通过 angularfire 只删除一个项目 [英] remove just a item by angularfire

问题描述

我只想删除一个项目，但我的代码删除了所有项目.我不明白，也找不到其他解决方案，

请帮忙

<input type="text" ng-model="data.name" ng-change="datas.$save(data)"/><input type="text" ng-model="data.age" ng-change="datas.$save(data)"/><a ng-click="removeItem(id)">删除</a>
ref = new Firebase(FIREBASE_URL);authData = ref.getAuth();obj = $firebaseObject(ref);obj.$remove(id);

解决方案

如果 FIREBASE_URL 指向您的列表(甚至整个数据库)，那么您的代码确实会删除该列表.这是预期的行为.由于您使用的是 $firebaseObject，因此调用 $remove() 将删除该对象；在本例中为整个项目列表.

仅删除带有 id 的项目:

var ref = new Firebase(FIREBASE_URL);var items = $firebaseArray(ref);items.$remove(items.$indexFor(id));

顺便说一句，这有点令人费解，你可以很容易地做到:

new Firebase(FIREBASE_URL).child(id).remove();

之前已经问过这个问题，所以请对搜索友好:

• Angularfire:删除项目
• AngularFire $remove item from在 Firebase 参考中使用变量的数组不起作用
• AngularFire - 删除单个项目
• 使用 AngularJS 在 Firebase 中删除单个项目

I just want to remove an item, but my code removes all the items. I don't understand and can't find another solution,

please help

<div ng-repeat="(id, data) in datas">
<input type="text" ng-model="data.name" ng-change="datas.$save(data)" />  
<input type="text" ng-model="data.age" ng-change="datas.$save(data)" />
<a ng-click="removeItem(id)">delete</a>
</div>


ref = new Firebase(FIREBASE_URL);
authData = ref.getAuth();
obj = $firebaseObject(ref);    
obj.$remove(id);

解决方案

If FIREBASE_URL points to your list (or even entire database), then indeed your code will delete that list. This is expected behavior. Since you're using $firebaseObject, calling $remove() on that will remove the object; in this case the entire list of items.

To remove only the item with id:

var ref = new Firebase(FIREBASE_URL);
var items = $firebaseArray(ref);    
items.$remove(items.$indexFor(id));

This is a bit convoluted btw, you can just as easily do:

new Firebase(FIREBASE_URL).child(id).remove();

This has been asked before, so please become friendly with search:

• Angularfire: Delete item(s)
• AngularFire $remove item from Array using a variable in Firebase reference does not work
• AngularFire - Remove Single Item
• Delete single item in Firebase with AngularJS

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