Adding function onscroll to post

feodosij

I'm starting research flarum and wrote only one custom extension in extend.php

Right now needed to add another thing, that I propose to add in latest flarum build.
Its next step (Of SEO feature) described in this post https://discuss.flarum.org/d/5967-search-on-topic/12

needed to make function onscroll posts, when changed its number. 10,11,12 and any other.
with capturing post content and put in meta, description tag.

The function I'm ready to write by myself. Needed two things:

Where to put this code (or if it can be done at extension, how it can be runned) - that executes onscrolling to another posts
How to capture post content

You may see that right now Flarum shows its dummy text in <meta name="description" content"" />

Needed to replace with post content

clarkwinkelmann

feodosij are you trying to modify the "noscript" HTML, or the javascript single page application?

"scrolling" is only a concept that exists in the single page application, but changing the meta tags client-side with javascript likely won't achieve what you need.

Do you mean you want to change the meta tags in the HTML of the initial page load depending on the post number at the end of the requested URL?

Both options should be possible. For server-side you would probably need a middleware that parses the URL and retrieves the post from the database, then store the values you need in a global variable or the container, and then use the document content extender to modify the <head> items.

feodosij

I'm not started to write this feature, because my extend.php has another module and I do not have experience how to write second module inside it or publish it as another module.

clarkwinkelmann Do you mean you want to change the meta tags in the HTML of the initial page load depending on the post number at the end of the requested URL?

Yes, exact, at least on page load. I see, that Google renders meta tag, that was modified JS on clients side. And Google see it. It can be realized on clients side (secondary priority). Onscroll maybe not important, you're right.

Servers side is better option (first priority). Can you suggest open source module, that has functions of reading DB with exact post and write head module or links on documentation.

Thank you

clarkwinkelmann

The closest example I can think of is the SEO extension which does something extremely similar, just not with posts specifically

Most of the interesting logic is in this file https://github.com/v17development/flarum-seo/blob/master/src/Listeners/PageListener.php

Maybe this feature could be added to the SEO extension seeing there's so much overlap between the features.

A middleware actually isn't necessary, because the ServerRequestInterface object can be accessed from the content extender callback like the SEO extension uses.

The extend.php file returns an array. To add/merge more extenders, just add new elements to the array. The order of the extenders in the array generally isn't important.