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More fun with sub sub pages (35 posts)

alexleonard
Member
Posted 1 year ago #
I've been reading around a lot of the discussion following sub pages and sub-sub pages, but I haven't quite found the answer I'm looking for (most of the posts seem to concern wp_list_pages showing a proper nav list when on page, child, or sub-child...)

I think I know roughly how you would do this in plain English, but my PHP isn't that strong.

Problem

I need to define a variable for templating reasons that if you are on a page, any of its sub-pages, or any of those sub-page's sub-pages.. and so on.

Following the codec example I have thus far got:
```
<?php

if 	(is_page('20') || $post->post_parent=="20") {
	$sidebar_call = 1;
} elseif (is_page('34') || $post->post_parent=="34") {
	$sidebar_call = 2;
} elseif (is_page('11') || $post->post_parent=="11") {
	$sidebar_call = 3;
} elseif (is_page('12') || $post->post_parent=="12") {
	$sidebar_call = 4;
} else {
	$sidebar_call = "default";
}	

?>
```
As I expected, this works fine on any of the above pages or their sub-pages, but when you get to a sub-sub-page the variable is assigned the default value.

I can imagine that I need to create an array (as can now be done in 2.5), but am not sure how to go about it.

I know there is a function for get_children, but I haven't found any documentation on how that works (and whether it gets children of the children!).

My English version of the code would be:
```
<?php

if 	(is_page('20') || (is_page(get an array of all children and sub children of page 20...) {
	$sidebar_call = 1;
} elseif (is_page('34') || (is_page(get an array of all children and sub children of page 34...) {
	$sidebar_call = 2;
} etc...

?>
```
However I'm not sure exactly how to make this happen....

Any ideas?
Ivovic
Member
Posted 1 year ago #
you're sort of doing this the wrong way around I think.

what you want to do is to keep checking the parent page until you reach the top level, and do something if you find the correct top-level ID right?
```
$parentid = $post->post_parent;
while ($parentid) {
  $page = get_page($parentid);
  $parentid = $page->post_parent;
  if ($parentid=="2") echo 'this is a child of the About page';
  if ($parentid=="483") echo 'this is a child of a test page';
}
```
the while loop ends when there are no more parents. if your ID is found along the way, then the output is echoed.
alexleonard
Member
Posted 1 year ago #
Hey Ivovic,

Thanks for your speedy response. I think I can understand what you're doing here.

Basically, you first get the parent id of the post and assign it to $parentid (not sure what happens if the post doesn't have a parent?)

and then I start to find it hard to explain in plain english :) basically you're working out that if that parent has another parent it will assign that to parentid and loop back to see if it finds another one, and then once that loop is completed you run some if statements and whichever one it matches it executes..

(I'm learning PHP slowly, so this is the brain process I have to go through ;)

Anyway, I took what you had in there and I didn't have any joy with it (none of my if statements are evaluating as TRUE evidently..). I just tried to output a basic statement
```
$parentid = $post->post_parent;
while ($parentid) {
 $page = get_page($parentid);
 $parentid = $page->post_parent;
 if ($parentid=="20") echo "CLC Page/sub page";
 if ($parentid=="34") echo "Community Link Page/sub page";
 if ($parentid=="11") echo "Recycle Scotland Page/sub page";
 if ($parentid=="12") echo "Stepping Stones Page/sub page";
 if ($parentid=="2") echo "Home Page or sub page";
}
```
I tried running this through some else/if type of layout as well (just to see if I could return a default result) and nothing was going on there either.

However I'm probably missing something ;)
alexleonard
Member
Posted 1 year ago #

Oh, unfortunately I don't have a URL to provide as an example as this is being developed offline :(

Still, it's a project for the Edinburgh University Settlement, which is charity organisation in Scotland which aims to provide "Effective and lasting social & community development", just so the Community Link etc makes sense.
Ivovic
Member
Posted 1 year ago #
(not sure what happens if the post doesn't have a parent?)

if it doesn't, then the variable is empty, and the while loop is essentially skipped.

