Product Model:
public function related_product()
{
return $this->belongsToMany(Product::class, 'related_product', 'product_id', 'related_product_id');
}
// Same table, self-referencing, but different the key order
public function related_products()
{
return $this->belongsToMany(Product::class, 'related_product', 'related_product_id', 'product_id');
}
Now I tried to make them sync by :
$product->related_product()->sync($request->related_products);
$product->related_products()->sync($request->related_products);
It is relating only posted value with the current object. Example: Suppose A Tshirt have 4 colors. White, Black, Blue, Red. I am posting [Black, Blue, Red] from the white. My code is doing something like this:
white -> Black
White -> Blue
White -> Red
Black -> white
Blue -> white
Red -> white
But I want few more.
white -> Black
White -> Blue
White -> Red
Black -> white
Blue -> white
Red -> white
Black -> Blue
Black -> Red
Blue - > Black
Blue - > Red
Red - > Black
Red - > Blue
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