Magento Issues with category dropdown - magento

Question

I need to display all the subcategories under root category name using . I am unable to find the root category details. Root category name is displaying as '/' How to overcome this issue?
Currently i am getting all the categories including root categories (/).
My code is as in below:
public function toOptionArray()
{
$categories = array();
$categoryCollection = Mage::getResourceModel('catalog/category_collection')->addFieldToFilter(
'path',
array('neq' => '1')
);
foreach ($categoryCollection as $category) {
var_dump($category->getData());
echo '<br />';
$category = Mage::getModel('catalog/category')->load($category->getId());
$categories[$category->getId()] = $category->getUrlPath();
}
return $categories;
}
protected function _renderOptions(Varien_Object $row)
{
$categories = $this->getColumn()->getOptions();
$html = sprintf('<select class="category_select" name="mapping[%s]">', $row->getData('reference_id'));
$html .= '<option value=""></option>';
foreach ($categories as $id => $name) {
$html .= sprintf(
'<option value="%s"%s>%s</option>',
$this->escapeHtml($id),
$id == $row->getData('category_id') ? ' selected="selected"' : '',
$this->escapeHtml($name)
);
}
$html .= '</select>';
return $html;
}
I need to add into the category dropdown, which is subcategories displaying under root category name.
Can anyone help me please.
Thank You.

Answer 1

I fixed the issue using following:
protected function _renderOptions(Varien_Object $row)
{
$categories = $this->getColumn()->getOptions();
$parentIdArray = array();
foreach ($categories as $id => $name) {
$category = Mage::getModel('catalog/category')->load($id);
$parentId = $category->getParentId();
if($parentId == 1){
$parentIdArray[] = $id;
}
}
$html = sprintf('<select class="category_select" name="mapping[%s]">', $row->getData('reference_id'));
$html .= '<option value=""></option>';
foreach ($parentIdArray as $parentId) {
$parentCategory = Mage::getModel('catalog/category')->load($parentId);
$name = $parentCategory->getName();
$html .= sprintf(
'<optgroup label="'.$name.'">
<option value="%s"%s>%s</option>
</optgroup>',
$this->escapeHtml($parentId),
$parentId == $row->getData('category_id') ? ' selected="selected"' : '',
$this->escapeHtml($name)
);
$categories = Mage::getModel('catalog/category')->getCategories($parentId);
$subCategories = $this->get_categories($categories);
foreach ($subCategories as $id => $name) {
$html .= sprintf(
'<option style="padding-left: 10px;" value="%s"%s>%s</option>',
$this->escapeHtml($id),
$id == $row->getData('category_id') ? ' selected="selected"' : '',
$this->escapeHtml($name)
);
}
}
$html .= '</select>';
return $html;
}
public function get_categories($categories) {
$subCategories = array();
foreach($categories as $category) {
$subCategory = Mage::getModel('catalog/category')->load($category->getId());
$subCategories[$subCategory->getId()] = $subCategory->getUrlPath();
if($category->hasChildren()) {
$children = Mage::getModel('catalog/category')->getCategories($category->getId());
$childrenCategories = $this->get_categories($children);
foreach ($childrenCategories as $id => $name) {
$subCategories[$id] = $name;
}
}
}
return $subCategories;
}