Populating CGridView one to many relation - yii

Question

In my project one of the model named types having multiple relation to other models the criteria with part is giving below its like
$criteria->with = array(
'category',
'subCategory',
'accountsSupplierPriceDetails' => array(
'with' => 'serviceLevel'
)
);
the relationship goes like
types - category - relation(1-1)
types - subcategory - relation(1-1)
types - accountsSupplierPriceDetails - relation(1-1)
accountsSupplierPriceDetails - serviceLevel - relation(1-n)
my problem is how to display the names from each table in a grid. the result of (1-n) should be displayed in a dropdownbox. when i try to access the data from column it shows the error Trying to get property of non-object ($data->accountsSupplierPriceDetails->serviceLevel ->name). can anyone please help me.
Thanks in advance.

Answer 1

in my view i create a cgridview with 5 rows in which one row data is populated using dropdownlist.
<div style="width:700px; height:auto;">
<?php
$widget = $this->widget('zii.widgets.grid.CGridView', array(
'id' => 'response-grid',
'dataProvider' => $pickdataset->pickCategorylistingForMain(),
'cssFile' => Yii::app()->baseUrl . '/media/css/gridview.css',
'summaryText' => '',
'ajaxUpdate' => 'response-grid',
'enablePagination' => true,
'pager' => array(
'class' => 'LinkPager',
'cssFile' => false,
'header' => false,
'firstPageLabel' => 'First',
'prevPageLabel' => 'Previous',
'nextPageLabel' => 'Next',
'lastPageLabel' => 'Last',
),
'columns' => array(
array(
'name' => 'id',
'header' => '#',
'value' => '$this->grid->dataProvider->pagination->currentPage * $this->grid->dataProvider->pagination->pageSize + ($row+1)',
),
array(
'type' => 'raw',
'name' => 'categoryExt',
'header' => 'Category',
),
array(
'type' => 'raw',
'header' => 'Sub Category',
'value' => '$data->subCategory->name',
),
array(
'type' => 'raw',
'name' => 'locationExt',
'header' => 'Location',
),
array(
'type' => 'raw',
'header' => 'Name',
'value' => 'CHtml::dropDownList($data->corporate_id."-".$data->category_id."-".$data->sub_category_id."-".$data->location_id,"",popDropBox($data->masterCategoryServiceLevels), array("class" => "listbox"), array("empty" => "Select a Location"))',
),
array(
'type' => 'raw',
'header' => 'Pick',
'value' => 'CHtml::image(Yii::app()->baseUrl . "/media/images/edit_icon.png",$data->corporate_id."-".$data->category_id."-".$data->sub_category_id."-".$data->location_id,array("title" => "Select this Combination"))',
),
),));
function popDropBox($data)
{
$list = array();
foreach ($data as $row)
{
$list[$row->serviceLevel->id] = $row->serviceLevel->name;
}
return $list;
}
?>
</div>
the relation in model is:
'masterCategoryServiceLevels' => array(self::HAS_MANY, 'MasterCategoryServiceLevel', 'category_template_id'),
'corporate' => array(self::BELONGS_TO, 'AccountsCorporate', 'corporate_id'),
'category' => array(self::BELONGS_TO, 'MasterCategory', 'category_id'),
'subCategory' => array(self::BELONGS_TO, 'MasterCategory', 'sub_category_id'),
'location' => array(self::BELONGS_TO, 'MasterLocation', 'location_id'),
the row is
array(
'type' => 'raw',
'header' => 'Name',
'value' => 'CHtml::dropDownList($data->corporate_id."-".$data->category_id."-".$data->sub_category_id."-".$data->location_id,"",popDropBox($data->masterCategoryServiceLevels), array("class" => "listbox"), array("empty" => "Select a Location"))',
),
and i use a function to create dropdown data is
function popDropBox($data)
{
$list = array();
foreach ($data as $row)
{
$list[$row->serviceLevel->id] = $row->serviceLevel->name;
}
return $list;
}
please comment if you have any doubt. i am free to share... have a nice day SO friends... wishes and prayers.