categories

问题 I am trying to display different custom fields for different categories in WooCommerce. I have used the following conditional statement in content-single-product.php template file: if(is_product_category('categoryname')) { // display my customized field } else { do_action( 'woocommerce_after_single_product_summary' ); } But this isn't working for me. Is there any better way to rectify this issue? Thanks. 回答1: The condition is_product_category() will not work for you in single product

问题 I'm wishing for a simple index more or less with my PHP note taking software, each note has a "language" field for the programming language its written in. When I iterate through each entry in a while loop, I'm not sure how i'd list categories of them such as: PHP: Note 1 Note 5 SQL: Note 2 Note 3 Do I need to place all entries in a temporary array with if s, like this? if($field['language'] == "PHP") $PHPsection[] = $field; Although that doesn't look the best as I'd need to hardcode each

问题 Note this is not a duplicate of this similar but different question! My question is not how to intercept Category create / rename / delete events, but how to intercept when a user assigns a category to an item (contact, meeting etc). I am just starting to explore the Outlook object model, and I'm struggling to 'get' how it works. Any assistance in the right direction would be fantastic! I realise I'm not providing much detail and this seems like a 'please do it for me' type question, but I

问题 I have a few products that are uncategorized, because they do not belong to any specific product category. I'd like to keep the products in the uncategorized group available on my website (when people search for it, when I show it on the frontpage etc), but I want to hide the actual uncategorized tab from the category dropdown etc, so people do not see it. I tried this code, but without luck: // Do not include this if already open! /** * Code goes in theme functions.php. */ add_filter(

问题 i am new to magento. i used below code in allproduct.phtml file for get all category id's. function get_categories(){ $category = Mage::getModel('catalog/category'); $tree = $category->getTreeModel(); $tree->load(); $ids = $tree->getCollection()->getAllIds(); $arr = array(); if ($ids){ foreach ($ids as $id){ $cat = Mage::getModel('catalog/category'); $cat->load($id); $arr[$id] = $cat->getName(); } } return $arr; } now i got category Id'd like below in one array, Array ( [Root Catalog] => 1

问题 This question already has an answer here : How to create query from parent child hierarchy table (1 answer) Closed 2 years ago . I have a table which represents a category hierarchy and the element at top of the hierarchy has the parent id as 0. There are over 54K unique IDs in the CatID Column. Each ID can be a parent of another. The categories go 8 levels deep. The table is as the exaple below: CatID ParentID CatName 1 0 Home . . . . . . 20 1 Vehicles . . . 35 20 SUV 36 20 Motorbikes . . .

问题 I have 3 tables: category doesnt matter item2cat: itemID|catID item: id|name|desc I want to list the items that are in the given category, but I don't know how to do it in a simple way. (With PHP and MySQL) I need this table-structure because I want multiple categories to one item. 回答1: You probably want to join the item2cat table on your item table: SELECT item.id , item.name , item.desc FROM item INNER JOIN item2cat ON item.id = item2cat.itemID WHERE item2cat.catID = [category_id] or for

问题 I believe it is a common practice to put custom code for a NSManagedObject in a category of the subclass since Xcode will overrite your generated subclass when the model is edited. I just wanted to confirm this. I have seen examples where people say it is bad to combine categories with methods that are already implemented in the class hierarchy. I'm not sure if this is just for the cases when the class that has the actual category has the method already implemented or in all cases. 回答1: The

问题 Apple has this to say: Categories of the Root Class A category can add methods to any class, including the root class. Methods added to NSObject become available to all classes that are linked to your code. Adding methods to the root class with a category can be useful at times, but it can also be quite dangerous. Although it may seem that the modifications the category makes are well understood and of limited impact, inheritance gives them a wide scope. You may be making unintended changes

问题 I am creating a blog through Rails. I am relating the posts and categories models through a many-to-many relationship. How do I incorporate subcategories in this model? 回答1: Hierarchy The best way is to use one of the hierarchy gems, typically Ancestry or Closure_Tree to create a "tree" type structure for your categories . You'll then be able to associate blogs with each category, creating the hierarchy functionality you need. We've achieved this before - using the Ancestry gem: Categories As