how_to_use_attribute_dynamic_data.php

    /**
     * @return HasOne
     */
    public function statusReviews(): HasOne
    {
        return $this->hasOne(DailyReview::class, 'weekly_review_id', 'id')
            ->select('weekly_review_id',
                DB::raw('daily_reviews.approved_by IS NOT NULL as daily_reviews_is_approved')
            )
            ->groupBy('weekly_review_id');
    }

    /**
     * @return mixed
     */
    protected function getStatusReviewsRelation()
    {
        if ( ! $this->relationLoaded('statusReviews'))
            $this->load('statusReviews');

        return $this->getRelation('statusReviews');
    }

    /**
     * @return string|null
     */
    public function getStatusWeekReviewAttribute(): ?string
    {
        $relation = $this->getStatusReviewsRelation();
        if ($relation) {
            $DailyReviewIsApproved = $relation->daily_reviews_is_approved;
            $WeeklyReviewIsApproved = $this->approved_by ? true : false;
            if ($DailyReviewIsApproved) {
                if ($WeeklyReviewIsApproved) {
                    return self::WEEKLY_REVIEW_STATUSES[1]['value']; //Approved
                }

                return self::WEEKLY_REVIEW_STATUSES[0]['value']; //PendingWeekly
            }

            return self::WEEKLY_REVIEW_STATUSES[2]['value']; //PendingDaily
        }

        return null;
    }

    /** Get Weekly Totals */
    public function weekTotals(): HasOne
    {
        return $this->hasOne(DailyReportJobTier::class, 'weekly_review_id', 'id')
            ->select('weekly_review_id',
                DB::raw('SUM(daily_report_job_tier.regular_time) as rt_total'),
                DB::raw('SUM(daily_report_job_tier.overtime) as ot_total'),
                DB::raw('SUM(daily_report_job_tier.double_time) as dt_total'),
                DB::raw('(SUM(daily_report_job_tier.regular_time) + SUM(daily_report_job_tier.overtime) + SUM(daily_report_job_tier.double_time)) as week_total')
            )
            ->groupBy('weekly_review_id');
    }

    /**
     * @return mixed
     */
    protected function getWeekTotalRelation()
    {
        if ( ! $this->relationLoaded('weekTotals'))
            $this->load('weekTotals');

        return $this->getRelation('weekTotals');
    }

    /**
     * @return string|null
     */
    public function getWeekTotalAttribute(): ?string
    {
        return $this->getWeekTotalRelation() ? (string) $this->getWeekTotalRelation()->week_total  : null;
    }

    /**
     * @return string|null
     */
    public function getWeekTotalRegularTimeAttribute(): ?string
    {
        return $this->getWeekTotalRelation() ? (string) $this->getWeekTotalRelation()->rt_total  : null;
    }

    /**
     * @return string|null
     */
    public function getWeekTotalDoubleTimeAttribute(): ?string
    {
        return $this->getWeekTotalRelation() ? (string) $this->getWeekTotalRelation()->dt_total  : null;
    }

    /**
     * @return string|null
     */
    public function getWeekTotalOverTimeAttribute(): ?string
    {
        return $this->getWeekTotalRelation() ? (string) $this->getWeekTotalRelation()->ot_total  : null;
    }