From Joomla! Documentation
Categories are are used to organize Articles, Contacts and other components for ease of management and display. They can be organised into tree-like structures like file systems. For example, category Pets may be a parent to category Dogs, category Cats and Category Goldfish. Categories can be nested to any level. All Articles must be assigned either to a parent Category or a child Category or to the special Category called 'Uncategorized'.
The Articles Categories list shows existing Categories in a table layout. Click a Category name to edit an existing category or click the 'New' Toolbar button to create a new category.
How to Access
- Select Content → Categories from the Administrator menu.
In the table containing Categories, these are the different columns.
- Checkbox: Check this box to select one or more items. To select all items, check the box in the column heading. After one or more boxes are checked, click a toolbar button to take an action on the selected item or items. Many toolbar actions, such as Publish and Unpublish, can work with multiple items. Others, such as Edit, only work on one item at a time. If multiple items are checked and you press Edit, the first item will be opened for editing.
- Ordering. You can change the order of an item within a list as follows:
- If the list Filter Options include a Position filter select the desired Position. This will limit the list to items that are assigned to that Position.
- Select the Ordering icon in the Table heading to make it the active ordering item. The ordering icons in each row will change from light grey to dark grey and the pointer will change to a drag arrow on hover.
- Select one of the Ordering icons and drag it up or down to change the position of that row in the list. The items will display in the new order within the Position.
- Status. Status of Category, Published or Unpublished are shown with icons as follows:
- Title. The name of the item. For a Menu Item, the Title will display in the Menu. For an Article or Category, the Title may optionally be displayed on the web page. This entry is required. You can open the item for editing by clicking on the Title.
- Icons. Counts of number of Published, Unpublished, Archived and Trashed Articles in each Category.
- Access. The viewing Access Level for this item.
- Association. Other languages with which this Category is Associated.
- Language. Item language.
- ID. This is a unique identification number for this item assigned automatically by Joomla!. It is used to identify the item internally, and you cannot change this number. When creating a new item, this field displays 0 until you save the new entry, at which point a new ID is assigned to it.
Search bar. This is a common feature of most Lists. The layout is as shown below.
- Search by Text. Enter part of the search term and click the Search icon. The search may be of one or more fields. Hover to see a Tooltip indicating which fields will be searched. In some cases a different format is required. For Example, to Search by ID enter "id:xx", where "xx" is the item ID number (for example, "id:9").
- Filter Options. Click to display or hide the additional filters.
- Clear. Click to clear the Filter field and restore the list to its unfiltered state.
- Ordering. Shows the current table ordering field. Select from the drop down list to change the order or click a column heading. Ordering may be in ascending or descending order. The column heading toggles between ascending and descending order.
- Number to Display. Shows the number of items in a list. The default for a site is 20 but this may be changed in the global configuration. Select from the drop-down list to change the number displayed. If you select too many complex items they will be slow to deliver and display.
Near the top of the page you will see the filter bar shown in the Screenshot above. The functions are:
Filter by Published Status. Lets you show only items with the selected published status.
- - Select Status -: Shows items that are Published and Unpublished. Does not show items that are Trashed or Archived.
- Trashed: Shows only items that are Trashed. Important Note: To permanently delete items:
- Change the status of the items to Trashed.
- Change the Status filter to Trashed. At this point the trashed items will show and an icon called "Empty trash" will show in the toolbar.
- Select the desired trashed items and click on "Empty Trash" in the toolbar. The items will be permanently deleted.
- Unpublished: Shows only items that are Unpublished.
- Published: Shows only items that are Published.
- Archived: Shows only items that are Archived.
- All: Shows all items regardless of published status.
Filter by Viewing Access Level. Lets you show only items that have a specified viewing access level. The list box will show the access levels defined for your site. Options:
- - Select Access - Show items with any viewing access level.
- <access level group> Show items only with this viewing access level.
Filter by Language. Lets you show only items that have a specific language assigned. The list box will show the languages defined for your site, similar to the examples below.