I posted that on the fly without thinking too much about it, so let me make a slight correction, which I'll then explain in plain english.
```
$parentid = $post->post_parent;
while ($parentid) {
  if ($parentid==2) echo 'this is a child of the About page';
  if ($parentid==483) echo 'this is a child of a test page';
  $page = get_page($parentid);
  $parentid = $page->post_parent;
}
```
I just swapped the order, because what I originally posted wouldn't have caught the immediate parent... only the grandparent (oops).

Here it is in plain english:
```
lets see if the page we're on has a parent.
if it does, and while we have parents to keep checking...
   Have we found an ID we like? If so, do this. If not, do nothing.
   ...
   lets pull the parent page so we can see what its parent is
   lets grab the ID of that grandparent now, so we can check it
keep looping
```
The loop stops when the last line inside the loop, sets $parentid to an empty value. No parents = no loop.

the reason you're probably not getting any joy is because I screwed up the order of if-statements, and you didn't have enough sub-subs to test with.

also, this needs to be in page.php, or a suitable page template, but I'm asuming you've got that covered already. If by chance you're using this in your functions.php, you'll have to modify it to pull the initial value (but you're not, right?)

my original code also only checks parents / grandparents / great grandparent, not the page you're on now... to do that, you'd need something like this:
```
if (is_page(2)) echo 'this is About';
elseif (is_page(483)) echo 'this is Test';
else {
  $parentid = $post->post_parent;
  while ($parentid) {
    if ($parentid==2) echo 'this is a child of the About page';
    if ($parentid==483) echo 'this is a child of a test page';
    $page = get_page($parentid);
    $parentid = $page->post_parent;
  }
}
```
this will continue to do absolutely nothing unless one of the IDs are matched (that is, it will just fail silently without a default result).

Please keep in mind, I haven't tested any of this since I have my hands a little full right now, but I *think* it'll work... barring any typos or brain farts.
alexleonard
Member
Posted 1 year ago #

Ivovic,

You're a legend. I'm going to go through that piece by piece and dissect it all.

I'm actually going to look to turn this into a function returning a variable so that I can use this work to assign not just different sidebars to different "Projects" in the website, but also so that I can assign an extra class to the body of the page dependent on which section of the site you're in. This will allow me to vary the colours etc with some simple cascades of style!

I'll report back when I have things worked out and hopefully the end function can be of use to someone else some day.

(I've just started learning PHP properly - I've just covered the basics of functions so am eager to test it out, although I'll get it working in our initial test scenario before I go messing with functions...!)

Thanks again, really appreciate the excellent explanations when you're so busy.
Otto42
Moderator
Posted 1 year ago #
There's actually a function to do this sort of thing, but it's broken.
See here: http://trac.wordpress.org/ticket/7029

If it worked, it would look sorta like this:
```
$ancestors = get_post_ancestors($post);
if (in_array(2,$ancestors)) echo "2 is an ancestor";
if (in_array(array(2,483),$ancestors)) echo "2 or 483 is an ancestor";
```
Ivovic
Member
Posted 1 year ago #

Happy to help, Alex... I'll be glad to hear back when you've had a chance to make this work.

given that you'll be reusing this, making it into a function is definitely a good idea, just be sure to pass the current page ID to the function you make, as the $post variable isn't available to functions in functions.php by default.

The rest of the code works anywhere, you just need to give the function a starting point.

Good luck with it.

edit: Otto, I'd looked into that (when making my breadcrumbs bit)... but as you say... it no worky.
alexleonard
Member
Posted 1 year ago #
Hey guys,

I got it working (not in a function yet, about to do that).

Ivovic, I found that the last example you gave worked on a sub sub page, but not on a master page - so I figured that maybe if the page doesn't have a page_parent then it doesn't return a result (I couldn't find out whether it returns NULL if it is a parent).

