不接触时间戳的更新(Laravel)

Disable it temporarily:

$user = User::find(1);
$user->timestamps = false;
$user->age = 72;
$user->save();

You can optionally re-enable them after saving.

This is a Laravel 4 and 5 only feature and does not apply to Laravel 3.

To add to Antonio Carlos Ribeiro's answer

If your code requires timestamps de-activation more than 50% of the time - maybe you should disable the auto update and manually access it.

In eloquent when you extend the eloquent model you can disable timestamp by putting

UPDATE

public $timestamps = false;

inside your model.

In Laravel 5.2, you can set the public field $timestamps to false like this:

$user->timestamps = false;
$user->name = 'new name';
$user->save();

Or you can pass the options as a parameter of the save() function :

$user->name = 'new name';
$user->save(['timestamps' => false]);

For a deeper understanding of how it works, you can have a look at the class \Illuminate\Database\Eloquent\Model, in the method performUpdate(Builder $query, array $options = []) :

protected function performUpdate(Builder $query, array $options = [])
// [...]


// First we need to create a fresh query instance and touch the creation and
// update timestamp on the model which are maintained by us for developer
// convenience. Then we will just continue saving the model instances.
if ($this->timestamps && Arr::get($options, 'timestamps', true)) {
$this->updateTimestamps();
}


// [...]

The timestamps fields are updated only if the public property timestamps equals true or Arr::get($options, 'timestamps', true) returns true (which it does by default if the $options array does not contain the key timestamps).

As soon as one of these two returns false, the timestamps fields are not updated.

Above samples works cool, but only for single object (only one row per time).

This is easy way how to temporarily disable timestamps if you want to update whole collection.

class Order extends Model
{


....


public function scopeWithoutTimestamps()
{
$this->timestamps = false;
return $this;
}


}

Now you can simply call something like this:

Order::withoutTimestamps()->leftJoin('customer_products','customer_products.order_id','=','orders.order_id')->update(array('orders.customer_product_id' => \DB::raw('customer_products.id')));

For Larvel 5.1, you can also use this syntax:

Model::where('Y', 'X')
->update(['Y' => 'Z'], ['timestamps' => false]);

For Laravel 5.x users who are trying to perform a Model::update() call, to make it work you can use

Model::where('example', $data)
->update([
'firstValue' => $newValue,
'updatedAt' => \DB::raw('updatedAt')
]);

As the Model::update function does not take a second argument anymore. ref: laravel 5.0 api

Tested and working on version 5.2.

I ran into the situation of needing to do a mass update that involves a join, so updated_at was causing duplicate column conflicts. I fixed it with this code without needing a scope:

$query->where(function (\Illuminate\Database\Eloquent\Builder $query) {
$query->getModel()->timestamps = false;
})

If you need to update single model queries:

$product->timestamps = false;
$product->save();

or

$product->save(['timestamps' => false]);

If you need to update multiple model queries use

DB::table('products')->...->update(...)

instead of

Product::...->update(...)

Laravel 8

Doing some overrides using seeders and on one test I have:

$item = Equipment::where('name', item_name))->first();
$item->description = 'some description';
$item->save(['timestamps' => false]);

Which works fine, but if I use firstOrNew then the $item->save(['timestamps' => false]); does not work.

// This does not work on Seeder file
$item = Model::firstOrNew(['name' => 'item_name']);
$item->description = 'some description';
$item->save(['timestamps' => false]);


// Doing the following works tho
$item = Model::firstOrNew(['name' => 'item_name']);
$item->description = 'some description';
$item->timestamps = false;
$item->save();

So in some cases you would use one over the other... Just check with die and dump to see whether +timestamps: false

$item->timestamps = false;
$item->save();

or

$item->save(['timestamps' => false]);

Edit: In my project I opted using $item->timestamps = false; so I would recommend using this as well. Here is a working snippet from laravelplayground: https://laravelplayground.com/#/snippets/4ae950f2-d057-4fdc-a982-34aa7c9fee15

Check the HasTimestamps on Laravel api: https://laravel.com/api/8.x/Illuminate/Database/Eloquent/Concerns/HasTimestamps.html

and the save method on Model: https://laravel.com/api/8.x/Illuminate/Database/Eloquent/Model.html

The save method still accepts options but passing timestamps will not work.