app/Models/MainCate.php
// MAIN CATEGORY RELATIONSHIP WITH THEIR RELATED TRANSLATED CATEGORIES
MAIN CATEGORY RELATIONSHIP WITH THEIR RELATED TRANSLATED CATEGORIES
MAIN CATEGORY RELATIONSHIP WITH THEIR RELATED TRANSLATED CATEGORIES
public function def_cate()
    {
        return $this->belongsTo(
            self::class,
            'translation_of',
            'id'
        );
    }
public function def_cate ( ) { return $ this -> belongsTo ( self :: class , 'translation_of' , 'id' ) ; }
MAIN CATEGORY RELATIONSHIP WITH THEIR RELATED TRANSLATED CATEGORIES
MAIN CATEGORY RELATIONSHIP WITH THEIR RELATED TRANSLATED CATEGORIES
// RETURN THE ONLY MAIN CATEGORY OF THESE TRANSLATED ONES