USD",
      value: res.data['data']['last']['value'],
      time: Date.now()
    });
  }

仍然似乎无法弄清楚.

推荐答案

通过反复试验找出了答案:

Figured it out through trial and error:

Values.upsert({
    // Selector
    source: "SourceOne",
    currency: "USD"
}, {
    // Modifier
    $set: {
        value: res.data['data']['last']['value'],
        time: Date.now() // no comma needed here
    }
});

这篇关于如何使用流星Upsert的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！