PHP code example of korridor / laravel-computed-attributes
1. Go to this page and download the library: Download korridor/laravel-computed-attributes library. Choose the download type require.
2. Extract the ZIP file and open the index.php.
3. Add this code to the index.php.
<?php
require_once('vendor/autoload.php');
/* Start to develop here. Best regards https://php-download.com/ */
korridor / laravel-computed-attributes example snippets
use Korridor\LaravelComputedAttributes\ComputedAttributes;
class Post {
use ComputedAttributes;
/**
* The attributes that are computed. (f.e. for performance reasons)
* These attributes can be regenerated at any time.
*
* @var string[]
*/
protected $computed = [
'complex_calculation',
'sum_of_votes',
];
/*
* Computed attributes.
*/
/**
* @return int
*/
public function getComplexCalculationComputed(): int
{
return 1 + 2;
}
/**
* @return int
*/
public function getSumOfVotesComputed(): int
{
return $this->votes->sum('rating');
}
// ...
}
/**
* Boot function from laravel.
*/
protected static function boot(): void
{
static::saving(function (Post $model) {
$model->setComputedAttributeValue('sum_of_votes');
});
parent::boot();
}
use Illuminate\Database\Eloquent\Builder;
// ...
/**
* This scope will be applied during the computed property generation with artisan computed-attributes:generate.
*
* @param Builder $builder
* @param array $attributes Attributes that will be generated.
* @return Builder
*/
public function scopeComputedAttributesGenerate(Builder $builder, array $attributes): Builder
{
if (in_array('sum_of_votes', $attributes)) {
return $builder->with('votes');
}
return $builder;
}
use Illuminate\Database\Eloquent\Builder;
// ...
/**
* This scope will be applied during the computed property validation with artisan computed-attributes:validate.
*
* @param Builder $builder
* @param array $attributes Attributes that will be validated.
* @return Builder
*/
public function scopeComputedAttributesValidate(Builder $builder, array $attributes): Builder
{
if (in_array('sum_of_votes', $attributes)) {
return $builder->with('votes');
}
return $builder;
}