So I ran a conditional first and if the page isn't a sub page than parentid is just assigned the ID and it looks like it's working.
```
if (is_page() && $post->post_parent ) {
  $parentid = $post->post_parent;
} else {
  $parentid = $post->ID;
}

while ($parentid) {
  if ($parentid==20) echo 'Page 20, or a child/subchild of 20
';
  if ($parentid==34) echo 'Page 34, or a child/subchild of 34
';
  if ($parentid==11) echo 'Page 11, or a child/subchild of 11
';
  $page = get_post($parentid);
  $parentid = $page->post_parent;
}
```
I'm going to look at converting this into a function now (and thanks for the reminder of passing data (I better remember to return it too! Ah the joy of finally learning about this stuff - a lot less blind stabbing in the dark!).

Thanks again.

Alex

Edit: ps. it of course goes without saying that if I'm doing something a weird way, please feel free to correct me :)
Ivovic
Member
Posted 1 year ago #
yeah, I thought about setting $parentid to the current page ID, but since the loop is structured not to break on its own, that's a little inefficient because it tries to pull the parent page of the top-level page even if it finds a match.

there's going to be a cleaner way to to this, but as you've noticed from my mistakes and distractions, my head's not really in it very solidly right now.

either way, it's probably not a bad idea to open up some curlies after those if-statements and insert a break.
```
if ($parentid==2) {
  echo 'do stuff';
  break;
}
```
that'll stop the cycle once a match is found... but I hate using breaks, 'cos there's usually a far nicer way to handle the trickledown.

edit: I want to note though... there's nothing wrong with getting something in there that works for now, then refining this while taking a break from your layout/graphics work... no doubt your requirements will evolve somewhat as your design takes shape anyway.
alexleonard
Member
Posted 1 year ago #
More fun and games :)

I will actually probably look at just getting this working right now (so I can send the project heads an example of the site) but I'll definitely be looking to refine it. First up so that something the eventual admins do won't break it, but also, if I can work out a useful function that could prove it's worth again and again, then I'd be very happy.

So I found that my above example was working very well, until I went to my overall news page. As I'm using a static front page, I've assigned my posts page to "News"(ID=3).

However my tests showed that the code was returning the value of the most recent post, rather than that overall page id.

So I've (probably very unsightly) got this working using:
```
if (is_page() && $post->post_parent ) {
	$parentid = $post->post_parent;
} else {
	$parentid = $post->ID;
}

while ($parentid) {
 echo '<li class="widget">Parentid = '.$parentid.'</li>';
 if ($parentid==20) dynamic_sidebar('CLC');
 if ($parentid==34) dynamic_sidebar('Community Link');
 if ($parentid==11) dynamic_sidebar('Recycle Scotland');
 if ($parentid==12) dynamic_sidebar('Stepping Stones');
 $page = get_post($parentid);
 $parentid = $page->post_parent;
 if (!$parentid==(20 || 34 || 11 || 12)) dynamic_sidebar('Default');
}
```
I'm going to grab some dinner and come back to this.

Thanks again!
Ivovic
Member
Posted 1 year ago #

I'm pretty sure that'll call the sidebar numerous times on sub-sub pages which don't match those IDs...

bad mojo.

I think the best way to do what you want is to set a flag.

[edited in lieu of the following]

Ivovic
Member
Posted 1 year ago #

neatening:

$sidebar = 'Default';
while ($parentid) {
 echo '<li class="widget">Parentid = '.$parentid.'</li>';
 if ($parentid==20) $sidebar = 'CLC';
 if ($parentid==34) $sidebar = 'Community Link';
 if ($parentid==11) $sidebar = 'Recycle Scotland';
 if ($parentid==12) $sidebar = 'Stepping Stones';
 $page = get_post($parentid);
 $parentid = $page->post_parent;
}
dynamic_sidebar($sidebar);

eventually when you functionize this, this should end up in your template:

dynamic_sidebar(eval_sidebar($pageid));

with eval_sidebar being your new function, which returns the name of the sidebar, given a page ID.

alexleonard
Member
Posted 1 year ago #
Ivovic, another brilliant point there.

It never occurred to me to just declare a default $sidebar value :)

So, it's all working and I've turned it into a function successfully (although I'm not sure how tidy it is ;) - I'm not sure I would have gotten there without you, and I'm starting to understand more and more.