- - Select Language -
- All Show items for any language.
- <your language>: Show items only for this language.
Filter by Tags. Lets you show only items that have a specified tag. The list box will show the tags created for your site, similar to the example below.
- - Select Tags -: Show items with any (or no) tag(s).
- <tag>: Show items only with this tag.
Filter by Max Levels (Category Level). Lets you show only items whose category is at or above the specified level in the category hierarchy.
- - Select Max Levels -: Show all items regardless of level of their assigned category.
- 1: Only show items whose category is at the top level in the category hierarchy (in other words, with categories whose parent category is "- No Parent -".)
- 2-10: Only show items whose category is in the top 2-10 levels in the category hierarchy.
Page Controls: When the number of items is more than one page, you will see a page control bar as shown below. The current page number being viewed is shaded.
- Start: Click to go to the first page.
- Prev: Click to go to the previous page.
- Page numbers: Click to go to the desired page.
- Next: Click to go to the next page.
- End: Click to go to the last page.
The Batch Process allows a change in settings for a group of selected items marked with a check-mark in the corresponding check-mark boxes. To use: click on the link found below the table of items being viewed to activate the drop down field area. Using the 'Batch' Toolbar button will open a pop up window as shown below.
You can change one value or all four values at one time.
- Note - if you copy items to a new category, changes you have selected from access level and language will be applied to the copies, not the original.
How to Batch Process a group of items:
- Select one or more items on the list by checking the desired category check boxes.
- Click the 'Batch' Toolbar button.
- Set one or more of the following values:
- To change the Access Levels, select the desired new access level from the Set Access Level list box.
- To change the Language, select the desired language from the Set Language list box.
- To change the Category, select a category. To leave the category unchanged, use the default value of "Select".
- To copy the items to a different category, select the desired category from the category list box and check the Copy option. In this case, the original items are unchanged and the copies are assigned to the new category and, if selected, the new access level and language.
- To move the items to a different category, select the desired category from the category list box and check the Move option. In this case, the original items will be moved to a new category and, if selected, be assigned the new access level and language.
- When all of the settings are entered, click on Process to perform the changes. A message "Batch process completed successfully." will show.
Note that nothing will happen if you (a) don't have any items selected or (b) have not selected an access level, language, or category.
If you wish to clear your entered selections, click on the Cancel button. This will return all of the Batch controls to their default values. Note that this does not uncheck the check boxes for the items.
At the top of the page you will see the toolbar shown in the Screenshot above. The functions are:
- New. Opens the editing screen to create a new category.
- Actions: Reveals a list of actions for selected Items. Check one or more Item checkboxes to activate the list.
- Publish. Makes the selected category available to visitors to your website.
- Unpublish. Makes the selected category unavailable to visitors to your website.
- Archive. Changes the status of the selected category to indicate that they are archived. Archived category can be moved back to the published or unpublished state by selecting "Archived" in the Select Status filter and changing the status of the category to Published or Unpublished as preferred.
- Check-In. Checks-in the selected category. Works with one or multiple category selected.
- Trash. Changes the status of the selected category to indicate that they are trashed. Trashed category can still be recovered by selecting "Trashed" in the Select Status filter and changing the status of the category to Published or Unpublished as preferred. To permanently delete trashed category, select "Trashed" in the Select Status filter, select the category to be permanently deleted, then click the Empty Trash toolbar icon.
- Batch. Batch processes the selected category. Works with one or multiple items selected.
- Rebuild. Reconstructs and refreshes the category table. Normally, you do not need to rebuild this table. This function is provided in case the data in the table becomes corrupted.
- Options. Opens the Options window where settings such as default parameters can be edited. See Article Manager Options for more information.
- Help. Opens this help screen.
- Click on the Title of a Category to edit it.
- Click on the green check mark or the red X in the Published column to toggle between Published and Unpublished.
- Click on the Column Headers to sort the Categories by that column. Click a second time to sort descending (Z to A).
- To add or edit Categories: Category Manager - New/Edit