我如何在 Firebase 中使用 $save()' Angular-Fire 来更新对象 属性 值
How do I use $save() in Firebase' Angular-Fire to Update Object Property Values
我有以下代码:
var FBref = new Firebase('https://employees.firebaseio.com/');
var peopleObject = $firebaseArray(FBref);
var person = {
"name":"John",
"age":"20",
"phone":"123-123-123"
};
peopleObject.$add(person);
我使用上面的代码成功添加了员工的新记录。
我需要将约翰的 phone 号码更新为 111-111-111。但是下面的代码不起作用。
var person = {
"name":"John",
"age":"20",
"phone":"111-111-111" //New phone number
};
peopleObject.$save(person);
有人指教
目前您正在尝试保存整个对象,但这是行不通的。
首先从数据库中获取记录,然后更新该记录,从而先检索旧记录。此后使用 $save
方法保存该对象。
//if update action is happening is similar session you can get unique by below code
var someRecordKey;
peopleObject.$add(person).then(function(ref) {
//get record id of new person
someRecordKey = ref.key();
});
// get record by unique key
var person = peopleObject.$getRecord(someRecordKey);
// change a message and save it
item.phone = "111-111-111";
peopleObject.$save(person).then(function() {
// data has been saved to our database
});
我有以下代码:
var FBref = new Firebase('https://employees.firebaseio.com/');
var peopleObject = $firebaseArray(FBref);
var person = {
"name":"John",
"age":"20",
"phone":"123-123-123"
};
peopleObject.$add(person);
我使用上面的代码成功添加了员工的新记录。
我需要将约翰的 phone 号码更新为 111-111-111。但是下面的代码不起作用。
var person = {
"name":"John",
"age":"20",
"phone":"111-111-111" //New phone number
};
peopleObject.$save(person);
有人指教
目前您正在尝试保存整个对象,但这是行不通的。
首先从数据库中获取记录,然后更新该记录,从而先检索旧记录。此后使用 $save
方法保存该对象。
//if update action is happening is similar session you can get unique by below code
var someRecordKey;
peopleObject.$add(person).then(function(ref) {
//get record id of new person
someRecordKey = ref.key();
});
// get record by unique key
var person = peopleObject.$getRecord(someRecordKey);
// change a message and save it
item.phone = "111-111-111";
peopleObject.$save(person).then(function() {
// data has been saved to our database
});