In my header I can now assign a class to the body with:
```
<body class="
<?php echo eval_page($post->ID);?>
">
```
and in my footer I can call different sidebars with:
```
<ul>
<?php dynamic_sidebar(eval_page($post->ID)); ?>
</ul>
```
And here's my eval_page function:
```
function eval_page($pageid) {
 $pageval = get_post($pageid); // variable assignment unnecessary?
 if (is_page() && $pageval->post_parent ) {
 $parentid = $pageval->post_parent;
 } else {
 $parentid = $pageval->ID;
 }
 $eus_page = "Default"; // Set the page type as default

 while ($parentid) {
 if ($parentid==20) $eus_page = 'CLC';
 if ($parentid==34) $eus_page = 'Community Link';
 if ($parentid==11) $eus_page = 'Recycle Scotland';
 if ($parentid==12) $eus_page = 'Stepping Stones';
 $page = get_post($parentid);
 $parentid = $page->post_parent;
 }

 return $eus_page;

}
```
It all works (which partially amazes me) and I'm thrilled. As per usually if there's a neater way to do it, then please feel free to dissect!

Of course, there's a couple of considerations..
1. If the website ever has a 'new' section added, then the function will have to be adjusted.
2. I've just realised that each of this organisation's "Projects" might require a "News" page of their own - so I've got to add parameters for single.php so that if in_category... then return the right $eus_page so that people aren't having sidebars changing randomly on them!
Again, many thanks for all the advice :)
Ivovic
Member
Posted 1 year ago #
As far as I can see, in order to keep your sidebar names in one spot only, you have to pull $pageval up the top there.

So, no it *is* necessary with the code you have... but let's see... I don't really think you need that top section, and now that I've had a coffee I'm prepared to say it :P

does this still work?
```
function eval_page($pageid) {
 $eus_page = "Default"; // Set the page type as default
 while ($pageid) {
  if ($pageid==20) $eus_page = 'CLC';
  if ($pageid==34) $eus_page = 'Community Link';
  if ($pageid==11) $eus_page = 'Recycle Scotland';
  if ($pageid==12) $eus_page = 'Stepping Stones';
  $page = get_post($pageid);
  $parentid = $page->post_parent;
 }
 return $eus_page;
}
```
see how you were filling that 'necessary' variable? now it just happens a bit later in the while loop unless the match is found before that even happens.

The only other issue I can see is that your body class names now have spaces in them, which I don't think is ideal. That's easily fixed though.

You're welcome by the way, it's been fun trying to code and juggle other stuff at the same time - I don't do it very often, so I'm glad its YOU dealing with the fallout ;)
alexleonard
Member
Posted 1 year ago #

I can't believe I forgot about the class names with spaces being a problem!

I was so focussed on getting the value returned that I didn't care what it was :)

I'm going to test this out now.
alexleonard
Member
Posted 1 year ago #

Hmm, it looks like it just hangs - not even returning an error - so I assume it's caught in an endless loop (seeing as the first time it's executed is at the body element, that would explain why none of the page loads).

I'm going to fiddle around with a few more options to see if I can work out what's causing it - I'll probably take the function out of the body to see where it's getting to - go back to echoing the pageid so I can see what it's printing!

Ivovic
Member
Posted 1 year ago #

ahh sorry, I changed variable names, and missed a spot.....

function eval_page($pageid) {
 $eus_page = "Default"; // Set the page type as default
 while ($pageid) {
  if ($pageid==20) $eus_page = 'CLC';
  if ($pageid==34) $eus_page = 'Community Link';
  if ($pageid==11) $eus_page = 'Recycle Scotland';
  if ($pageid==12) $eus_page = 'Stepping Stones';
  $page = get_post($pageid);
  $pageid = $page->post_parent;
 }
 return $eus_page;
}

I desperately need sleep, but my altered state of mind says this *should* work. I'm off to bed now, so I sincerely hope it does :)

good luck, lol

alexleonard
Member
Posted 1 year ago #

Oh I was thinking about the class names in the body - the only reason I had originally returned those longhand names is because I thought it would be more human readable to have the sidebars named after each project - and whilst I can still call the Default sidebar with

dynamic_sidebar(1);

I thought I might be less likely to mess things up if I used longhand strings.

