Dfyjkt

I have a Model which is called Championship. Championship may have 3 judges which are called Main Judge, Main Secretary and Judge Operator.

All of them linked to User Model and stored in the database as user ID.

My relationships looks like this

class Championship extends Model

 protected $table = 'championships';

 public function mainJudge()
 
 return $this->hasOne('AppUser', 'id', 'main_judge');
 

 public function mainSecretary()
 
 return $this->hasOne('AppUser', 'id', 'main_secretary');
 

 public function judgeOperator()
 
 return $this->hasOne('AppUser', 'id','judge_operator');
 

But I can't undertand how to define inverse relationship in User model

class User extends Authenticatable
{
 public function sex()
 
 return $this->belongsTo('AppModelsSex');
 

 public function player()
 
 return $this->hasOne('AppModelsPlayer', 'user_id');
 

 public function championship()
 
 ????
 

You just have to add it like you are adding other relations :

public function championship()

 return $this->belongsTo('AppChampionship');

When you do :

$championship = Championship::find($id);
$mainJudge = $championship->mainJudge;
$mainSecretary = $championship->mainSecretary;

// All objects will be exactly same
dd($mainJudge->championship,$mainSecretary->championship,$championship); 

I assume all the user records have a foreign key to championships table championship_id

When you call the $user->championship relation it will return you the championship wrt to its foreign key championship_id

No need to worry you are just confusing the inverse relations:

See it this way:

Your mainJudge, mainSecretary, judgeOperators are of type AppUser and every user have a championship_id when you will call the (AppUser)->championship it will always return you its respective championship or null if the championship_id is empty.
Its just matter of perspective.

Just try the above code it will clear out your confusion.