File Not Updating in Laravel - php

Question

I have Laravel 5.5 Application. I am trying to update my post and image is not updating. When I die and dump the following
dd($request->hasFile('image'));
it outputs false
View:
<div class="box-body">
{{ Form::model($slider, array('route' => array('admin.slider.update', $slider->title), 'method' => 'PUT')) }}
<div class="form-group">
{!! Form::label('title', 'Title') !!}
{!! Form::text('title', null, ['class' => 'form-control', 'placeholder' => 'Title']) !!}
</div>
<div class="form-group">
{!! Form::label('content', 'Content') !!}
{!! Form::textarea('content', null, ['class' => 'form-control', 'placeholder' => 'Content']) !!}
</div>
<div class="row">
<div class="col-md-2 col-xs-6">
<div class="form-group">
{!! Form::label('image', 'Change Image') !!}
{!! Form::file('image') !!}
</div>
</div>
<div class="col-md-10 col-xs-6">
<img src="{{ secure_asset('images/slider/thumb/' . $slider->image )}}" class="img-responsive" width="150">
{{ $slider->image }}
</div>
</div>
{!! Form::submit('Submit', array( 'class'=>'btn btn-info' )) !!}
{!! Form::close() !!}
</div>
Controller:
public function sliderupdate($slider, Request $request){
$slider = Slider::where('title', $slider)->firstorfail();
$slider->title = $request->title;
$slider->content = $request->content;
dd($request->hasFile('image'));
if ($request->hasFile('image')) {
$file = Input::file('image');
//getting timestamp
$timestamp = str_replace([' ', ':'], '-', Carbon::now()->toDateTimeString());
$name = $timestamp. '-' .$file->getClientOriginalName();
$file->move(public_path().'/images/slider/', $name);
$slider->image = $name;
$thumb = Image::make(public_path().'/images/slider/' . $name)->resize(1920,1080)->save(public_path().'/images/slider/thumb/' . $name, 90);
}
$slider->save();
return redirect()->route('admin.slider.edit', $slider->title)->with('status', 'Update Success');
}
Route:
Route::put('admin/slider/{slider}', [
'uses' => 'AdminController#sliderupdate',
'as' => 'admin.slider.update'
]);
Something I am missing, but couldn't find out what it is.

Answer 1

You are missing the 'files' => true option. You need files option in the array passed to Form::open or Form::model if you are going to accept files.
{{ Form::model($slider, [
'route' => ['admin.slider.update', $slider->title],
'method' => 'PUT',
'files' => true
]) }}

Answer 2

Method:
public function slideredit($slider){
$slider = Slider::where('title', $slider)->firstOrFail();
return view('admin.slider.edit', compact('slider'));
}
Change your Form to
{!! Form::model($slider, ['route' => ['admin.slider.post', $slider->title, 'method' => 'PUT', 'files'=>true]]) !!}
<div class="modal-body">
<!-- text input -->
<div class="form-group">
{!! Form::label('title', 'Title') !!}
{!! Form::text('title', null, ['class' => 'form-control', 'placeholder' => 'Title']) !!}
</div>
<div class="form-group">
{!! Form::label('content', 'Content') !!}
{!! Form::textarea('content', null, ['class' => 'form-control', 'placeholder' => 'Content']) !!}
</div>
<div class="form-group">
{!! Form::label('image', 'Choose Image') !!}
{!! Form::file('image') !!}
</div>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default pull-left" data-dismiss="modal">Close</button>
{!! Form::submit('Submit', array( 'class'=>'btn btn-info')) !!}
</div>
{!! Form::close() !!}