At first I thought that I'd have to run switch and assign proper class names to the body, but then I thought about trying this:

echo str_replace(' ', '', (eval_page($post->ID)));

Which seems to work nicely.

Now, back to the other issue :)
alexleonard
Member
Posted 1 year ago #

Heh, we were writing at the same time there.

Aye, I'm not sure how much longer I'm going to last now. I've been working for the last 14 hours so I'm probably not at my sharpest either.

Absolutely legend amount of help there though! Can I buy you a beer somehow?
alexleonard
Member
Posted 1 year ago #

Legend, that worked a charm. I only wish I'd spotted the wayward $parentid - I was sure I'd double checked all the variable names.

I guess it's a good reminder of the importance of good naming structures for your variables - all of these ID's, post ids, page ids, etc, it gets a bit confusing :)
alexleonard
Member
Posted 1 year ago #
So I've now managed to structure it so that the function assigns the right sidebar and class when you're viewing a single post from category that relates to that project

(I'm now forced to ensure that each project author can only assign to his project category...)

Anyway, here's how the function is shaping up:

FUNCTION
```
function eval_page($pageid,$single=FALSE) {
 $eus_page = "Default"; // Set the page type as default
 if ($single==FALSE) { // If the page isn't a single post, then work out what project the page belongs to.

 while ($pageid) {
 if ($pageid==11) $eus_page = 'Recycle Scotland';
 if ($pageid==12) $eus_page = 'Stepping Stones';
 if ($pageid==20) $eus_page = 'CLC';
 if ($pageid==34) $eus_page = 'Community Link';
 $page = get_post($pageid);
 $pageid = $page->post_parent;
 }
 } else {
 if ( in_category(4) ) $eus_page = 'Stepping Stones';
 if ( in_category(5) ) $eus_page = 'CLC';
 if ( in_category(6) ) $eus_page = 'Community Link';
 }
 return $eus_page;
}
```
I figure I could probably work these things together by dropping the if/else and any use of is_single by doing something like
```
while ($pageid) {
 if ( ($pageid==11) || (is_category(3) ) ) $eus_page = 'Recycle Scotland';
```
but I'll have to test that.

USAGE

And so in my header.php and footer.php I'm getting class and sidebar with:
```
<body class="<?php
echo str_replace(' ', '', ( eval_page( $post->ID, is_single() ) ) );
?>">
```
and:

dynamic_sidebar( eval_page( $post->ID, is_single() ) );

It all seems to work solidly. I also assume that if my above assumption about being able to just combine my $pageid and in_category is true, then I could probably include is_category(3) to ensure the correct sidebars on category pages (i'm not even going to think about sub-categories right now.

This is the danger with offering different page colouring for sub sections of a website..
Ivovic
Member
Posted 1 year ago #
I just got back to my desk... lemme dig through a little stuff here, but in the mean time I want to suggest making a little shift in thinking...

I think it would be a mistake to lump all this into a single function because I'm sure that would triple the necessary length of it all. Instead, lets consider breaking this up into more managable (and therefore more updatable) smaller functions.

For example...

Evaluate for Page Templates: eval_page();
```
function eval_page($pageid) {
 global $eus_page; //global, because it's just that useful.
 $eus_page = "Default"; // Set the page type as default
 while ($pageid) {
  if ($pageid==20) $eus_page = 'CLC';
  if ($pageid==34) $eus_page = 'Community Link';
  if ($pageid==11) $eus_page = 'Recycle Scotland';
  if ($pageid==12) $eus_page = 'Stepping Stones';
  $page = get_post($pageid);
  $pageid = $page->post_parent;
 }
 return $eus_page;
}
```
I quite liked the simplicity of this, so I vote to keep it (with a little modification, which will allow us to call the right sidebar, regardless of what the hell is going on elsewhere.

don't worry about all that is_single stuff, lets work on that elsewhere.

I'm gonna break this up into bite-sized posts so it's easier to follow, so bear with me as I keep posting chunks.

In the mean time, I propose a new function to be used in the sidebar, while the above function is used on PAGE TEMPLATES only like page.php and friends to construct the body tag.

