Laravel :Attempt to assign property of non-object - php

Question

Error:
Attempt to assign property of non-object; ErrorException in AdminController.php line 40:
AdminController:
public function createSlider(AdminRequest $request)
{
$input = Request::all();
Sliders::create($input);
if (Request::hasFile('image')) {
$imageName = Request::input('title'). '.' .
$request->file('image')->getClientOriginalExtension();
$request->file('image')->move(
base_path() . '/public/assets/image/', $imageName
);
$input->image = $imageName; //------------> line 40.......
}
$input->save();
}
Html:
{!!Form::open(array('url' => 'admin/new_slider', 'files' => true)) !!}
<div class = "form-group">
{!!Form::label('title', 'Title:', ['class' => 'control-label']) !!}
{!!Form::text('title', null, ['class'=> 'input-mini ina tch'])!!}
{!!Form::label('title', 'Description:', ['class' => 'control-label']) !!}
{!!Form::text('description', null, ['class'=> 'input-mini '])!!}
</div>
<div class = "form-group">
{!!Form::label('title', 'Link:', ['class' => 'control-label']) !!}
{!!Form::text('link', null, ['class'=> 'input-mini'])!!}
{!!Form::label('title', 'Image:', ['class' => 'control-label']) !!}
{!! Form::file('image', ['id' => 'imgInp', 'class' => 'prev-upload']) !!}
</div>
<div class = "form-group">
{!!Form::submit('Submit', ['class'=> 'btn btn-default'])!!}
</div>
{!! Form::close() !!}
I've been struggling with this all morning. I want to be able to accept a file upload along with the form information. Renaming the file is not necessary just how i thought i could get this to work. Is there a better way to do this file upload and move?

Answer 1

I changed the format of everything and it worked.
public function createSlider(AdminRequest $request)
{
$slider = new Sliders(array(
'title' => $request->get('title'),
'description' => $request->get('description'),
'link' => $request->get('link')
));
$slider->save();
$imageName = $slider->title .'_gin_slider'. '.' .
$request->file('image')->getClientOriginalExtension();
$request->file('image')->move(
base_path() . '/public/assets/image', $imageName
);
$slider->image = $imageName;
$slider->save();
return redirect('/admin');
}

Answer 2

For further reference: the issue occurs when your controller, router or middleware method does not return a valid response. You should always return a response from your root called method, whether it's actual data or a redirect. In case of middlewares it can be the request itself via Closure.
In case of controllers it should be:
public function index()
{
return response() || redirect()->back();
}
In case of middlewares:
public function handle($request, Closure $next)
{
return $next($request) || response() || redirect()->back();
}
In case of route closures:
Route::get('foo/bar', function(){
return response() || redirect()->back();
});
|| means 'or'