PHP, framework - Class must be declared abstract

Question

I'm introducing to Phalcon, a php framework, by following the tutorial: https://docs.phalconphp.com/en/latest/reference/tutorial-rest.html

I'm facing with this problem: I have this error in the code below

class Robots must be declared abstract or implement methods 'getConnectionService(), setForceExists() etc..'

<?php

use Phalcon\Mvc\Model;
use Phalcon\Mvc\Model\Message;
use Phalcon\Mvc\Model\Validator\Uniqueness;
use Phalcon\Mvc\Model\Validator\InclusionIn;

class Robots extends Model{


public function validation()
{
    // Type must be: droid, mechanical or virtual
    $this->validate(
        new InclusionIn(
            array(
                "field"  => "type",
                "domain" => array(
                    "droid",
                    "mechanical",
                    "virtual"
                )
            )
        )
    );

    // Robot name must be unique
    $this->validate(
        new Uniqueness(
            array(
                "field"   => "name",
                "message" => "The robot name must be unique"
            )
        )
    );

    // Year cannot be less than zero
    if ($this->year < 0) {
        $this->appendMessage(new Message("The year cannot be less than zero"));
    }

    // Check if any messages have been produced
    if ($this->validationHasFailed() == true) {
        return false;
    }
}
} 
?>

And even if I try to execute an HTTP request i get:

Cannot instantiate abstract class Robots

Any ideas?

Answer 1

You probably didn't set your database service properly. Make sure that:

• The service name is db (I've experienced problems changing the default services names)
• You have set the db service in your main $di (some might instantiate another DI container and isolate the database service there)
• Always use $di->setShared(...) for registering global services

Please provide more information and will be glad to help.