Laravel Base Model with some simple caching mechanisms using attribute mutators.

Model.php

<?php

namespace App;

use App\Utils\Data;
use App\Utils\Str;
use Cache;
use Closure;
use Illuminate\Database\Eloquent\Model as BaseModel;

/**
 * Class Model
 *
 * Please discuss any changes to this Class with Dan before making them.
 */
abstract class Model extends BaseModel
{

    /**
     * If you want to specify the result of a Builder::get() as a property, you
     * may do so by specifying a query property. All this does is magically
     * call the a method or query scope on your call and hit it with get().
     *
     * @see \App\User::customers()
     *
     * e.g. User::find(1)->customers;   // \Illuminate\Database\Eloquent\Collection
     *
     * Works with objects you can call get() on.
     *
     * e.g. instanceof:
     *
     * \Illuminate\Database\Query\Builder
     *
     * To add caching automatically, use the $cache_related property instead.
     *
     * @var array $query_props */
    protected $query_props = [
        // 'method_name',       // Will not cache
        // 'ex_2' => ''         // Non-integer will not cache
        // 'ex_3' => 30,        // Cache for 30 minutes
        // 'ex_4' => 0          // Cache forever
    ];

    /**
     * Same as query props but more explicit in that there is caching.
     *
     * e.g. instanceof:
     *
     * \Illuminate\Database\Query\Builder
     * \Illuminate\Database\Query\HasMany
     * \Illuminate\Database\Query\HasManyThrough
     *
     * IMPORTANT: YOU WILL RECEIVE A COLLECTION BACK
     *
     * Use $cache_attributes for:
     *
     * \Illuminate\Database\Query\BelongsTo
     * \Illuminate\Database\Query\HasOne
     *
     * @var array
     */
    protected $cache_related = [
        // 'attr_name'          // Cache forever
        // 'ex_2' => 0          // Cache forever
        // 'ex_3' => 30         // Cache for 30 minutes
    ];

    /**
     * Use Laravel's get attribute mutator to conveniently store cached data.
     *
     * Leverage for simple solutions for Models that do not have Repositories
     * already, if you feel like you're doing something dirty, then that means
     * you should create a new Repository for your model.
     *
     * @see https://laravel.com/docs/5.1/eloquent-mutators#accessors-and-mutators
     * @var array $cache_attributes */
    protected $cache_attributes = [
        // 'attr_name'          // Cache forever
        // 'ex_2' => 0          // Cache forever
        // 'ex_3' => 30         // Cache for 30 minutes
    ];

    /**
     * Simple attribute caching, for more robust caching, use a Repository
     *
     * @param string $attribute
     * @param null $id
     * @return string
     */
    private function cacheAttributeKey($attribute, $id = null)
    {
        $id = $id ?: $this->getKey();
        return implode('|', [get_class($this), $id, 'attribute', $attribute]);
    }

    /**
     * Simple method caching, for more robust caching, use a Repository
     *
     * @param string $related
     * @param null $id
     * @return string
     */
    private function cacheRelatedKey($related, $id = null)
    {
        $id = $id ?: $this->getKey();
        return implode('|', [get_class($this), $id, 'related', $related]);
    }

    /**
     * @param string $attribute
     * @param int $minutes
     * @param Closure $callback
     * @return mixed
     */
    private function cacheAttribute($attribute, $minutes, Closure $callback)
    {
        $dynamic_cache_time = $this->dynamicCacheTime($attribute);
        return Cache::remember($this->cacheAttributeKey($attribute), $dynamic_cache_time ?: $minutes, $callback);
    }

    /**
     * @param string $attribute
     * @param int $minutes
     * @param Closure $callback
     * @return mixed
     */
    private function cacheRelated($attribute, $minutes, Closure $callback)
    {
        $dynamic_cache_time = $this->dynamicCacheTime($attribute);
        return Cache::remember($this->cacheRelatedKey($attribute), $dynamic_cache_time ?: $minutes, $callback);
    }

    /**
     * @param string|array|null $attribute
     */
    public function cacheAttributeBust($attribute = null, $id = null)
    {
        $attribute = is_null($attribute)
            ? Data::normalizeAssociative($this->cache_attributes, 0)
            : $attribute;

        $attribute = is_string($attribute)
            ? (array) $attribute
            : $attribute;

        foreach ($attribute as $a) {
            Cache::forget($this->cacheAttributeKey($a, $id));
        }
    }

    /**
     * @param string|array|null $related
     */
    public function cacheRelatedBust($related = null)
    {
        $related = is_null($related)
            ? Data::normalizeAssociative($this->cache_related, 0)
            : $related;

        $related = is_string($related)
            ? (array) $related
            : $related;

        foreach ($related as $r) {
            Cache::forget($this->cacheRelatedKey($r));
        }
    }

    /**
     * @param string $parent_class      The Model
     * @param string|int $parent_id     The Model's primary key value
     * @param string $sub_key           A classification / category
     * @param string $key               Cache key name
     */
    public static function cacheBust($parent_class, $parent_id, $sub_key, $key)
    {
        Cache::forget(implode('|', func_get_args()));
    }

    /**
     * In case we want to store a cache time in a config file. For the purposes
     * of modifying cache times with our ENV file (not having to do a push)
     *
     * @param $attribute_or_related
     * @return integer
     */
    public function dynamicCacheTime($attribute_or_related)
    {
        $class = get_class($this);
        return config("cache.dynamic_model_cache.{$class}.{$attribute_or_related}");
    }

