laravel adding custom another query into releatinship - laravel

Question

in laravel i have this query which that work fine,
$months = Month::with(['lessons' => function ($query) {
$query->with(['files']);
}])->get();
in this query i have $query->with(['files']) which that is:
public function files()
{
return $this->hasMany(LessonFiles::class);
}
i want to add this query for all of $query->with(['files']) rows which that have lesson_file_key:
LessonsView::whereLessonFileKey($lessonFile->lesson_file_key)->count()
it means i want to get count of each row of $query->with(['files']) in this query by adding above code, for example:
$months = Month::with(['lessons' => function ($query) {
$req = $query->with(['files']);
// for example using foreach on $req
// LessonsView::whereLessonFileKey($req->lesson_file_key)->count()
}])->get();
my models:
class Month extends Model
{
protected $guarded = ['id'];
protected $hidden = ['id'];
public function lessons()
{
return $this->hasMany(Lesson::class);
}
public function files()
{
return $this->hasMany(MonthFiles::class);
}
}
class Lesson extends Model
{
protected $guarded = ['id'];
protected $hidden = ['id', 'month_id', 'filename', 'file_url'];
public function month()
{
return $this->belongsTo(Month::class);
}
public function files()
{
return $this->hasMany(LessonFiles::class);
}
}
class LessonFiles extends Model
{
protected $guarded = ['id'];
protected $hidden = ['id', 'lesson_id', 'filename', 'file_url'];
public function lesson()
{
return $this->belongsTo(Lesson::class);
}
public function visits(){
return $this->hasMany(LessonsView::class);
}
}
class LessonsView extends Model
{
protected $guarded = ['id'];
protected $hidden = ['id','user_id','lesson_files_id','lesson_file_key','ip_address'];
public function visitedLesson(){
return $this->belongsTo(LessonFiles::class);
}
}

Answer 1

For something like this you could add a views relationship to you LessonFiles model, something like:
public function views()
{
return $this->hasMany(LessonsView::class, 'lesson_file_key', 'lesson_file_key');
}
Then in your query you can use withCount():
$months = Month::with([
'lessons.files' => function ($query) {
$query->withCount('views');
},
])->get();

Answer 2

Use withCount and whereColumn like this:
$months = Month::with(['lessons' => function ($query) {
$query->with(['files' => function($q) {
$q->withCount(['visits' => function($vq) {
$vq->whereColumn('lesson_views.lesson_file_key', 'lesson_files.lesson_file_key')
}]);
}]);
}])->get();