Laravel chosen-select retrieving old value from the form - laravel

Question

I am trying to retrieve old value from my form on the edit form, but it seems impossible to find an answer, because everyone in the world decided to use Form::select from laravelcollective/html library. I am trying to use the regular HTML to work this, and it's not able to retrieve old value from the form.
This is my HTML Code.
<div class="col-xs-12 form-group">
<label class="control-label">Role*</label>
<select name="roles[]" data-placeholder="Choose a Role for this User..." class="chosen-select" multiple tabindex="4">
<option value="">Select</option>
#foreach ($roles as $key => $value)
<option value="{{ $key }}" {{ in_array($key, old("roles")) ? "selected":"") }} >{{ $value }}</option>
#endforeach
</select>
</div>
This is my controller code.
public function edit($id)
{
$roles = Role::get()->pluck('name', 'id');
$user = User::findOrFail($id);
return view('admin.users.edit', compact('user', 'roles'));
}
I am trying to convert the following into regular html
<div class="row">
<div class="col-xs-12 form-group">
{!! Form::label('role', trans('global.users.fields.role').'*', ['class' => 'control-label']) !!}
{!! Form::select('role[]', $roles, old('role') ? old('role') : $user->role->pluck('id')->toArray(), ['class' => 'form-control select2', 'multiple' => 'multiple', 'required' => '']) !!}
<p class="help-block"></p>
#if($errors->has('role'))
<p class="help-block">
{{ $errors->first('role') }}
</p>
#endif
</div>
</div>

Answer 1

Try this:
<div class="col-xs-12 form-group {{ $errors->has('role') ? 'has-error' : '' }}">
<label for="role" class="control-label">Role *</label>
<select class="form-control select2" name="role[]" id="role" required multiple>
#foreach ($roles as $id => $label)
<option value="{{ $id }}" #if (collect(old('role', $user->role->pluck('id') ?? []))->contains($id)) selected="selected" #endif>{{ $label }}</option>
#endforeach
</select>
<span class="help-block">
#if ($errors->has('role'))
{{ $errors->first('role') }}
#endif
</span>
</div>
In your controller's update/store function, make sure you either use the built-in validation methods, which will populate the session on any errors.
or
If you have other checks, make sure you return the input when redirecting back.
return redirect()->back()
->withInput() // <- return input with redirect, will populate session
->with('error', 'Persist failed'); // <- optional