在 TYPO3 中如何将类别作为嵌套数组获取？

Question

我想创建一个自定义元素来生成类别及其子类别的列表。

我的问题是类别和子类别作为一个单级数组出现。

如何生成嵌套数组以便使用 fluid 对其进行循环？

10 = TYPO3\CMS\Frontend\DataProcessing\DatabaseQueryProcessor
10 {
        if.isTrue.field = categories
        table = sys_category
        selectFields = sys_category.*
        pidInList = 55
        recursive = 999
        as = categories
}

Answer 1

由于您也可以嵌套数据处理器，因此您只需确保 select 父级仅用于第一级。然后就可以根据parent的uid在second level上获取他们的children了：

10 = TYPO3\CMS\Frontend\DataProcessing\DatabaseQueryProcessor
10 {
        if.isTrue.field = categories
        table = sys_category
        selectFields = sys_category.*
        pidInList = 55
        recursive = 999
        where = parent = 0
        as = categories
        dataProcessing {
            10 = TYPO3\CMS\Frontend\DataProcessing\DatabaseQueryProcessor
            10 {
                    table = sys_category
                    selectFields = sys_category.*
                    pidInList = 55
                    recursive = 999
                    where.dataWrap = parent = {field:uid}
                    as = subcategories
            }
        }
}

不过，如果能为核心获得特定类别的处理器，那就太好了。参见 https://forge.typo3.org/issues/82010

在 TYPO3 中如何将类别作为嵌套数组获取？

How do you get categories as a nested array in TYPO3?

typo3

typoscript

fluid

typo3-9.x