angularfire，remove 方法返回“无效记录；找不到钥匙'，它应该发生什么? [英] angularfire, remove method returns 'Invalid record; could not find key', what should it be happenning?

问题描述

我目前正在使用 angularjs 和 firebase 开发一个 web 应用程序，虽然我能够保存新记录，但我无法使用 someReference.$remove(varkey); 删除记录；承诺返回:'无效记录；找不到密钥'但相同的参考能够正常保存项目.我修剪了 varkey 上的空格，但似乎一切都失败了，我正在使用 bower 依赖项，版本为angularfire":~0.8.0"根据 bower.json

I'm currently developing a webapp with angularjs and firebase, while I am able to save new records I am not able to remove a record using someReference.$remove(varkey); the promise returns: 'Invalid record; could not find key' but the same reference is able to save items normally. i trim spaces on the varkey but yet all seems to fail, I'm using bower dependency which version is "angularfire": "~0.8.0" according to bower.json

到目前为止，我的服务中的代码是:

So far my code in my service is:

var testRef        = new Firebase('https://test-list.firebaseio-demo.com/list'),
testRefArr     = $firebase(testRef).$asArray();

console.log(testRefArr);
var testpromise = testRefArr.$remove('-JXdmpQbeCAEBl7I3YVO');
testpromise.then(function (response) {console.log(response);}, function (error) {console.log('err: '+error);});

这是这篇文章的演示基础:带有 AngularFire 0.5.0 的 AngularJS - $remove item 不起作用但他们似乎使用的是 0.5.0 版本，而我使用的是 0.8.0.有什么想法吗?

this is a demo base from this post: AngularJS with AngularFire 0.5.0 - $remove item doesn't work but they seem to be using version 0.5.0 and im using 0.8.0. Any ideas?

推荐答案

AngularFireArray.$remove 方法接受项或索引，不接受 id.

The AngularFireArray.$remove method accepts either an item or an index, it does not accept an id.

因此要删除您知道 id 的项目，您必须先查找该项目:

So to remove an item for which you know the id, you have to look the item up first:

testRefArr.$remove(testRefArr.$getRecord('-JXdmpQbeCAEBl7I3YVO'))

这篇关于angularfire，remove 方法返回“无效记录；找不到钥匙'，它应该发生什么?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！