    /**
     * @param string $name
     * @return mixed
     */
    public function __get($name)
    {
        $query_props_normalized = Data::normalizeAssociative($this->query_props, 'no-cache');
        $cache_attributes_normalized = Data::normalizeAssociative($this->cache_attributes, 0);
        $cache_related_normalized = Data::normalizeAssociative($this->cache_related, 0);

        /**
         * Handle query props.
         */
        if (in_array($name, array_keys($query_props_normalized))) {
            return call_user_func([$this, $name])->get();
        }

        /**
         * Handle any related models that are cached.
         */
        if (in_array($name, array_keys($cache_related_normalized))) {
            $minutes = (int) $cache_related_normalized[$name];

            return $this->cacheRelated($name, $minutes, function() use($name) {
                return call_user_func([$this, $name])->get();
            });
        }

        /**
         * Handle and get attribute mutators that are cached.
         */
        if (in_array($name, array_keys($cache_attributes_normalized))) {
            $minutes = (int) $cache_attributes_normalized[$name];

            return $this->cacheAttribute($name, $minutes, function() use($name) {
                return $this->getAttribute($name);
            });
        }

        return parent::__get($name);
    }

    /**
     * @param $query
     * @param Model $model
     * @param null $morph
     * @return \Illuminate\Database\Eloquent\Builder
     */
    public function scopeWhereMorph($query, Model $model, $morph = null)
    {
        $model_class = get_class($model);
        $model_id = $model->getKey();

        if (! empty($morph)) {
            $morph = array_pop(explode('\\', $model_class));
            $morph = strtolower(Str::singular($morph));
        }

        return $query->where("{$morph}_type", Str::rawClass($model_class))
            ->where("{$morph}_id", $model_id);
    }

    /**
     * @param $query
     * @param null $morph
     * @return \Illuminate\Database\Eloquent\Builder
     */
    public function scopeWhereMorphNull($query, $morph)
    {
        return $query->whereNull("{$morph}_type")
            ->whereNull("{$morph}_id");
    }

    /**
     * @param $query
     * @param null $morph
     * @return \Illuminate\Database\Eloquent\Builder
     */
    public function scopeWhereMorphNotNull($query, $morph)
    {
        return $query->whereNotNull("{$morph}_type")
            ->whereNotNull("{$morph}_id");
    }

}

ModelCacheServiceProvider.php

<?php

namespace App\Providers;

use App\Model;
// use App\User;
// use App\Models\Listing;
// use App\Models\Commission;
use Illuminate\Support\ServiceProvider;

/**
 * Class ModelCacheServiceProvider
 */
class ModelCacheServiceProvider extends ServiceProvider
{

    /**
     * Automatically clear caches for related data, cached on Parent models.
     *
     * @see Model::$cache_related
     * @var array $uses_cache_related */
    public static $uses_cache_related = [
        // [
        //     'model' => User::class,
        //     'related' => Listing::class,
        //     'foreign_key' => 'user_id',
        //     'methods' => ['listings'],
        //     'events' => ['saved', 'created', 'deleted']
        // ]
    ];

    /**
     * Automatically clear caches for related data, cached on Parent models.
     *
     * @see Model::$cache_related
     * @var array $uses_cache_attributes */
    public static $uses_cache_attributes = [
        // [
        //     'model' => User::class,
        //     'related' => Commission::class,
        //     'foreign_key' => 'user_id',
        //     'attributes' => ['total_owed'],
        //     'events' => ['saved', 'created', 'deleted']
        // ]
    ];

    /**
     * Bootstrap the application services.
     *
     * @return void
     */
    public function boot()
    {

        // For any usages of "uses cache related"
        foreach (static::$uses_cache_related as $purge_event) {

            // And for any of the specified model events
            $events = $purge_event['events'];
            foreach($events as $event) {
                $model = $purge_event['model'];
                $related = $purge_event['related'];
                $foreign_key = $purge_event['foreign_key'];
                $methods = $purge_event['methods'];

                // Add a listener to the related model to purge the parent's key
                call_user_func([$related, $event], function($r) use($model, $foreign_key, $methods) {
                    $parent_id = $r->{$foreign_key};

                    // To bust the related caches
                    foreach ($methods as $method) {
                        call_user_func_array([$model, 'cacheBust'], [$model, $parent_id, 'related', $method]);
                    }
                });
            }
        }

        // For any usages of "uses cache attributes"
        foreach (static::$uses_cache_attributes as $purge_event) {

            // And for any of the specified model events
            $events = $purge_event['events'];
            foreach($events as $event) {
                $model = $purge_event['model'];
                $related = $purge_event['related'];
                $foreign_key = $purge_event['foreign_key'];
                $attributes = $purge_event['attributes'];

                // Add a listener to the related model to purge the parent's key
                call_user_func([$related, $event], function($r) use($model, $foreign_key, $attributes) {
                    $parent_id = $r->{$foreign_key};

                    // To bust the related caches
                    foreach ($attributes as $attribute) {
                        call_user_func_array([$model, 'cacheBust'], [$model, $parent_id, 'attribute', $attribute]);
                    }
                });
            }
        }

    }

    /**
     * Register the application services.
     *
     * @return void
     */
    public function register()
    {

    }

}