laravel- brain jaming error Undefined property: Illuminate\Database\Eloquent\Collection::$id - laravel

Question

UserController.php
public function edit_profile(){
$input = Input::all();
$res = array();
$_m = "";
$rules = array(
'userName' => 'required',
'fullName' => 'required',
'shopName' => 'required',
'userType' => 'required',
'email' => 'required',
'aboutMe' =>'required',
'address' =>'required',
'city' =>'required',
'country' =>'required',
'contactNo' =>'required|regex:/[0-9]{10,11}/',
);
$validator = Validator::make($input, $rules);
if (!$validator->fails())
{
$user = User::find(Auth::user()->get()->id);
$user->fullname = $input('fullName');
$user->username = $input('userName');
$user->businessname = $input('shopName');
$user->usertype = $input('userType');
$user->email = $input('email');
$user->aboutme = $input('aboutMe');
$user->address = $input('address');
$user->city = $input('city');
$user->country = $input('country');
$user->phone = $input('contactNo');
$user->save();
$res['success'] = true;
$res['message'] = "NO";
return Redirect::to('user.profile');
}
else
{
return Redirect::to('login');
}
}
profile.blade.php
<div class="tab-pane fade" id="p2">
<h2>Account details</h2>
<div class="hr hr-12 hr-double"></div>
{{ Form::open(array('url'=>'profile','class' =>'form-horizontal')) }}
<div class="form-group">
<label class="col-sm-3 control-label">Full Name:</label>
<div class="col-sm-3">
{{ Form::text('fullName',ucwords(Auth::user()->fullname),array('class'=>'form-control', 'placeholder'=> 'Full Name Here' )) }}
</div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label">User Name:</label>
<div class="col-sm-3">
{{ Form::text('userName',ucwords(Auth::user()->username),array('class'=>'form-control', 'placeholder'=>'e.g ali.ali')) }}
</div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label">Shop Name:</label>
<div class="col-sm-5">
{{ Form::text('shopName',ucwords(Auth::user()->businessname),array('class'=>'form-control', 'placeholder'=>'e.g Niazi Traders')) }}
</div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label">Email</label>
<div class="col-sm-4">
<div class="input-group">
<span class="input-group-addon"><i class="fa fa-envelope"></i></span>
{{ Form::email('email',ucwords(Auth::user()->email),array('class'=>'form-control', 'placeholder'=>'e.g john.smith#example.com')) }}
</div>
</div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label">User Type:</label>
<div class="col-sm-4">
<div class="input-group">
<span class="input-group-addon"></span>
{{ Form::select('userType',array('D'=>'Distributor', 'W'=>'Whole Saler','R' =>'Retailer'),ucwords(Auth::user()->usertype)) }}
</div>
</div>
</div>
<hr class="separator">
<div class="form-group">
<label class="col-sm-3 control-label">About Me:</label>
<div class="col-sm-9">
{{ Form::textarea('aboutMe',ucwords(Auth::user()->aboutme),array('class'=>'form-control','id'=>'about-editor','placeholder'=>'Some thing about yourself......')) }}
</div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label">Address:</label>
<div class="col-sm-7">
{{ Form::text('address',ucwords(Auth::user()->address),array('class'=>'form-control','placeholder'=>'')) }}
</div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label">City:</label>
<div class="col-sm-3">
{{ Form::text('city',ucwords(Auth::user()->city),array('class'=>'form-control','placeholder'=>'e.g Islamabad')) }}
</div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label">Country:</label>
<div class="col-sm-4">
{{ Form::text('country',ucwords(Auth::user()->country),array('class'=>'form-control','placeholder'=>'e.g Pakistan')) }}
</div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label">Phone Number:</label>
<div class="col-sm-3">
{{ Form::text('contactNo',ucwords(Auth::user()->phone),array('class'=>'form-control','placeholder'=>'e.g 0300xxxxxx')) }}
</div>
</div>
<div class="form-actions">
<div class="form-group">
<div class="col-sm-offset-3 col-sm-9">
{{ Form::submit('Submit',array('class'=>'btn btn-primary')) }}
{{ Form::submit('Cancel',array('class'=>'btn btn-inverse')) }}
</div>
</div>
</div>
{{ Form::close() }}
</div>
Routes.php
Route::get('logout','UserController#get_logout');
Route::get('profile', 'UserController#get_profile');
Route::post('profile', 'UserController#edit_profile');
User.php
class User extends Eloquent implements UserInterface, RemindableInterface {
use UserTrait, RemindableTrait;
/**
* The database table used by the model.
*
* #var string
*/
protected $table = 'users';
/**
* The attributes excluded from the model's JSON form.
*
* #var array
*/
protected $hidden = array('password', 'remember_token');
}

Answer 1

Error lies in this line
$user = User::find(Auth::user()->get()->id);
get is a function of Builder class used for getting a collection of record, Auth::user() returns a single user so you just need to access its id property
change above line to
$user = User::find(Auth::user()->id);
but Auth::user you give the current user so you dont need to find it again, you can access its property directly
$user = Auth::user();