Laravel ErrorException Undefined offset: 0 - runtime-error

Question

I am facing this error in laravel 5.
Here is the controller function in which I am facing the error (in the line where I do ($vendor->client[0]->id) :
public function show($username) {
Log::info('Vendors Controller : show function with '.$username);
$vendor = VendorProfile::where('username', $username)->first();
$output = print_r($vendor,1);
Log::info($output);
if($vendor) {
Log::info('client '. $vendor->client);
$client = Client::find($vendor->client[0]->id);
$title = $client->profile->company_name;
$output is printed as:
[2015-06-15 21:34:43] local.INFO: App\models\VendorProfile Object
(
[table:protected] => vendor_profile
[guarded:protected] => Array
(
[0] => id
)
[morphClass:protected] => MorphVendorProfile
[connection:protected] =>
[primaryKey:protected] => id
[perPage:protected] => 15
[incrementing] => 1
[timestamps] => 1
[attributes:protected] => Array
(
[id] => 16
[first_name] => some name
[last_name] =>
[company_name] => some name
[contact_number] => 1234567890
[username] => username
[profile_photo] =>
[photo_mime_type] =>
[cover_photo] =>
[cover_photo_mime_type] =>
[address] =>
[city_id] => 1
[zip_code] =>
[story] =>
[establishment_date] =>
[pricing] =>
[education] =>
[services_offered] =>
[assignments_undertook] =>
[advanced_fees] =>
[equipments] =>
[about_service] =>
[coins] => 500
[created_at] => 2015-06-15 20:21:45
[updated_at] => 2015-06-15 20:21:45
)
[original:protected] => Array
(
[id] => 16
[first_name] => some name
[last_name] =>
[company_name] => some name
[contact_number] => 1234567890
[username] => username
[profile_photo] =>
[photo_mime_type] =>
[cover_photo] =>
[cover_photo_mime_type] =>
[address] =>
[city_id] => 1
[zip_code] =>
[story] =>
[establishment_date] =>
[pricing] =>
[education] =>
[services_offered] =>
[assignments_undertook] =>
[advanced_fees] =>
[equipments] =>
[about_service] =>
[coins] => 500
[created_at] => 2015-06-15 20:21:45
[updated_at] => 2015-06-15 20:21:45
)
[relations:protected] => Array
(
)
[hidden:protected] => Array
(
)
[visible:protected] => Array
(
)
[appends:protected] => Array
(
)
[fillable:protected] => Array
(
)
[dates:protected] => Array
(
)
[casts:protected] => Array
(
)
[touches:protected] => Array
(
)
[observables:protected] => Array
(
)
[with:protected] => Array
(
)
[exists] => 1
)
The models VendorProfile and Client are connected as:
in VendorProfile model:
protected $morphClass = 'MorphVendorProfile';
// Defining 'Polymorphic' Relationship with Client Model
public function client() {
return $this->morphMany('App\models\Client', 'profile');
}
and I have an alias in my config/app.php:
'MorphVendorProfile'=> 'App\models\VendorProfile'
in Client model :
public function profile() {
return $this->morphTo();
}
Update:
This error has occurred while migrating the code from laravel 4.2 to laravel 5. So right now, when I run the previous code that was based on 4.2 version with the SAME database, and it didn't throw me any error, so I think problem is with the code, not database. I am certain that there is a problem with 'morph' relationships, I had to modify a bit in the process of migrating to make it work on other pages.
here is the morphTo function in my Eloquent/Model.php:
/**
* Define a polymorphic, inverse one-to-one or many relationship.
*
* #param string $name
* #param string $type
* #param string $id
* #return \Illuminate\Database\Eloquent\Relations\MorphTo
*/
public function morphTo($name = null, $type = null, $id = null)
{
// If no name is provided, we will use the backtrace to get the function name
// since that is most likely the name of the polymorphic interface. We can
// use that to get both the class and foreign key that will be utilized.
if (is_null($name))
{
list(, $caller) = debug_backtrace(false, 2);
$name = snake_case($caller['function']);
}
list($type, $id) = $this->getMorphs($name, $type, $id);
// If the type value is null it is probably safe to assume we're eager loading
// the relationship. When that is the case we will pass in a dummy query as
// there are multiple types in the morph and we can't use single queries.
if (is_null($class = $this->$type))
{
Log::info('eagerly loading');
return new MorphTo(
$this->newQuery(), $this, $id, null, $type, $name
);
}
// If we are not eager loading the relationship we will essentially treat this
// as a belongs-to style relationship since morph-to extends that class and
// we will pass in the appropriate values so that it behaves as expected.
else
{
Log::info('not eagerly loading');
Log::info($class);
$instance = \App::make('\App\models\\'.$class);
$output = print_r($instance,1);
Log::info('*'.$output.'*');
return new MorphTo(
$instance->newQuery(), $this, $id, $instance->getKeyName(), $type, $name
);
}
}

Answer 1

Check your namespaces. Make sure that the polymorphic relationship that you have setup references the full namespace in both the Vendor and Client models