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laraveleventseloquentlaravel-events
Sergej Fomin
Sergej Fomin

Reputation: 1992

Laravel Eloquent Events Implementation

I am updating my model instance or inserting a new one like this:

$model = Model::updateOrCreate([id' => $request['id']],
$model_to_update_array);

I want to execute some code only when existing model instance ('tourist') was updated (and NOT when a new one was created or nothing changes).

I've read https://laravel.com/docs/5.4/eloquent#events about Eloquent events and it seems to me that I need to use updated or updating event. As I understand these events are 'built-in' in Laravel, so I don't have to use a lot of stuff from here: https://laravel.com/docs/5.4/events

I haven't found a tutorial showing how to implement Eloquent events. Since I am new to events conception at all, it's hard for me to understand how to use them. Can anyone drop a link to a good tutorial about Eloquent events (not events in general, but Eloqeunt events in particular) or maybe it can be shortly explained here?

Thank you in advance!

Upvotes: 0

Views: 405

Answers (2)

Sergej Fomin
Sergej Fomin

Reputation: 1992

@TheFallen gave a great answer to this problem in another thread on StackOverflow, please read if you are interested in thoroughly explained solution:

Laravel Eloquent Events - implement to save model if Updated

Upvotes: 0

thefallen
thefallen

Reputation: 9749

The easiest way to add Eloquent event for a particular model is to overwrite its boot() method:

protected static function boot()
{
    parent::boot();

    static::updating(function ($model) {

    });
}

When you put this in your model the anonymous function will run every time when the model is being updated. Please note that there is a difference between calling static::updating() and static::updated() depending on when you want to execute your code.

Upvotes: 1

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