Laravel Eloquent Model::whereWithHas() global dynamic scope

App\Models\Model.php

<?php

namespace App\Models;

use App\Models\Traits\WithWhereHas;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Model as BaseEloquentModel;

abstract class Model extends BaseEloquentModel
{
    public function scopeWithWhereHas(Builder $query, string $column, \Closure $conditions): Builder
    {
        return $query->whereHas($column, $conditions)
            ->with([$column => $conditions]);
    }
}

ApprovalBoardRequirement.php

<?php

namespace App\Models;

use App\Models\Collections\CourseCollection;
use Illuminate\Database\Eloquent\SoftDeletes;

/**
 * App\Models\ApprovalBoardRequirement
 *
 */
class ApprovalBoardRequirement extends Model
{
    use SoftDeletes;

    /* ... relations, casts, etc ... */

    /* ========================================== Affordances ========================================== */

    /**
     * Return courses that have approval associated with this requirement's board and this requirement
     */
    public function getApprovedCourses(): Builder
    {
        $withApprovals = function($query) {
            return $query->where('course_approvals.approval_board_id', $this->approval_board_id)
                ->where('course_approvals.approval_board_requirement_id', $this->id);
        };

        return $query = Course::unexpired()
            ->published()
            ->withWhereHas('approvals', $withApprovals);
    }
}