Laravel 5 pivot table project<->user - php

Question

I find the pivot tables pretty complicated and I don't see what to do next or what I am doing wrong, I've found some tutorials but didn't help me in my needs.
I have a projects and users with a many-to-many relation.
One project hasMany users and One user hasMany projects.
What I have now leaves projects without a relationship to a user.
This is what I have so far:
Projects table
class CreateProjectsTable extends Migration {
public function up()
{
Schema::create('projects', function(Blueprint $table)
{
$table->increments('id');
$table->string('name');
$table->date('completion_date');
$table->integer('completed')->default(0);
$table->integer('active')->default(0);
$table->timestamps();
});
}
Users table
class CreateUsersTable extends Migration {
public function up()
{
Schema::create('users', function(Blueprint $table)
{
$table->increments('id');
$table->integer('company_id');
$table->integer('project_id');
$table->integer('usertype_id')->default(0);
$table->string('username');
$table->string('password');
});
}
Project User table (pivot)
class CreateProjectUsersTable extends Migration {
public function up()
{
Schema::create('project_users', function(Blueprint $table)
{
$table->increments('id');
$table->integer('project_id')->references('id')->on('project');;
$table->integer('user_id')->references('id')->on('user');;
});
}
User model
public function projects() {
return $this->belongsToMany('App\Project', 'project_users', 'user_id', 'project_id');
}
Project model
public function users() {
return $this->belongsToMany('App\User', 'project_users', 'project_id', 'user_id');
}
Project controller
public function index(Project $project)
{
$projects = $project->with('users')->get();
dd($projects);
$currenttime = Carbon::now();
//return view('project.index', array('projects' => $projects, 'currenttime' => $currenttime));
return view('user.index', compact('projects'));
}

Answer 1

The relationship in your User model is not correct. You have to swap the keys.
public function projects() {
return $this->belongsToMany('App\Project', 'project_users', 'user_id', 'project_id');
}
Edit regarding latest comment:
Don't think about the pivot table, as long as you have your relations setup correctly, which I believe they are, Laravel handles all of that for you.
Now $projects->users does not make any sense because projects does not have users. projects is just a collection of Project. Each Project within that collection will have a users relation. You would have to iterate through the collection to view each Project's users.
foreach($projects as $project) {
foreach($project->users as $user) {
echo $user;
}
}