CODEWITHSUNDEEP
phplaravelmodeleloquentinner-join
Gauthier
Gauthier

Reputation: 1256

Elloquent ORM Model::with() returning NULL

I have an issue retrieving objects using the ->with() method of a Model object.

In my app, I have 4 tables (I write here what I think is the essential fields of my table, so ):

**Categories**:
id

**Subcategorie**
id
id_categorie

**UserSubcategorie**
id_user
id_subcategorie

**Lawyers**
user_id

I'm trying to get all the users for a given Categorie (which means all the users connected to all the categorie's subcategorie)

My request is as followed :

$categorie = LegalCategory::whereIn('id', $arrayCat)->with('legal_subcategories')->get();
foreach ($categorie as $k =>$cat){
    $selectedCat[$k]['categorie'] = $cat;
    $selectedCat[$k]['lawyers'] = 
        Lawyer::Join('lawyers_legal_subcategories', 'lawyers.user_id', '=', 'lawyers_legal_subcategories.user_id')
        ->with('lawyer_subcategories')
        ->whereIn('lawyers_legal_subcategories.legal_subcategory_id', $cat->legal_subcategories)
        ->get();                                                            
}

I'm getting the Lawyers correctly but when I look into lawyer->legal_subcategories , I have NULL

I don't understand why because when I try this :

Lawyer::orderBy('created_at')->take(4)->with('lawyer_subcategories')->get()

I have my subcategories in the Lawyer object.

Does someone has an idea about what the issue could be ?

Upvotes: 1

Views: 28

Answers (2)

Romnick Susa
Romnick Susa

Reputation: 1288

You should learn how to use has many through and Eager Loading. This will make you life easier.

On your case, you are making a lot of query, which will make your database suffer in the long run. Eager loading and Laravel eloquent provide a very efficient features to handle those kind of cases.

If you defined your model correctly, you retrieve all your needed data using with() method.

Upvotes: 1

Maraboc
Maraboc

Reputation: 11083

The problem is in this line :

->whereIn('lawyers_legal_subcategories.legal_subcategory_id', $cat->legal_subcategories)

you need to pass array of IDs not all the subcategories !

$categorie = LegalCategory::whereIn('id', $arrayCat)
                            ->with('legal_subcategories')
                            ->get();
foreach ($categorie as $k =>$cat){
    $selectedCat[$k]['categorie'] = $cat;
    $selectedCat[$k]['lawyers'] = 
        Lawyer::Join('lawyers_legal_subcategories', 'lawyers.user_id', '=', 'lawyers_legal_subcategories.user_id')
        ->with('lawyer_subcategories')
        ->whereIn('lawyers_legal_subcategories.legal_subcategory_id', 
                    $cat->legal_subcategories->pluck('id'))
        ->get();                                                            
}

Upvotes: 1

Related Questions