How does the blog generate the filter pages?

[PetersOtto]

Hello everyone!

I'm stuck and need your help.
I have set up a website with a blog and a news page. Just as I have described here: #849 (reply in thread)

Unfortunately I can't find a way to generate the »filter pages«. For example www.your-domain/news/tag:yourtag/
Does anyone have any ideas? How are the »filter pages« generated by Yellow?

🙋

[PetersOtto]

My findings so far are that you have to change the blog.php to be able to use filter pages. My solution here #849 (reply in thread) does not work with filtering.

The following way works, but requires more work when the blog extension will be updated

1. download the blog extension https://github.com/annaesvensson/yellow-blog
2. unpack the block extension
3. rename the folder from yellow-blog-main to yellow-news-main
4. change into the folder yellow-news-main
5. open a terminal in this folder (yellow-news-main)
6. rename into the files all blogs to news (find -type f -exec sed -i 's/blog/news/g' {} \;)
7. rename into the files all Blogs to News (find -type f -exec sed -i 's/Blog/News/g' {} \;)
8. rename the parts blog to news in the filename (rename 's/blog/news/' *)
9. check if everything has been renamed correctly
10. compress the folder yellow-news-main to yellow-news-main.zip
11. copy the file yellow-news-main.zip into the extensions folder of your Yellow installation
12. go to the content folder and change the folder name from 2-news to 3-news. Or choose a number that matches better to your website.
13. Open the yellow-language.ini (in my case german) in the extension folder and add the following lines:

NewsDescription: Blog für deine Webseite.
NewsBy: von
NewsTag: Tags:
NewsMore: Lies mehr…

Now the second blog should work.
Be careful not to rename the wrong files! I work with Ubuntu 20.04.

[markseuffert]

Have a look at the method $pages->filter(). This API function is also used by the blog extension to filter pages in file blog.php in function onParsePageLayout(). As you can see in the blog source code, it first checks if there are any page request arguments and then filters pages for the blog start page. You can use the same API functions in your custom layout file.

[PetersOtto]

Perfect! Thanks for the tip! I got it.
I have added the code to the post #849 (reply in thread).

Do you generally see a problem with working with two blogs, as I described above #933 (comment)? Could that be a problem for Yellow? Maybe performance?

[markseuffert]

No, I don't see a problem with either solution. A single layout file is fine. Take the solution which works best for you. 😀

Filtering in the API is fast. Performance testing source code is a great idea and there's something built in to make this super easy. You can activate the debug mode in your system settings with CoreDebugMode: 1. Then you should see something like YellowCore::request status:200 time:19 ms on the screen. Usually Markdown parsing costs the most CPU time, searching through all pages can take noticeable CPU time, anything else increases/decreases the CPU time probably by a few milliseconds.

[PetersOtto]

The fact, that I can also test the performance in debug mode, was not even in my mind. 🙄
Thx 😊