...

Because the body tag is *always* set before the sidebar is called, and because it relies on context-sensitive information like IDs etc, the bulk of the work need be done at that point. For the sidebar, we don't want to do it again. Instead lets just grab the work we've already done.

Evaluate Sidebar: eval_sidebar();
```
function eval_sidebar() {
  global $eus_page;
  return $eus_page;
}
```
tada. This should be used to put the value we prepared earlier, into the dynamic sidebar. I'll refer to this function in my next post too, bear with me. We're still only on pages... I'll get to single posts in just a minute.
Ivovic
Member
Posted 1 year ago #
ok, now we can deal with single posts...

Given that single posts have their own template file, there's absolutely no reason to complicate things by processing posts and pages in the same function... as long as we can still put our results into the sidebar, we're golden.

so lets think about a new function.

Evaluate for Single Posts: eval_post();
```
function eval_post() {
  global $eus_page;
  $eus_page = "Default"; // There must be a fallback
  $post = $wp_query->post; //pull $post so in_category works (not sure if necessary, but unable to test right now)
  if (in_category(4)) $eus_page = 'Stepping Stones';
  if (in_category(5)) $eus_page = 'CLC';
  if (in_category(6)) $eus_page = 'Community Link';
  return $eus_page;
}
```
just like your eval_page function, this resides inside the body tag, but only in single.php.

This is where you can decide on a sidebar priority system. Simply decide which sidebar is more important, if by chance your post happens to be in two or more of these categories, which of course, should be discouraged.

Whichever is the HIGHEST priority should appear at the END of the list. Does that make sense?

but that doesn't really deal with every possible case... you might want to put your posts in sub-categories of these categories. What then? *home alone face*

Mind if I address that a couple of posts from now?... let me construct the meat of that first, but for a different purpose.

remember... eval_sidebar(); is still sitting there in the sidebar template, just fishing these global $eus_page values out of the air, as required... because the body tag always happens before we get there.
Ivovic
Member
Posted 1 year ago #
I'm making an aside here and giving you something you didn't ask for, because I think I can sort of predict where we're going here...

What about browsing category archives? surely you'll want to be able to click on category names and view all posts in that category - in the same style as the posts themselves, right?

Right.

so lets deal with styling the category archive pages. As it turns out, it's actually easier to do this with names, so I hope that's not a problem...

Evaluate for Category Archives: eval_cat();
```
// feed me the category ID when you call me in the body tag
function eval_cat($catid) {
  global $eus_page;
  $eus_page = "Default"; // what? you again!?
  $post = $wp_query->post; //pull $post so is_category works (again not sure if this is necessary, you find out :) )
  $categories = explode('|',get_category_parents($catid,false,'|'));
  if (is_category(4) || $categories[0]=='Cat4Name') $eus_page = 'Stepping Stones';
  if (is_category(5) || $categories[0]=='Cat5Name') $eus_page = 'CLC';
  if (is_category(6) || $categories[0]=='Cat6Name') $eus_page = 'Community Link';
  return $eus_page;
}
```
this will (and I use the term 'will' loosely) work when browsing top-level categories, and any children of those categories... or their children and so forth.

So, lets say you have subcategories of Community Link called "Free booze and haggis", you'll be able to browse that subcategory in the same style as the commlink section.

again.. the sidebar on your cat archive pages will be proudly brought to you by eval_sidebar() and global $eus_page.

...

Which brings me back to the single posts business (remember *home alone face* ?)

What if a post is ticked as being only in "booze and haggis"? It won't be directly flagged as being a part of the community link section, because in_category(6) won't trigger.

So we need to extend eval_post() to make that work too...

This will take a sec to cobble together, make yourself comfortable (and forgive me for any errors, as again I won't be curteous enough to actually test this beyond the code snippits I'm stealing from my functioning blog (sorry)...
Ivovic
Member
Posted 1 year ago #
It's at this point that you ask yourself: "does he want to sleep with me?

No, actually this is going to be useful for the next phase of a project I've started recently, so it's as much for me as it is for you :)

...

