php Eloquent 模型不更新 updated_at 时间戳
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/30844792/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Eloquent model not updating updated_at timestamp
提问by Musterknabe
I'm using Laravel 5.1. To make it simple, I have the following code
我正在使用 Laravel 5.1。为了简单起见，我有以下代码
Migration:
移民：
Schema::create('sitemap_data', function (Blueprint $table) {
// Primary and foreign keys
$table->increments('id');
$table->string('postUrl');
// Database functions
$table->timestamps();
});
And this is the code somewhere else I'm using
这是我正在使用的其他地方的代码
$sitemapData = SitemapData::firstOrNew([
'postUrl' => $post
]);
$sitemapData->save();
Now, according to the Laravel documentation
现在，根据 Laravel 文档
Again, the updated_at timestamp will automatically be updated, so there is no need to manually set its value
同样，updated_at 时间戳会自动更新，因此无需手动设置其值
The updated_at value should be updated in the table. However, this is not happening.
应在表中更新 updated_at 值。然而，这并没有发生。
It get's only set on the first insert, but not on updating. When I do it manually, like this
它只在第一次插入时设置，而不是在更新时设置。当我手动执行时，就像这样
$sitemapData = SitemapData::firstOrNew([
'postUrl' => $post
]);
$sitemapData->updated_at = Carbon::now();
$sitemapData->save();
it works. However, the docs say this should happend automatically, so what is wrong here?
有用。但是，文档说这应该自动发生，所以这里有什么问题？
I've searched some sites on stackoverflow for this question, but the ones I found where for Laravel 3 or 4.1, 4.2 etc.
我已经在 stackoverflow 上搜索了一些网站来解决这个问题，但我找到了 Laravel 3 或 4.1、4.2 等的位置。
How would I do that correctly?
我将如何正确地做到这一点？
回答by Pawel Bieszczad
回答by Saeed
Yeah what Musterknabehas done is correct but he should also check his model SitemapData.phpit should have to have set $timestamps = true;
是的，Musterknabe所做的是正确的，但他还应该检查他的模型SitemapData.php，它应该设置$timestamps = true;
<?php
class SitemapData extends Eloquent {
public $timestamps = true;
}
回答by Stan Smulders
It is possible actually:
实际上是可能的：
$model->updated_at = Carbon::now();
$model->save(['timestamps' => FALSE]);
That will properly save the updated_atto now. If you're not sure if any of the model's columns have changed, but you do want to update the updated_atregardless - this is the way to go.
这将正确保存updated_at到现在。如果您不确定模型的任何列是否已更改，但您确实想更新updated_at无论如何 - 这就是要走的路。
