Automatically Update `created_by` and `updated_by` in Laravel Using Bootable Traits

hasanmn — Sun, 17 Oct 2021 01:43:41 +0000

If you use timestamps feature in Laravel, then you got the free feature of auto-update on created_at and update_at columns when the model is created or updated. Now, what if you want the same thing for you own customs created_by and updated_by columns? You want them to be automatically updated with the logged in user's id. Well, you can use observer or hook into model's lifecycle in boot or booted methods of the model. Let's use example of Post model as follows:

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class Post extends Model
{

    protected static function boot()
    {

        parent::boot();

        // updating created_by and updated_by when model is created
        static::creating(function ($model) {
            if (!$model->isDirty('created_by')) {
                $model->created_by = auth()->user()->id;
            }
            if (!$model->isDirty('updated_by')) {
                $model->updated_by = auth()->user()->id;
            }
        });

        // updating updated_by when model is updated
        static::updating(function ($model) {
            if (!$model->isDirty('updated_by')) {
                $model->updated_by = auth()->user()->id;
            }
        });
    }

}

In the above code, we hook into creating and updating lifecycle of the Post model. This works perfectly and is certainly convenient if you have only few models to apply this feature to. But what if you have many models? You have to apply the above code to all the models. Yes, it will work, but you know, it is not DRY.

The bootable trait, which is also used by Laravel's SoftDeletes trait, can save you a ton in this situation. Laravel' Eloquent model will boot a trait's method with the name of pattern boot[TraitName]. If you take a look into Laravel's source code, you can find the snippet below.

    /**
     * Bootstrap the model and its traits.
     *
     * @return void
     */
    protected static function boot()
    {
        static::bootTraits();
    }

    /**
     * Boot all of the bootable traits on the model.
     *
     * @return void
     */
    protected static function bootTraits()
    {
        $class = static::class;

        $booted = [];

        foreach (class_uses_recursive($class) as $trait) {
            $method = 'boot'.class_basename($trait);

            if (method_exists($class, $method) && ! in_array($method, $booted)) {
                forward_static_call([$class, $method]);

                $booted[] = $method;
            }

        }
    }

The above code tells us the trait with the name of boot[traitName] will also be invoked when the model is booted.

Knowing this, we now can create a new trait called CreatedUpdatedBy with a method of bootCreatedUpdatedBy as follows.

<?php

namespace App\Traits;

trait CreatedUpdatedBy
{
    public static function bootCreatedUpdatedBy()
    {
        // updating created_by and updated_by when model is created
        static::creating(function ($model) {
            if (!$model->isDirty('created_by')) {
                $model->created_by = auth()->user()->id;
            }
            if (!$model->isDirty('updated_by')) {
                $model->updated_by = auth()->user()->id;
            }
        });

        // updating updated_by when model is updated
        static::updating(function ($model) {
            if (!$model->isDirty('updated_by')) {
                $model->updated_by = auth()->user()->id;
            }
        });
    }
}

Next, we can easily use it in any model that we want to apply it to just like when we use SoftDeletes trait. For example in our Post method, it should be looked like this.

<?php

namespace App\Models;

use App\Traits\CreatedUpdatedBy;
use Illuminate\Database\Eloquent\Model;

class Post extends Model
{
    use CreatedUpdatedBy;

}

Whenever the Post model is created or updated, the created_by and/or updated_by will be automatically updated. Cool! Isn't it? 😎

Note that the above is just one example of using bootable traits in the Eloquent model to automatically update created_by and updated_by. However, there are many applications of it. For example, you can use it to automatically delete related models, update slugs, and many others you can think of.

How to Create Your Own Snippets in VS Code

hasanmn — Sun, 30 May 2021 01:50:06 +0000

I am always looking for a new way to improve my workflow, to be more efficient. I found that using snippets is one of many things that surely can enhance my productivity. With snippets, using only several characters you get a chunk of codes that you often use. Certainly, there are a lot of snippet extensions in the VS Code marketplace. These snippets are super awesome, offering you a huge number of snippets; any snippet that you can imagine probably exists there. But, to be honest, I only use a few of them, and I have a hard time remembering their prefixes. I feel that it is better to create my own snippet that suits my own workflow, and hence I can remember easily.

Here is how I create my own snippets:

Install Snippet Creator Extension
In the editor, type a block of codes that you want to use as the snippet. Highlight them, open the command palette ( use ctrl + shift + p), select Create Snippet, and if you follow the suggested options, you will be fine.
Modify the created snippet to further accommodate your needs. Open command palette and select Preference: Configure User Snippets.

Now you can enjoy it.

Forem: hasanmn

Automatically Update `created_by` and `updated_by` in Laravel Using Bootable Traits

How to Create Your Own Snippets in VS Code