laravel many to many relationship with pivot table example

Example 1: one to many laravel

For example, a blog post may have an infinite number of comments. And a single
comment belongs to only a single post  

class Post extends Model
{
    public function comments()
    {
        return $this->hasMany('App\Models\Comment');
    }
}

class Comment extends Model
{
    public function post()
    {
        return $this->belongsTo('App\Models\Post');
    }
}

Example 2: laravel detach

// Detach a single role from the user...
$user->roles()->detach($roleId);

// Detach all roles from the user...
$user->roles()->detach();

Example 3: laravel many to many relationship with pivot table

$user = User::find(1); //any user we want to find 
$user->trophies()->attach($idOfTrophy); 
//pass id or array of a Trophy ids 
//suppose admin has selected the trophy from a form and trophy id
// is in $request object, then.
$trophyId = $request->trophy_id;
$user->trophies()->attach($trophyId); //record is created in DB.
attach and syncWithoutDetaching both does same job

Example 4: laravel many to many migration

php artisan make:migration create_posts_users_table

Example 5: laravel many to many relationship with pivot table

$trophyIds  = Trophy::where('some_column','some_value')                    ->pluck('id')->toArray(); //it will give array of ids.$user->trophies()->detach($trophyIds); //deletes given trophies of $user

Example 6: laravel many to many relationship with pivot table

$user = User::find(1); //any user we want to find $user->trophies()->attach($idOfTrophy); //pass id or array of a Trophy ids //suppose admin has selected the trophy from a form and trophy id// is in $request object, then.$trophyId = $request->trophy_id;$user->trophies()->attach($trophyId); //record is created in DB.attach and syncWithoutDetaching both does same job