Getting Started with Paligo

Filtering Content

The core idea of topic-based authoring is to author content in small pieces of reusable information - topics. And the ideal is to have chunked your content into topics so that it is as reusable as possible. Sometimes, however, you may find that a topic could be highly reusable if it weren't for a small paragraph, list item or image. If you could only vary that piece of content within the topic it would make it so much more flexible.

This is what you can accomplish using filtering, sometimes also called "profiling" or "conditional content".

Imagine you have a list of content, where just one list item needs to vary depending on the product you publish for:

To do this, filter the content as follows.

  1. Select the first item you want to filter by placing the cursor inside the element, in this case a listitem.

    Select the right element

    Selecting e.g a paragraph is easy, and you just need to place the cursor inside the text.

    For some elements, however, you have to take more care to make sure the correct element is selected. To make sure you select the whole list item above for instance, and not just the text paragraph inside it, use the arrow keys until you see in the Element menu that it is the listitem element that is selected.

    Similarly, filtering on variables requires an extra step: you cannot apply a filter directly on the variable. Instead, you need to add an extra phrase element, and insert the variable there. Now you can apply a filter on the wrapper phrase element.

  2. Open Element attributes in the Side Tool bar to the right and select the attribute xinfo:product.

    Several available filter attributes

    There are some default filter attributes available, such as:

    • condition (a general purpose filter attribute that you can use for any condition you choose.)

    • audience

    • vendor

    • os

    Additional custom filter attributes are possible to add as well, and some commonly used are already available out of the box, for example:

    • xinfo:product - for profiling based on product names/models and the like

    • xinfo:country - for profiling based on countries the publication is meant for

    • xinfo:market - similar to country, but may offer a less geographically rigid categorization, e.g Asia, EU, US/North America, etc.

    • xinfo:version - For versioning information. Can be used in combination with the version management features of Paligo, but does not have to be. The usage is up to you.

    Note that not all attributes that start with xinfo are filtering attributes, it just means they are custom attributes that have been added and can be extended with others.

  3. The dialog Profiling attributes pops up, showing you the available values. You can also add new values here. Select the appropriate value to filter, in this example the listitem, and click Apply.

    A filter icon will show up next to the element. The Element attributes panel to the right will show the value if you have the cursor in the element.

  4. Repeat for any other element you want to profile, perhaps with a different value.

  5. Finally, once you have filtered the topics that need filters, once you go to publish your Publication, Paligo will show you the filters available. Just select the value you want to profile your Publication with in the publish dialog.

When you use filters on elements like this, only the content matching the value you select in the publishing dialog will be included in the published output. Of course any content that has no filter attributes set at all will also be included.


Note that you can use filter attributes on almost any element, including the top ("root") element of a topic, called section. If you put a filter on the section element at the top, the entire topic will be excluded from the publication. This can be useful if you want to use the same publication structure for many different products, where only a topic or two should be excluded from some products. In some cases that may be more manageable than creating a separate publication for each product. Use your judgment to choose the most manageable solution.

See also