Retrieving eloquent relationship with laravel - php

Question

When I try to get the name of the Category from my product, I discovered I had to use a 'C' rather than a 'c' before it retrieved results. However when I try to get the Supplier name, the lowercase s works just fine. I was wondering what is causing this difference. Also if I dd($var), is the relations field expected to be empty. I assumed it would have something related to the relationships defined in my models.
Blade.php
<td>{{$product->Category->name}}</td>
<td>{{$product->salePrice}}</td>
<td>{{$product->stock}}</td>
<td>{{$product->supplier->company_name}}</td>
Product.php
public function category()
{
return $this->belongsTo('App\Category','category');
}
public function supplier()
{
return $this->belongsTo('App\Supplier','supplier_id');
}
Category.php
public function product()
{
return $this->hasMany('App\Product');
}
Supplier.php
public function product()
{
return $this->hasMany('App\Product');
}

Answer 1

You're missing a _id on your Product model:
public function category()
{
return $this->belongsTo('App\Category','category_id');
}
Or leave empty
public function category()
{
return $this->belongsTo('App\Category');
}
In your Controller
public function index()
{
$products = Product::all()->with('category');
return view('your_view', compact('products'));
}
If you dd the products
In your View you will se that the relation has been loaded because of the
Eager Loading
When accessing Eloquent relationships as properties, the relationship data is "lazy loaded". This means the relationship data is not actually loaded until you first access the property. However, Eloquent can "eager load" relationships at the time you query the parent model.
#foreach($products as $product)
<td>{{$product->category->name}}</td>
<td>{{$product->salePrice}}</td>
<td>{{$product->stock}}</td>
<td>{{$product->supplier->company_name}}</td>
#endforeach