Yii将相关数据导入GridView

Question

My view lets the user see a person's details, including the families they are in. This is done in the DB with a Person table, Family table, and a familyMembership link table between the two.

The relationship in the CActiveRecord model for Person is as such:

'families' => array(self::MANY_MANY, 'Family', 'familymembership(Person, Family)'),

In my person controller, I am wanting to pass a variable into the view that has the related data in a way that TbGridView (CGridView but Bootstrap) will accept (a data provider). The controller calls the person model's getFamilies() function:

public function getFamilies() {
    // returns an array of Family objects related to this Person model
    $familiesArray = $this->getRelated('families');
    // puts this array into a CArrayDataProvider
    $families = new CArrayDataProvider($familiesArray);
    return $families;
}

The return value goes back to the controller, which is then handed through in the renderPartial() call. The view has a TbGridView widget initialisation like this:

$this->widget('bootstrap.widgets.TbGridView', 
            array(
                //the CArrayDataProvider from the model function
                'dataProvider' => $families, 
                'columns' => array(
                    array(
                        'name' => 'Family Name',
                        // Example field from Family model
                        'value' => '$data->familyName' 
                    )
                )
        ));

However, in doing this I am getting the following error: 'Property "Family.id" is not defined. (D:\wamp\www\yii\framework\base\CComponent.php:130)'

The Family model does not have an id property, and I don't understand why the widget is looking for such.

What's going wrong here?

Thanks.

Answer 1

Quoting the doc from Yii Class Reference, you have to provide a keyField:

Elements in the raw data array may be either objects (e.g. model objects) or associative arrays (e.g. query results of DAO). Make sure to set the keyField property to the name of the field that uniquely identifies a data record or false if you do not have such a field.

By default keyField will be set to "id", so you need to overwrite it with your Family model primary key :

<?php
$familyDataProvider = new CArrayDataProvider($rawData, array(
    'keyField' => 'yourPkNameHere',
));