ORM

One to Many Has Many Through Many to Many

writers
---------------
id
name

blogs
---------------
id 
writer_id
title
          
belongsTo---------------------------------------------
Blog CONTROLLER
    public function blogs(){
        $data['blogs'] = Blog::get();
        return view('blogs',$data);
    }
Blog MODEL          
    public function writer(){
        return $this->belongsTo(Writer::class);
    }
    @foreach($blogs as $blog)
      <tr>
        <th scope="row">{{ $loop->index+1 }}</th>
        <td>{{ $blog->title }} -by {{ $blog->writer->name }} </td>
      </tr>
    @endforeach  
hasMany-----------------------------------------------    
Writer CONTROLLER
    public function writers(){
        $data['writers'] = Writer::get();
        return view('writers',$data);
    }
Writer MODEL
    public function blogs(){
        return $this->hasMany(Blog::class);
    }
    @foreach($writers as $writer)
      <tr>
        <th scope="row">{{ $loop->index+1 }}</th>
        <td>{{ $writer->name }}</td>
        <td>
          @foreach($writer->blogs as $blog)
            {{ $blog->id }} - {{ $blog->title }}<br>
          @endforeach
        </td>
      </tr>
    @endforeach
          
Delete er jonno----------------------------------------------
MODEL
class Course extends Model
{
    use HasFactory;
    protected $table = 'courses';

public function chapters(){
        return $this->hasMany(Chapter::class, 'course_id','id');
    } 
}
CONTROLLER       
public function deleteCourse($id){
    $data = Course::find($id);
    $data->chapters()->delete();                                                  
    $data->delete();                                               
    return redirect()->back()->with('delete', 'Deleted Successfully Done');
}
          
Show koranor jonno
MODEL
class Course extends Model
{
    use HasFactory;        
    public function user(){
        return $this->belongsTo(User::class);
    }
    public static function courses(){
        $all_course = Course::select('*')->orderBy('id', 'DESC')->get();
        return $all_course;
    }
}
BLADE
@foreach(App\Models\Course::courses() as $course)
          {{$course->title}}
          {{$course->user->name}}
@endforeach