Wp-calypso: Pages: allow authors to set number of posts for blog page (was in Reading Settings in wp-admin)

[lancewillett]

This is for parity, split out from #3900

As a WordPress.com user, I want to be able to change the "posts per page" number on my “blog posts” page on my /pages list so that I can avoid visiting wp-admin to make this change.

How the current Calypso /pages list looks — no setting here yet:

Previously in wp-admin:

[lancewillett]

Let's get this one in right away to close this UX gap.

[rickybanister]

Any thoughts on the interface?

At the minimum we could change the 'Your latest posts, shown on homepage' text to be an inline form label like this:

It could say Show [10] posts at a time on my homepage

[kathrynwp]

It could say Show [10] posts at a time on my homepage

Since the blog isn't always on the homepage, it should say something more like:

Show [10] posts at a time on my blog

We should also keep in mind that Infinite Scroll loads posts in batches that aren't affected by this setting. This relates to something else I think we're currently missing in Calypso on WP.com, which is the ability to turn default IS into "click-to-scroll" (aka "load more posts) IS, a setting currently at WP Admin > Settings > Writing:

Default IS

Click-to-Scroll IS

[rickybanister]

cc @tyxla do we account for the 'click-to-scroll' alert if the user has footer widgets in our recent changes to the calypso infinite scroll settings (as per @kathrynwp's last comment?)

[lancewillett]

As a related note: #13568 — this relates to implementing CPT "posts per page" settings because it'll be in the same place, and use the same UI for toggle and page number.

[tyxla]

@rickybanister good call, we're not taking that into consideration right now. I've opened #13637 to track that one separately, it could use a couple of design 👀 before we develop it.

[jonathansadowski]

With #13718 we've added posts per page under general settings. This included a change in r155891-wpcom to allow the setting to be set via the API, which was also submitted as a Jetpack PR: https://github.com/Automattic/jetpack/pull/7154

[tyxla]

Nice work @jonathansadowski! Guess we can close this one @lancewillett? Or do you think this setting should be implemented elsewhere, too?

[lancewillett]

Fine to close. CC @rickybanister who is going to look at a better location for it as General isn't ideal. Writing might be OK, as the other CPT settings and page counts will be there.

[designsimply]

Following up to say the "Posts Per Page" setting location was tracked in #13868 and closed in #13916.

[tyxla]

Thanks for keeping stuff organized @designsimply 🙇