I also realised I forgot to mention - most templates open the body tag in the header.php... in order for your life to remain livable, I would suggest you don't do that.

Instead take the navigation/banner/bullshit components out of your header template and open the body in the *actual template you're using to display your content*

for example:
```
<?php get_header(); ?>
<body class="<?php eval_func($seed); ?>">
 <div id="page">
 <?php include (TEMPLATEPATH . '/navigation.php'); ?>
```
note the use of the include. This lets you keep your navigation separate from each template (in a template of its own), but also separate from the header, so you can jump in-between with the glorious body tag.

The capital TEMPLATEPATH is a bona-fide constant, not something you need to replace with your template path.
Ivovic
Member
Posted 1 year ago #
ok... back to the single posts, and making them work regardless of how many sub-sub-cats deep your post is being categorised under.

Lets replace the eval_post() function:

Evaluate for Single Posts: eval_post(); - redux -
```
//feed this function with get_the_category()
//when calling it in the single post template body tag.
function eval_post($categories) {
 global $eus_page;
 $eus_page = "Default"; // Again with the default
 //for every cat we're associated with
 foreach($categories as $category) {
 //pull the parents
 $parentcats = explode('|',get_category_parents($category->cat_ID,false,'|'));
 //remember, most important cat goes LAST in case of multiple membership
 if ($category->cat_ID==4 || $parentcats[0]=='Cat4Name') $eus_page = 'Stepping Stones';
 if ($category->cat_ID==5 || $parentcats[0]=='Cat5Name') $eus_page = 'CLC';
 if ($category->cat_ID==6 || $parentcats[0]=='Cat6Name') $eus_page = 'Community Link';
 }
 return $eus_page;
}
```
due to the relative complexity of this, and the fact that I haven't actually put it in a page to test it... this is the least likely of all to work... so do let me know how you go, and we'll work on making it happen. Don't be discouraged immediately, I'm confident it'll go.

in the body tag of your single.php, you'll then need to call this function as follows:
```
<?php eval_post(get_the_category()); ?>
```
This is to ensure that you're passing all of the current post's associated categories, whose parents should be discovered.

Time for a coffee... I'll be around working on some junk, so when you get to this, I won't be too far off.
alexleonard
Member
Posted 1 year ago #

That's a legend amount of work there :)

I'll have a to trawl through it to work out what's going on exactly. Back at my computer after a nice long weekend away. I'm glad to hear this will be useful to you as well now, always good to see something being reused.
alexleonard
Member
Posted 1 year ago #

Hey Ivovic,

Well it's been a mammoth 3 weeks since I last worked on this. The joy of a client not getting content to me when expected. Hence forth I had to sideline it and focus on some other stuff.

I'm now returning to it with a vengeance (they suddenly want the site live tomorrow - I don't think that's going to happen - in their eyes, it's ready to go, in my web design attuned eyes, it's a million miles away!).

Anyway, not sure if you're still around, but I have a feeling I'll be posting more stuff up here soon.

And if I miraculously don't have any questions, I'll hopefully be posting a finished site live link!
alexleonard
Member
Posted 1 year ago #
Actually I do have a question - before I go digging and testing things out. Will the eval_cat function work much the same for general archives rendered with the archives.php template?

I'm not too concerned about it as I haven't gotten near that point, but will probably look at it later.

I'm about to move on to single posts, so will be interested to see how that works out.

I'm pleased to report that your eval_cat function works beautifully!

I did need to grab the category ID outside of the loop, but that seems to work well on my category.php template file using:
```
<?php $catid = get_query_var('cat'); ?>
<div id="bd" class="categories <?php echo str_replace(' ', '', ( eval_cat( $catid ) ) ); ?>">
```
(reason for grabbing category id outside of the loop was to avoid much repeating of code)
With my str_replace giving me a class name with no spaces. It looks like fortunately I don't have to worry about moving the body element out of header.php as I noticed that my template already has a div id="bd" just after the header call and allows me to do all of the required section colouring that I need. Of course, if they wanted different site background colours, well that would be a different question.. but fortunately they don't!

Onwards.

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