Move Topmenu CategoryData creation to a public method to enable plugin ... #1083
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Magento provides a couple of nice observers that "Allow extensions to modify select (e.g. add custom category attributes to select)" namely catalog_category_flat_loadnodes_before and page_block_html_topmenu_gethtml_before. However once added to the select there is (I belive) no nice way to add the data to the topmenu.
Currently I need to disable catalog_add_topmenu_items and add my own observer to replace it, not very nice as only I can do this meaning other extensions cannot also add data. I propose moving the generation of $categoryData to a seperate public function so that I can add data with Plugins.