[Resolved] Display Rules for Child Pages

[joe@empathik.com]

Sites I work on are very focused on page hierarchies. For example, these two sets of pages, each which would share certain layout elements:

Project A
/project-a/
/project-a/research
/project-a/research/something
/project-a/research/else
/project-a/capabilities
/project-a/contact

Project B
/project-b/
/project-b/research
/project-b/research/something
/project-b/research/else
/project-b/capabilities
/project-b/contact

Is there an option (existing, planned) in the Display Rules where, for example, you could set a header or a layout to appear on a parent page and all children (and even grandchildren).

Seems like this still needs to be done via custom function/PHP at this time.

Thanks in advance for your insight.

[Tom]

Hi there,

I have a feeling this would be incredibly complex inside the Display Rules. There’s no plans for it right now, but I definitely wouldn’t rule it out for the future.

For now, I would just use the filters for each kind of Element to display them based on your specific conditions:

generate_header_element_display
generate_hook_element_display
generate_layout_element_display

Example usage: https://docs.generatepress.com/article/generate_header_element_display/

[joe@empathik.com]

Thanks, Tom, I certainly do appreciate your time and this project overall.

Just to make sure I’ve stated my intent clearly, this is similar to the Elementor conditions.

https://docs.elementor.com/article/311-conditions

Display Conditions

Include/Exclude: Singular > Page > Child of.

(There are a number of reasons why our NASA Glenn website customers don’t always need to go down the full-hog Elementor route.)

Thanks again for your time and consideration.

Adding for reference, the is_tree function I wish WordPress would add to core!
https://wordpress.org/ideas/topic/add-is_tree-function-to-core-of-wordpress

[Tom]

Thanks for that! I’ll take a look at how they achieved it 🙂

[David R]

This is exactly what I need, too. Case use: staff bio pages where the staff Position is a custom field with an Element to display the custom field under the title. My current workaround is to Display > All Pages with PHP to filter for the ancestor page id. Main Staff Page (ID: 44) > Individual Staff Bio Pages:

$post_id = get_the_ID();
$ancestors = get_ancestors( $post_id, 'page');
if($ancestors[0]==44) {...};

With the Child Of display rule, this could then be done in a Page Header with the {{custom_field.name}} tag without the filter.

Also, a similar function in WP Show Posts where you can create a list of all children (I had previously mentioned this too you in email on 3/19/2018). Currently I just manually enter the individual Page IDs, but that’s tedious for maintenance as pages are added/removed. Same case use as above, where the same custom field is inserted into the list with a WP Show Post Code Snippet.

[Staff (ID: 44) lists the staff name and Position, then click-thru to the individual bio page for details.]

There is the get_children() function, but I can see how that can get cumbersome with recursion. With an Elements Display > Child Of, I can see a lot of iterations to check every page and determine if a display rule applies: get_ancestors(get_the_ID()) and determine if the given Parent ID on each Element with a Child Of rule exists for the current Page ID.

[Dario]

I’m new to GeneratePress, and loving it so far!

Is there any new development on having an “element” for displaying a list of child pages? Preferably with the featured image?

Thanks much.

[David R]

WP Show Posts Pro doesn’t do child lists yet, but the workaround is to use a plugin like Add Category to Pages, then creating a list with that Page Category. This works just as well as a child page list would for me; I just have to be sure to assign the Pages to the Category.

[Tom]

No news on the child pages, yet, but it’s still something we’re planning on doing.

Adding categories to pages is super useful when it comes to the Display Rules 🙂

[Dario]

Thanks for the replies and ideas. I ended up creating a custom post type and archive page instead to display all the items.

[Tom]

Awesome 🙂

[Fabien]

Hi @Tom, any updates on this ?

Thanks

[David]

Not yet. We’re currently reviewing the Display Rule mechanisms as a whole part of which would consider child pages and other methods of selection.

[Author]

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