UWrelBelongsTo.php

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<?php

class UWrelBelongsTo
{
    public $params = array(
        'modelName' => '',
        'optionName' => '',
        'emptyField' => '',
        'relationName' => '',
    );

    public function init()
    {
        return array(
            'name' => __CLASS__,
            'label' => UserModule::t('Relation Belongs To', array(), __CLASS__),
            'fieldType' => array('INTEGER'),
            'params' => $this->params,
            'paramsLabels' => array(
                'modelName' => UserModule::t('Model Name', array(), __CLASS__),
                'optionName' => UserModule::t('Lable field name', array(), __CLASS__),
                'emptyField' => UserModule::t('Empty item name', array(), __CLASS__),
                'relationName' => UserModule::t('Profile model relation name', array(), __CLASS__),
            ),
        );
    }

    public function setAttributes($value, $model, $field_varname)
    {
        return $value;
    }

    public function viewAttribute($model, $field)
    {
        $relation = $model->relations();
        if ($this->params['relationName'] && isset($relation[$this->params['relationName']])) {
            $m = $model->__get($this->params['relationName']);
        } else {
            $m = CActiveRecord::model($this->params['modelName'])->findByPk($model->getAttribute($field->varname));
        }

        if ($m) {
            return (($this->params['optionName']) ? $m->getAttribute($this->params['optionName']) : $m->id);
        } else {
            return $this->params['emptyField'];
        }
    }

    public function editAttribute($model, $field, $htmlOptions = array())
    {
        $list = array();
        if ($this->params['emptyField']) {
            $list[0] = $this->params['emptyField'];
        }

        $models = CActiveRecord::model($this->params['modelName'])->findAll();
        foreach ($models as $m) {
            $list[$m->id] = (($this->params['optionName']) ? $m->getAttribute($this->params['optionName']) : $m->id);
        }

        return CHtml::activeDropDownList($model, $field->varname, $list, $htmlOptions = array());
    }
}