我正在尝试比较新对象与original using 保存前的 CloudCode功能。我需要比较发送的字段update与现有的价值。问题是我无法正确获取对象。当我运行查询时,我总是从发送的对象中获取值。
UPDATE:我尝试了一种不同的方法,可以得到旧的寄存器(已经保存在解析中的寄存器)。但是在请求中发送的新请求被旧请求覆盖了。什么?!另一个问题是,即使代码发送了response.success()
,更新未保存。我相信我在这里遗漏了一些非常明显的东西。或者我遇到了错误或其他什么......
新的方法
Parse.Cloud.beforeSave('Tasks', function(request, response) {
if ( !request.object.isNew() )
{
var Task = Parse.Object.extend("Tasks");
var newTask = request.object;
var oldTask = new Task();
oldTask.set("objectId", request.object.id);
oldTask.fetch()
.then( function( oldTask )
{
console.log(">>>>>> Old Task: " + oldTask.get("name") + " version: " + oldTask.get("version"));
console.log("<<<<<< New Task: " + newTask.get("name") + " version: " + newTask.get("version"));
response.success();
}, function( error ) {
response.error( error.message );
}
);
}
});
OBJ SENT {"name":"LLL", "version":333}
LOG
I2015-10-02T22:04:07.778Z]v175 before_save triggered for Tasks for user tAQf1nCWuz:
Input: {"original":{"createdAt":"2015-10-02T17:47:34.143Z","name":"GGG","objectId":"VlJdk34b2A","updatedAt":"2015-10-02T21:57:37.765Z","version":111},"update":{"name":"LLL","version":333}}
Result: Update changed to {}
I2015-10-02T22:04:07.969Z]>>>>>> Old Task: GGG version: 111
I2015-10-02T22:04:07.970Z]<<<<<< New Task: GGG version: 111
注意:我正在通过 cURL 和解析控制台测试登录。
保存前的 CloudCode
Parse.Cloud.beforeSave("Tasks", function( request, response) {
var query = new Parse.Query("Tasks");
query.get(request.object.id)
.then(function (oldObj) {
console.log("-------- OLD Task: " + oldObj.get("name") + " v: " + oldObj.get("version"));
console.log("-------- NEW Task: " + request.object.get("name") + " v: " + request.object.get("version"));
}).then(function () {
response.success();
}, function ( error) {
response.error(error.message);
}
);
});
卷曲请求
curl -X PUT \
-H "Content-Type: application/json" \
-H "X-Parse-Application-Id: xxxxx" \
-H "X-Parse-REST-API-Key: xxxxx" \
-H "X-Parse-Session-Token: xxxx" \
-d "{\"name\":\"NEW_VALUE\", \"version\":9999}" \
https://api.parse.com/1/classes/Tasks/VlJdk34b2A
JSON 响应
"updatedAt": "2015-10-02T19:45:47.104Z"
LOG日志打印出original和new值,但我也不知道如何访问它。
I2015-10-02T19:57:08.603Z]v160 before_save triggered for Tasks for user tAQf1nCWuz:
Input: {"original":{"createdAt":"2015-10-02T17:47:34.143Z","name":"OLD_VALUE","objectId":"VlJdk34b2A","updatedAt":"2015-10-02T19:45:47.104Z","version":0},"update":{"name":"NEW_VALUE","version":9999}}
Result: Update changed to {"name":"NEW_VALUE","version":9999}
I2015-10-02T19:57:08.901Z]-------- OLD Task: NEW_VALUE v: 9999
I2015-10-02T19:57:08.902Z]-------- NEW Task: NEW_VALUE v: 9999