Laravel get back multiple selection from model - php

Question

I have User Role models defined in a many-to-many relationship. When creating user I have a multiple select box to pick roles for specific user:
<div class="col-lg-6 col-md-6 col-sm-6 col-xs-6">
<div class="form-group">
<label for="roles">Roles</label>
{!! Form::select('roles[]',$roles, null,['class' => 'form-control selectpicker','multiple' => 'true']) !!}
</div>
</div>
This is a form which is shared in both create and edit methods, but for edit it is like this:
{!! Form::model($patient, ['route' => ['patients.update', $patient->id], 'method' => 'PUT']) !!}
#include('patients.partials.form')
{!! Form::close()!!}
When I try to edit user with roles, no roles get selected...this is the controller
public function edit(User $user)
{
$clinics = Clinic::pluck('name', 'id');
$roles = Role::pluck('display_name', 'id');
$states = State::pluck('name', 'id');
$cities = City::pluck('name', 'id');
return view('users.edit', compact('user', 'clinics', 'states', 'cities', 'roles'));
}
EDIT:
I handle update like this:
public function update(Request $request, User $user)
{
if ($request->has('password'))
$user->update($request->except('password_confirmation'));
else
$user->update($request->except('password', 'password_confirmation'));
$user->roles()->sync($request->roles);
return redirect('users')->with('status', 'User Updated!');
}
Part of the request dump:
"roles": [
"1",
"4"
],
"first_name": "xy",
"last_name": "yx",

Answer 1

The third parameter of the form select takes the selected array of item. Make the following changes for your selected roles to show up when you edit.
// Pass the current user roles
public function edit(User $user)
{
$userRoles = $user->roles->pluck('id');
$clinics = Clinic::pluck('name', 'id');
$roles = Role::pluck('display_name', 'id');
$states = State::pluck('name', 'id');
$cities = City::pluck('name', 'id');
return view('users.edit', compact('user', 'userRoles', 'clinics', 'states', 'cities', 'roles'));
}
// Pass the selected list of roles
{!! Form::model($patient, ['route' => ['patients.update', $patient->id], 'method' => 'PUT']) !!}
#include('patients.partials.form', ['selected' => $userRoles])
{!! Form::close()!!}
// Check if a selected value is given and use it. This makes it reusable with create and edit.
{!! Form::select('roles[]', $roles, isset($selected) ? $selected : null, [
'class' => 'form-control selectpicker',
'multiple' => 'true'
]) !!}