Eloquent relationships

 Eloquent supports relationships such as:

• hasOne

• hasMany

• belongsTo

• belongsToMany

• hasManyThrough

• polymorphic relationships

Example:

class User extends Model
{
    public function orders()
    {
        return $this->hasMany(Order::class);
    }
}

Usage:

$user->orders;

Or:

$user->orders()->where('status', 'paid')->get();

The first accesses the relationship result; the second returns a relationship/query builder.

Scenario

A shopping application might have:

User
 └── Orders
      └── OrderItems
           └── Product

Model relationships let application code represent this structure naturally.