Laravel : How to access many to many relationship data Ask - php

Question

I have category and subcategory table with many to many relationship
class Category extends Model {
protected $table='categories';
protected $fillable=['name'];
public function subcategories() {
return $this->belongsToMany('App\Modules\Subcategory\Models\Subcategory', 'categories_subcategories', 'category_id', 'subcategory_id');
}
}
Subcategory
class Subcategory extends Model {
protected $table='subcategories';
protected $fillable=['name'];
public function categories()
{
return $this->belongsToMany('App\Modules\Category\Models\Category', 'categories_subcategories', 'subcategory_id', 'category_id');
}
}
in controller
public function catSubList()
{
$subcategories = Subcategory::with('categories')->get();
return view('Subcategory::category_subcategory',compact('subcategories'));
}
But in view when i tried to access the data with following view
#foreach($subcategories as $row)
<td>{{$i}}</td>
<td>{{$row->name}}</td>
<td>{{$row->categories->name}}</td>
#endforeach
I got the error like :
ErrorException in Collection.php line 1527: Property [name] does not exist on this collection instance.
How do i access $row->categories->name ? anyone with the suggestion please?

Answer 1

You have to make another foreach() loop Because your subcategories belongsToMany categories. row->categories returns a collection, not an object. Thus the error.
<td>{{$row->name}}</td>
<td>{{$row->categories->name}}</td>
#foreach($row->categories as $category)
<td>{{$category->name}}</td>
#endforeach
Update
Getting a category with all subcategories. Simply invert your query
$category = Category::with('subcategories')
->where('name', '=', 'cars')
->first();
//will return you the category 'cars' with all sub categories of 'cars'.
Without eager loading
$category = Category::find(1);
$subacategories = $category->subcategories;
return view('Subcategory::category_subcategory', compact('category', subcategories));