Laravel cant sync a many to many relationship - php

Question

I am am trying to save to my database, and as part of that save I am trying to sync my many to many relationship, however I am getting the following error from my API,
"BadMethodCallException","message":"Call to undefined method Illuminate\\Database\\Query\\Builder::sync()"
I would have thought that this is because the relationships I have in my model are not many to many so cant be synced, but they look correct to me,
class Organisation extends Eloquent {
//Organsiation __has_many__ users (members)
public function users()
{
return $this->belongsToMany('User')->withPivot('is_admin');
}
//Organisation __has_many__ clients
public function clients()
{
return $this->belongsToMany('Client');
}
//Organisation __has_many__ teams
public function teams()
{
return $this->belongsToMany('Team');
}
//Organisation __has_many__ projects
public function projects()
{
return $this->hasMany('Project');
}
}
class User extends Eloquent implements UserInterface, RemindableInterface {
use UserTrait, RemindableTrait;
/**
* The database table used by the model.
*
* #var string
*/
protected $table = 'users';
/**
* The attributes excluded from the model's JSON form.
*
* #var array
*/
protected $hidden = array('password', 'remember_token');
public function organisations()
{
return $this->belongsToMany('Organisation')->withPivot('is_admin');
}
}
I am running the sync after a successful save,
if(isset($members)) {
$organisation->users()->sync($members);
}
and members is certainly set. The organsisation is created in the following way,
public function create()
{
//
$postData = Input::all();
$rules = array(
'name' => 'required',
);
$validation = Validator::make(Input::all(), $rules);
if($validation->fails()) {
return Response::json( $validation->messages()->first(), 500);
} else {
$organisation = new Organisation;
// Save the basic organistion data.
$organisation->name = $postData['name'];
$organisation->information = $postData['information'];
$organisation->type = 'organisation';
/*
* Create an array of users that can used for syncinng the many-to-many relationship
* Loop the array to assign admins to the organisation also.
*/
if(isset($postData['members'])) {
$members = array();
foreach($postData['members'] as $member) {
if(isset($postData['admin'][$member['id']]) && $postData['admin'][$member['id']] == "on") {
$members[$member['id']] = array(
'is_admin' => 1
);
} else {
$members[$member['id']] = array(
'is_admin' => 0
);
}
}
}
/*
* Create an array of clients so we can sync the relationship easily
*
*/
if(isset($postData['clients'])) {
$clients = array();
foreach($postData['clients'] as $client) {
$clients[] = $client['id'];
}
}
/*
* Create an array of teams so we can sync the relationship easily
*
*/
if(isset($postData['teams'])) {
$teams = array();
foreach($postData['teams'] as $team) {
$teams[] = $team['id'];
}
}
/*
* Create an array of projects so we can sync the relationship easily
*
*/
if(isset($postData['projects'])) {
$projects = array();
foreach($postData['projects'] as $project) {
$projects[] = $project['id'];
}
}
if( $organisation->save() ) {
if(isset($members)) {
$organisation->users()->sync($members);
}
if(isset($teams)) {
$organisation->teams()->sync($teams);
}
if(isset($teams)) {
$organisation->clients()->sync($clients);
}
if(isset($projects)) {
$organisation->projects()->sync($projects);
}
$organisation->load('users');
$organisation->load('teams');
$organisation->load('clients');
$organisation->load('projects');
return Response::make($organisation, 200);
} else {
return Response::make("Something has gone wrong", 500);
}
}
}

Answer 1

I was looking a while for the problem and I didn't see any (I was looking at first sync as you suggested) but I looked again and I think the problem is not syncing users here. Probably the problem is:
if(isset($projects)) {
$organisation->projects()->sync($projects);
}
You are trying to use sync on 1 to many relationship because you defined it this way:
return $this->hasMany('Project');
So either change hasMany here into belongsToMany if it's many to many relationship (that's probably the case) or don't use sync here for $projects because it works only for many to many relationship.