eloquent - Laravel Relationship: Fetch child and its Parent from same table -

i have been using laravel 5.4 few weeks now. trying hands on laravel relationships. i'm trying fetch record , relation category record. want parent of fetched category using same relation.

category table:

-------------------------------------------- |   id     | name         | parent_id      | |------------------------------------------| |   1      | deals        |   0            | |------------------------------------------| |   2      | dining       |   1            | --------------------------------------------  

deals table:

-------------------------------------------- |   id     | title        | category       | |------------------------------------------| |   1      | first deal   |   2            | -------------------------------------------- 

i have added relationship in deal , category models

deal model:

class deal extends model {      public function category() {                 return $this->hasone(category::class, 'id', 'category');     }      // fetching deal     public function fetchdeals($id = false) {         $deal = deal::with('category')->get();     } 

category model:

class category extends model {      public function deals() {                 return $this->hasmany(deal::class, 'category');     } 

i'm able fetch deal , relation category. not able grab parent of category.

i tried reading through few possible similar sof questions: similar 1, similar 2, similar 3. cant figure relation concept. how write above relation both parent , child category of deal.

you suggest reference article can refer.

please guide.

i have been on task few days , after reading through few articles , tutorials, have decided implement baum package

the doc easy many handy methods. easy traverse , manipulate through , parent ids of category. also, found few helpful videos on same.

hope similar requirement find helpful. cheers !!