Working with tags

[Tom.]

Hello, 

I'm created a site where it will have related case studies depending on the tags. I've got it working and it works perfectly, but I was just wondering if there was a more elegant approach using more of ProcessWires powerful API. 

So I have a page called Tags that are hidden, with the children being the tags themselves. On each Case Study I have a Tag field that is selectable from the Tags page. 

Then in my code I have:

foreach($page->tags as $tag) {
     $a[] = $tag->title; 
}
$a = implode("|", $q);
$results = $pages->find("tags~=$a")->shuffle();
foreach($results as $result) {
     if($page->id != $result->id) {
         echo "<a href='$result->url'><h1>$result->title</h1></a>";
     }
}

Let me know if there is a more elegant way of doing this. I'm obsessed with clean code

Thanks,

Tom

[MuchDev]

Looks fine to me. If you are obsessed with clean code you should read up on the api, there is tons of stuff that will save you some lines. For instance your couple lines could be blitzed with one little line of code. 

http://cheatsheet.processwire.com/pagearray-wirearray/getting-items/a-implode/

//no need to loop the results to an array if that is what you want

$query = $page->tags->implode("|","id");
$results = $pages->find("tags=$query")->shuffle(); 

[diogo]

Pw converts pageArrays to a string in that formal automatically when inside selectors, so this should do the same:

$results = $pages->find("tags={$page->tags}")->shuffle();

[MuchDev]

Didn't know that. Even cleaner.  

[diogo]

Also, you can remove the current page from the array to avoid the IF check inside the loop

$results = $pages->find("tags={$page->tags}")->remove($page)->shuffle();

Or, do the same as above with one less method:

$results = $pages->find("id!={$page},tags={$page->tags}")->shuffle();

Edited September 20, 2015 by diogo
added second method

[Tom.]

Diogo, you are amazing! Thank you very much. ProcessWire is so beautiful. Remove doesn't seem to be on the Cheatsheet. There has been quite a few times people have suggested using things, that aren't on the Cheatsheet. I would love to see the Cheatsheet updated eventually. 

[diogo]

You're welcome

Remove is in the cheatsheet, you have to toggle the advanced mode (button on top)