eventespresso / event-espresso-core

        // EEH_Debug_Tools::printr( $fieldValues, '$fieldValues  <br /><span style="font-size:10px;font-weight:normal;">' . __FILE__ . '<br />line no: ' . __LINE__ . '</span>', 'auto' );

        // verify client code has not passed any invalid field names

        foreach ($fieldValues as $field_name => $field_value) {

            if ( ! isset($model_fields[$field_name])) {

                throw new EE_Error(sprintf(__("Invalid field (%s) passed to constructor of %s. Allowed fields are :%s",

                    "event_espresso"), $field_name, get_class($this), implode(", ", array_keys($model_fields))));

            }

        }

        // EEH_Debug_Tools::printr( $model_fields, '$model_fields  <br /><span style="font-size:10px;font-weight:normal;">' . __FILE__ . '<br />line no: ' . __LINE__ . '</span>', 'auto' );

    public function related_settings_for($relation_name)

    {

        $relatedModels = $this->relation_settings();

        if (! array_key_exists($relation_name, $relatedModels)) {

            throw new EE_Error(

                sprintf(

                    __('Cannot get %s related to %s. There is no model relation of that type. There is, however, %s...',

                        'event_espresso'),

                    $relation_name,

                    $this->_get_class_name(),

                    implode(', ', array_keys($relatedModels))

                )

            );

        }

        return $relatedModels[$relation_name];

    }