Laravel 5 Call to undefined method Illuminate\Database\Query\Builder::method() - php

Question

I have projects which hasMany users, and users belongsTo a project.
I want to count the total amount of users a project has so I need to link them.
This way I'm getting a Call to undefined method Illuminate\Database\Query\Builder::user() error.
What am I doing wrong?
Controller:
class ProjectController extends Controller
{
private $project;
public function __construct(Project $project){
$this->project = $project;
// $this->project = $project
// ->with('user');
}
public function index(Project $project)
{
$projects = $project->with('user')->get();
$currenttime = Carbon::now();
// return view('project.index', array('projects' => $projects, 'currenttime' => $currenttime));
return view('user.index', compact('projects'));
}
}
Model user:
public function project(){
return $this->belongsTo('App\Project', 'project_id','id');
}
Model project:
public function users() {
return $this->hasMany('App\User', 'id');
}
HTML/Blade:
#if(isset($projects))
<table class="table table-striped table-hover table-dynamic datatable">
<thead>
<tr>
<th>{{ trans('common.project') }}</th>
<th>{{ trans('common.workers') }}</th>
<th>{{ trans('common.completion_date') }}</th>
<th>{{ trans('common.status')}}</th>
</tr>
</thead>
<tbody>
#foreach($projects as $project)
<tr>
<td>{!! link_to_route('project.edit', $project->name, [$project->id] )!!}</td>
<td>{{ $project->id }}</td>
<td>{{ $project->completion_date }}</td>
#if (($project->completed) == 1)
<td><span class="label label-success">{{ trans('common.completed') }}</span></td>
#elseif(($project->completion_date) < $currenttime )
<td><span class="label label-danger">{{ trans('common.toolate') }}</span></td>
#elseif(($project->active) == 0)
<td><span class="label label-default">{{ trans('common.inactive') }}</span></td>
#else
<td><span class="label label-warning">{{ trans('common.inprogress') }}</span></td>
#endif
</tr>
#endforeach
</tbody>
</table>
#endif

Answer 1

You have to provide the method name that defines the relationship.I mean users not user
public function index(Project $project)
{
$projects = $project->with('users')->get();
$currenttime = Carbon::now();
// return view('project.index', array('projects' => $projects, 'currenttime' => $currenttime));
return view('user.index', compact('projects'));
}