BadMethodCallException in Builder.php

I'm not having much luck tying to get past the following error

BadMethodCallException in Builder.php
Call to undefined method Illuminate\Database\Query\Builder::posts()

The project I'm working on is a simple timeline for a social network. Although I'm stuck when calling the following route (creating a post)

Route::group(['middleware' => ['web', 'auth']], function () {
Route::get('home', 'TimelineController@index');
Route::post('/posts', 'PostController@create');
});

POST returns the 500 error I specified above. A quick search for the "unimplemented" method post() returns:

Searching 5094 files for "posts()"

C:\Users\Administrator\Code\instyle\app\User.php:
   16      ];
   17  
   18:     public function posts()
   19      {
   20          return $this->hasMany('Instyle\Post');

    C:\Users\Administrator\Code\instyle\app\Http\Controllers    \PostController.php:
   17          ]);
   18  
   19:         $createdPost = $request->user()->posts()->create([
   20              'body' => $request->body,
   21          ]);

Since I'm having trouble pinpointing this error I'll happily elaborate on any file you require. Thanks!

via Chebli Mohamed