Laravel Eloquent nested relation pivot with constraint

Question

I am currently working with laravel 4 I am trying to retrieve collection with constraint but it doesn't work as expected

model Caracteristique :

public function valeur() {

    return $this->hasMany('Valeur','id_caracteristique','id');

}

model valeur

public function caracteristique() {

    return $this->belongsTo('Caracteristique','id','id_caracteristique');

}

public function produit() {

    return $this->belongsToMany('Produit','produit_valeur');

}

model categorie

public function produit() {

    return $this->belongsToMany('Produit','produit_categorie');
}

model produit

public function valeur() {

    return $this->belongsToMany('Valeur','produit_valeur');
}

I want :

Caracteristique, with values where categorie = x through produit

final goal : To be able parsing collection like

caracteristique->valeur;

in SQL

SELECT c.id,v.id FROM caracteristique c
INNER JOIN valeur v on (v.id_caracteristique = c.id)
INNER JOIN produit_valeur pv on (pv.valeur_id = v.id)
INNER JOIN produit_categorie pc on (pc.produit_id = pv.produit_id)
GROUP by c.id

When i use join in eloquent relationship no longer available

I have tried this :

$carac = Caracteristique::with(array('valeur.produit.categorie' => function($q) {

$q->whereCategorieId(2);

 }))->get();

But the constraint not respected ..

Any ideas ?

Regards,

find this bad solution ...

$values = Valeur::whereHas('produit',function($q) {
$q->whereHas('categorie',function($q) {
    $q->where('categorie.id','=',2);

});
})->lists('id');

$carac = Caracteristique::with(array('valeur' =>function ($q) use($values) {
$q->wherein('id',$values);

}))->get();

Someone with best practice ?

Answer 1

If you want limit Caracteristique :

$catId = 2;

Caracteristique::whereHas('valeur', function ($q) use ($catId) {
  $q->whereHas('produit', function ($q) use ($catId) {
    $q->whereHas('categorie', function ($q) use ($catId) {
      $q->where('cateogorie.id', $catId);
    });
  });
})->get();

or if you want to load all Caracteristique and limit related Valeur only:

Caracteristique::with(['valeur' => function ($q) use ($catId) {
  $q->whereHas('produit', function ($q) use ($catId) {
    $q->whereHas('categorie', function ($q) use ($catId) {
      $q->where('cateogorie.id', $catId);
    });
  });
}])->get();

As you can see this is not the best piece of code to use, so instead simply use joins.