Hi Torsten and Philipp,
inspired by you, i've also got a working solution with infinite
recursion in between. It is not perfect yet and everything is written
into the repository class, but it is working.
### CategoryRepository:
/**
* findAllAsRecursiveTreeArray
*
* @param \Vendor\Ext\Domain\Model\Category $selectedCategory
* @return array $categories
*/
public function findAllAsRecursiveTreeArray($selectedCategory = NULL) {
$categoriesArray = $this->findAllAsArray($selectedCategory);
$categoriesTree = $this->buildSubcategories($categoriesArray, NULL);
return $categoriesTree;
}
/**
* findAllAsArray
*
* @param \Vendor\Ext\Domain\Model\Category $selectedCategory
* @return array $categories
*/
public function findAllAsArray($selectedCategory = NULL){
$localCategories = $this->findAll();
$categories = array();
// Transform categories to array
foreach($localCategories as $localCategory){
$newCategory = array(
'uid' => $localCategory->getUid(),
'title' => $localCategory->getTitle(),
'parent' =>
($localCategory->getParent()?$localCategory->getParent()->getUid():NULL),
'subcategories' => null,
'isSelected' => ($selectedCategory == $localCategory ? true : false)
);
$categories[] = $newCategory;
}
return $categories;
}
/**
* findSubcategoriesRecursiveAsArray
*
* @param \Vendor\Ext\Domain\Model\Category $parentCategory
* @return array $categories
*/
public function findSubcategoriesRecursiveAsArray($parentCategory){
$categories = array();
$localCategories = $this->findAllAsArray();
foreach($localCategories as $category) {
if(($parentCategory && $category['uid'] == $parentCategory->getUid())
|| !$parentCategory){
$this->getSubcategoriesIds($localCategories, $category,
$categories);
}
}
return $categories;
}
/**
* getSubcategoriesIds
*
* @param array $categoriesArray
* @param array $parentCategory
* @param array $subcategoriesArray
* @return void
*/
private function getSubcategoriesIds($categoriesArray,$parentCategory,
&$subcategoriesArray){
$subcategoriesArray[] = $parentCategory['uid'];
foreach($categoriesArray as $category){
if($category['parent'] == $parentCategory['uid']){
$this->getSubcategoriesIds($categoriesArray, $category,
$subcategoriesArray);
}
}
}
/**
* buildSubcategories
*
* @param array $categoriesArray
* @param array $parentCategory
* @return array $categories
*/
private function buildSubcategories($categoriesArray,$parentCategory){
$categories = NULL;
foreach($categoriesArray as $category){
if($category['parent'] == $parentCategory['uid']){
$newCategory = $category;
$newCategory['subcategories'] =
$this->buildSubcategories($categoriesArray, $category);
$categories[] = $newCategory;
}
}
return $categories;
}
### Category - List Template:
<ul>
<f:for each="{categories}" as="category" iteration="categoryIterator">
<f:render partial="Category/PropertiesList"
arguments="{category:category, selectedCategory:selectedCategory}" />
</f:for>
</ul>
### Category - List Partial
<li {f:if(condition: '{category.isSelected}', then: '
class="selected"', else: '')}>
<f:link.action arguments="{category:category.uid}">
{category.title}
</f:link.action>
<f:if condition="{category.subcategories}">
<ul>
<f:for each="{category.subcategories}" as="subcategory"
iteration="categoryIterator">
<f:render partial="Category/PropertiesList"
arguments="{category:subcategory, selectedCategory:selectedCategory}"
/>
</f:for>
</ul>
</f:if>
</li>
Wouldn't it be a good idea to extend the core categorization api to
have subcategories automatically beeing hold in a category's
"subcategories" property? Currently, there is just a "parent" property
available. When having a "subcategories" property in addition, most of
the code above to create a recursive tree array wouldn't be needed any
longer and many tasks using categories would be much easier... I've
already created an issue for this some time ago:
http://forge.typo3.org/issues/53091#change-188285
What do you think?
Kind regards, Jan