Laravel 5 hasManyThrough

Question

I have 3 tables: company <-> users <-> invoice.

A company hasMany users.

A user belongsTo

Answer 1

You can also do this in the Course class, so when you use ->with('chapters'), it automatically loads the videos too:

public function chapters()
{
    return $this->hasMany('Moubarmij\Models\Chapter')->with('videos');
}

Answer 2

Let's say we have table A and B and C where table A has many of B (OneToMany) and B has many of C (OneToMany) inorder to access the table C from table A you can use the Laravel shortcut (HasManyThrough) on the Table A and the problem is solved

BUT If you have table A and B and C where table A has many of B (OneToMany) and B has many of C (ManyToMany) you cannot use the laravel's (HasManyThrough) shortcut to access the table C from table A, {because of the pivot table in the middle between B and C} what you can do in this case is very simple:

In this example table A will be [courses], table B will be [chapters], and table C will be [videos] where every course has may chapters, while a chapter can belong to only one course. in the other hand every chapter has many videos while a video can belong to many chapters.

<?php namespace Moubarmij\Models;

use Eloquent;

class Video extends Eloquent{

   protected $table = 'videos';

    /*************************************************************
     * Query Scopes
     **************************************************************/

    public function scopePublished($query)
    {
        return $query->where('published', '=', '1');
    }

    public function scopeOrdered($query)
    {
        return $query->orderBy('order_number', 'ASC');
    }

    /*************************************************************
     * Relations
     **************************************************************/

    public function chapters()
    {
        return $this->belongsToMany('Moubarmij\Models\Chapter', 'chapters_videos');
    }


}

---

<?php namespace Moubarmij\Models;

use Eloquent;

class Chapter extends Eloquent{

   protected $table = 'chapters';

    /*************************************************************
     * Query Scopes
     **************************************************************/

    public function scopePublished($query)
    {
        return $query->where('published', '=', '1');
    }

    public function scopeOrdered($query)
    {
        return $query->orderBy('order_number', 'ASC');
    }

    public function scopeWithVideos($query)
    {
        return $query->with(['videos' => function($q)
        {
            $q->ordered();
        }]);
    }


    /*************************************************************
     * Relations
     **************************************************************/

    public function course()
    {
        return $this->belongsTo('Course');
    }

    public function videos()
    {
        return $this->belongsToMany('Moubarmij\Models\Video', 'chapters_videos');
    }

}

---

<?php namespace Moubarmij\Models;

use Eloquent;

class Course extends Eloquent{

   protected $table = 'courses';

    /*************************************************************
     * Query Scopes
     **************************************************************/

    public function scopeVisible($query)
    {
        return $query->where('visible', '=', '1');
    }

    public function scopeOrdered($query)
    {
        return $query->orderBy('order_number', 'ASC');
    }

    public function scopeWithChapters($query)
    {
        return $query->with(['chapters' => function($q)
        {
            $q->ordered();
        }]);
    }

    public function scopeWithChaptersAndVideos($query)
    {
        return $query->with(['chapters' => function($q)
        {
            $q->ordered()->withVideos();
        }]);
    }


    /*************************************************************
     * Relations
     **************************************************************/

    public function chapters()
    {
        return $this->hasMany('Moubarmij\Models\Chapter');
    }


}