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1. Anydog
   Member
   Posted 1 month ago #

   Hi.
   Please help !
   I have a problem regarding some IFELSE condition with subacategories. I use post_is_in_descentant_category function:
   

   <?php
   if ( $kat = 3 || post_is_in_descendant_category( 3 )  ) {
   	echo ('this is category 3 or it's descendant');
   }
   elseif ( $kat = 4|| post_is_in_descendant_category( 4 ) ) {
   	echo ('this is category 4 or it's descendant');
   }
   ?>

   When I'm in category 3 it works, but when it comes to "elseif" with category 4 it fails. Categories and subcategories are proprely set, there is no error there.
   I am obviosly missing something obviouis ... ;-)

   Thanks for help, you anonimous stranger !
   Alen

2. apljdi
   Member
   Posted 1 month ago #

   $kat == 3 -- two equal signs. With one equal sign you are assigning a value to the variable, so in the first line you are setting $kat to 3. With two equal signs you are checking or comparing values, which is what you want.

3. Anydog
   Member
   Posted 1 month ago #

   Hi,
   thanks for your help but still nothing ... :-(

   <?php
   if ( $cat == 3 || post_is_in_descendant_category( 3 )  ) {
   	echo ('this is category 3 or it's descendant');
   }
   elseif ( $cat == 4 || post_is_in_descendant_category( 4 ) ) {
   	echo ('this is category 4 or it's descendant');
   }
   ?>

   -- don't work
   I even tried it with in_category( 'category_name' ), still nothing ...
   Could it be that this doesn't work with multiple conditions ?

   Thanks,
   Alen

4. Anydog
   Member
   Posted 1 month ago #

   Hah resolved it !
   With a little help of great programmers mind and Google...
   I found it here - http://www.sandboxdev.com/blog/518/get-top-parent-category-wordpress/ and implemented it this way (if anyone can benefit from it ... ):
   

   <?php
   $parentCatList = get_category_parents($cat,false,',');
   $parentCatListArray = split(",",$parentCatList);
   $topParentName = $parentCatListArray[0];
   $sdacReplace = array(" " => "-", "(" => "", ")" => "");
   $topParent = strtolower(strtr($topParentName,$sdacReplace));
   echo $topParent;
   if ( $topParent == 'parent_category_name1') {
   echo 'this is child of parent named '.$topParent;
   }
   else if ($topParent == 'parent_category_name1') {
   echo 'this is child of parent named '.$topParent;
   }
   ?>

   That's it. Off course, replace 'parent_category_name1' and 'parent_category_name2' with your categories and echo ... with whatever you want to do for selected (parent) category.

   Bye and good luck,
   Alen

5. apljdi
   Member
   Posted 1 month ago #

   Did you also include the post_is_in_descendant_category() function in your code? It isn't a core function.

6. Anydog
   Member
   Posted 1 month ago #

   No, I discarded that function, because this works perfectly. There are some other solutions, here on Codex, with post_is_in_descendant_category, but none of them worked for me ... Yeah, I supposed that function post_is_in_descendant_category is not a core function, but it exsisit, probably somewhere in wp-includes folder.
   By the way, there is a small typo in the code above - complete correct code is:
   

   <?php
   $parentCatList = get_category_parents($cat,false,',');
   $parentCatListArray = split(",",$parentCatList);
   $topParentName = $parentCatListArray[0];
   $sdacReplace = array(" " => "-", "(" => "", ")" => "");
   $topParent = strtolower(strtr($topParentName,$sdacReplace));
   echo $topParent;
   if ( $topParent == 'parent_category_name1') {
   echo 'this is child of parent named '.$topParent;
   }
   else if ($topParent == 'parent_category_name2') {
   echo 'this is child of parent named '.$topParent;
   }
   ?>

   Replace 'parent_category_name1' and 'parent_category_name2' with your categories.
   That's it.
   Good luck coding and support Wordpress
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7. apljdi
   Member
   Posted 1 month ago #

   ... but it exsisit, probably somewhere in wp-includes folder.

   No it doesn't. Grep your directory. Unless you include the function somewhere it does not exist.

8. Anydog
   Member
   Posted 1 month ago #

   Oh.
   So it doesn't.
   OK, then I should have include the function in the functions.php or somewhere, probably ... ?
   Yeah. Here http://codex.wordpress.org/Function_Reference/in_category it says I shoud do that ...

   Hmmm ... Too bad my code up works, I don't really feel like testing post_is_in ... function, 'cause I'm affraid I'm gonna mess something up .... ;)
   Well, perhaps I will ...

9. apljdi
   Member
   Posted 1 month ago #

   If what you've got works for your purposes, all you have to gain by going back to the other function is a little bit of execution speed-- maybe. Unless you obsess about thousandths of a second, it probably isn't worth it.

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