Vfrdtyky

Having a the paradigm :
- stations could have 0..N forecast models associated.
- each forecast model could have 0..N stations related.

It means stations and forecasts tables get related by the in between table named station_forecast.

Following code fails shooting the error when twig file try to read the forecasts collection from a station object:

An exception has been thrown during the rendering of a template

Notice: Undefined index: station in /vendor/doctrine/lib/Doctrine/ORM/Persisters/BasicEntityPersister.php line 1280

Station:

/** 

 * @ORMOneToMany(targetEntity="ForecastBundleEntityStationForecast", mappedBy="***station***")   <-- THIS 'STATION' THE ERROR REFERS.

 */

protected $forecasts`;



public function __construct()

{

    $this->forecasts = new DoctrineCommonCollectionsArrayCollection();

}



/**

 * @return DoctrineCommonCollectionsCollection 

 */

function getForecasts() {

    return $this->forecasts;

}



/**

 * @param ForecastBundleEntityStationForecast $station_forecast

 */

public function addForecasts(StationForecast $station_forecast)

{

    $this->forecasts = $station_forecast;

}

StationForecast

/**

 * @ORMId

 * @ORMColumn(name="station_id", type="integer", nullable=false)  

 * @ORMManyToOne(targetEntity="EstacionsBundleEntityStation", inversedBy="forecasts")

 */

protected $station;



/**

 * @ORMId

 * @ORMColumn(name="forecast_id", type="integer", nullable=false)  

 * @ORMManyToOne(targetEntity="ForecastBundleEntityForecast", inversedBy="stations")

 */

protected $forecast;

Forecast

/**

 * @ORMOneToMany(targetEntity="ForecastBundleEntityStationForecast", mappedBy="forecast")

 */

protected $stations;



public function addEstacions(ForecastBundleEntityStationForecast $stations)

{

    $this->stations = $stations;

}



/**

 * @return DoctrineCommonCollectionsCollection 

 */

public function getStations()

{

    return $this->stations;

}



public function addStationForecast(ForecastBundleEntityStationForecast $stations)

{

    $this->stations = $stations;

}

Do you know what could happen? I'm getting crazy...

You don’t need the StationForcast class at all! Just keep Station & Forcast, and doctrine will still create and manage the joint table (station_forcast) for you.

Station

class Station

{

    /** 

     * @ORMManyToMany(targetEntity="Forcast", mappedBy="stations")

     */

    protected $forecasts;



    public function __construct()

    {

        $this->forecasts = new ArrayCollection();

    }



    /**

     * @return Collection 

     */

    function getForecasts() {

        return $this->forecasts;

    }



    /**

     * @param Forecast $forecast

     */

    public function addForecast(Forecast $forecast)

    {

        if (!$this->forcasts->contains($forcast)

        {

            $this->forecasts->add($forecast);

            $forcast->addStation($this);

        }

    }

}

Forcast

class Forcast

{

    /**

     * @ORMManyToMany(targetEntity="Station", inversedBy="forecasts")

     */

    protected $stations;



    public function __construct()

    {

        $this->stations = new ArrayCollection();

    }



    /**

     * @return Collection 

     */

    public function getStations()

    {

        return $this->stations;

    }



    /**

     * @param Station $station

     */

    public function addStation(Station $station)

    {

        if (!$this->stations->contains($station)

        {

            $this->stations->add($station);

            $station->addForcast($this);

        }

    }

}