On the UBC Wiki, you can categorize pages and files by appending one or more Category tags to the content text. Adding these tags creates links at the bottom of the page that take you to the list of all pages in that category, which makes it easy to browse related articles.

Editing Categories on Visual Editor

To edit categories, on the "Page options" menu, press the "Categories" item.

Pressing on "Categories" opens a dialog that lists existing categories and allows you to add new ones, and to delete existing categories.

To remove an existing category, press on it and press on the "Remove" icon (trash can) in the dialog that opens. Pressing on a category also allows you to specify a sorting key for that specific category. Such a sorting key overrides the default sorting key.

Press "Apply changes" when you're done editing categories to return to the page editor.

Editing Categories with the wiki markup

Add a page to a category

To add a page or uploaded file to a category, simply edit the page and add the following text (where NAME is the name of the category you want to add it to).

[[Category:NAME]]

Any number of Category tags may be added to the page and the page will be listed in all of them. Category tags can be added wherever you like in the editing text, but they are usually added at the very bottom for the convenience of other editors.

Spaces and line breaks before categories are ignored, thus

* A list item
[[Category:Some category]] Some text

will be rendered the same as

* A list item Some text

You will need to manually add a <br /> tag or a line break after the category.

Sort key

A sort key specifies where the page will appear in the category list, and under which letter heading. (By default, the page is sorted under the first letter of its full name including its namespace.) You can add a sort key to a page by adding it inside the Category tag. For example, the tag below will add the page under the heading "S".

[[Category:NAME|SORT]]

Sort keys are case-sensitive, and a space is also valid. The order of the sections within a category follows the Unicode sort order (see below). The sort key does not change the page title displayed in the category.

!"#$%&'()*+,-./0123456789:;<=>?
@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_
'abcdefghijklmnopqrstuvwxyz{|}~?

Create a category

A category can be created the same way as other wiki pages (See Help:Starting a new page); just add "Category:" before the page title. (Category lists exist even if their description page is not created, but these categories are isolated from others and serve little purpose for organization or navigation.)

It is not possible to rename (move) a category, unlike other wiki pages. It is necessary to create a new category and change the Category tag on every page. The new category will not have the older category's page history, which is undesirable if there are many revisions.

To avoid extra work, try searching within your wiki before creating a new category. The list of all categories can be found in "Special pages" in the "tools" box of the sidebar.

Create a Subcategory

Once you have created the subcategory, edit its category page and add one or more Categories at the bottom of the page. This will make the category a subcategory of all the categories that you have added. It is a good idea to organize all your categories into a hierarchy with a single top level category.

Linking to a category

To create a link to a category, use a leading colon before the category name. (Without this colon, it will add the current page to the category.) To change the link text, write the text inside the link tag after a pipe.

[[:Category:NAME]]
[[:Category:NAME|TEXT]]

Creating Category List on a Wiki Page

You can use the CategoryTree tag, <categorytree> to show a category structure in-line on a wiki page.

For example, to generate a dynamic list of the subcategories of the Learning Technology category, you would use the following code:

<CategoryTree>Learning Technologies</CategoryTree>

.

This generates the following list:

Learning Technologies

Blogs

Clickers

EPortfolios

IPeer

Kaltura

LMS

Wiki

Please see Help:CategoryTree for more information.

Help:Categories