Filament: LMS: Learning Management System

The project has 3 main parts:

• Filament Admin Panel
  • Courses
  • Lessons are managed inside the course as a nested resource
  • Course has a featured image using Spatie Media Library
  • Course description has a rich text editor
  • Lesson lesson_text has a rich text editor
  • Lessons can be reordered in the lesson list
  • Course and Lessons can be published/unpublished
• Filament Student Panel
  • Students can browse courses and lessons
  • Lesson can be marked/unmarked as completed
  • When the student navigates to the next lesson current lesson is automatically marked as completed
  • Students can see their courses in progress on the My Courses page
• Public page
  • Lists published courses and lessons.
  • To view the lesson user student must register/login
  • After registration/login, students will be redirected to the lesson page if they tried to view it before.

Lesson pages have HasParentResource trait:

app/Filament/Traits/HasParentResource.php

namespace App\Filament\Traits;
 
use Exception;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\ModelNotFoundException;
 
trait HasParentResource
{
    public Model|int|string|null $parent = null;
 
    public function bootHasParentResource(): void
    {
        if ($parent = (request()->route('parent') ?? request()->input('parent'))) {
            $parentResource = $this->getParentResource();
 
            $this->parent = $parentResource::resolveRecordRouteBinding($parent);
 
            if (! $this->parent) {
                throw new ModelNotFoundException();
            }
        }
    }
 
    public function getParentResource(): string
    {
        if (! isset(static::$parentResource)) {
            throw new Exception('Parent resource is not set for ' . static::class);
        }
 
        return static::$parentResource;
    }
 
    protected function applyFiltersToTableQuery(Builder $query): Builder
    {
        return $query->where(str($this->parent?->getTable())->singular()->append('_id'), $this->parent->getKey());
    }
 
    public function getBreadcrumbs(): array
    {
        $resource       = $this->getResource();
        $parentResource = $this->getParentResource();
 
        $breadcrumbs = [
            $parentResource::getUrl() => $parentResource::getBreadCrumb(),
            '#parent'                 => $parentResource::getRecordTitle($this->parent),
        ];
 
        // Breadcrumb to child.index or parent.view
        $childIndex = $resource::getPluralModelLabel() . '.index';
        $parentView = 'view';
 
        if ($parentResource::hasPage($childIndex)) {
            $url               = $parentResource::getUrl($childIndex, ['parent' => $this->parent]);
            $breadcrumbs[$url] = $resource::getBreadCrumb();
        } elseif ($parentResource::hasPage($parentView)) {
            $url               = $parentResource::getUrl($parentView, ['record' => $this->parent]);
            $breadcrumbs[$url] = $resource::getBreadCrumb();
        }
 
        if (isset($this->record)) {
            $breadcrumbs['#'] = $resource::getRecordTitle($this->record);
        }
 
        $breadcrumbs[] = $this->getBreadCrumb();
 
        return $breadcrumbs;
    }
}

Course resource has custom action to manage lessons and has routes for...