php - Post Error 500 adding a new row using Eloquent -

i'm trying follow tutorial making social network, functionality of liking , disliking when no row available in database using ajax (adding new entry) broken.
tutorial i'm following - video creates controller:
https://www.youtube.com/watch?v=drm19vkbcgu&list=pl55riy5tl51olosgk5xdo2mgjpqc0bxgv&index=20

development enviroment:

• phpstorm v9.0
• xampp v3.2.2
• jquery v1.12.0
• google chrome

error image:
error image link

the whole cycle:
, dislike button (the view):

<a href="#" class="like">{{ auth::user()->likes()->where('post_id', $post->id)->first() ? auth::user()->likes()->where('post_id', $post->id)->first()->like == 1 ? 'you post':'like' : 'like' }}</a> |  <a href="#" class="like">{{ auth::user()->likes()->where('post_id', $post->id)->first() ?  auth::user()->likes()->where('post_id', $post->id)->first()->like == 0 ?     'you don\'t post':'dislike' : 'dislike' }}</a>  <script>     var urllike = '{{ route('like') }}'; </script> 

route:

route::post('/like', [    'uses' => 'postcontroller@postlikepost',     'as' => 'like' ]); 

listener + ajax call:

$('.like').on('click', function(event){ event.preventdefault(); postid = event.target.parentnode.parentnode.dataset['postid']; var islike = event.target.previouselementsibling == null;  //console.log(postid+' '+islike); $.ajax({     method: 'post',     url: urllike,     data: {islike: islike, postid: postid, _token: token} })     .done(function(){         console.log(event.target.innertext);         event.target.innertext = islike ? event.target.innertext == 'like' ? 'you post':'like' : event.target.innertext == 'dislike' ? 'you don\'t post':'dislike' ;         if(islike){             event.target.nextelementsibling.innertext = 'dislike';         } else{             event.target.nextelementsibling.innertext = 'like';         }     }); }); 

controller:

public function postlikepost(request $request){      $post_id = $request['postid'];     $is_like = $request['islike'] === 'true';     $update = false;     $post = post::find($post_id);     if(!$post){         return null;     }      $user = auth::user();     $like = $user->likes()->where('post_id', $post_id)->first();      if($like){         $already_like = $like->like;         $update = true;         if($already_like == $is_like){             $like->delete();             return null;         }     }else{         $like->like = $is_like;         $like->post_id = $post_id;         $like->user_id = $user_id;     }      // working when controller updating broken when saving      if($update){         $like->update();     } else{         $like->save();     }     return null; } 

p.s:
i'm new phpstorm , laravel, if know way debug/log/watch variable values in eclipse, appreciated.

from see ajax request using wrong url it's requesting localhost/public/likes instead of localhost/your_project/public/like

$.ajax({     method: 'post',     url: 'like',     data: {islike: islike, postid: postid, _token: token} }) 

should work... or

<script>     var urllike = '{{ url::to('like') }}'; </script> 

not sure why route() not working though