Conditional for parent category

  • Resolved foochuck

    (@foochuck)


    14 years, 11 months ago

    I have a parent category:

    News

    And under that categories I have sub categories

    Sports, Featured, & Breaking

    I’m using is_category('news'); to check whether the current page is the News, however if the user lands on one of the posts from the children categories sports, featured & breaking, I’d like to check to see if the parent is News with an if statement.

    I have looked through the Codex and have not been able to find the code to accomplish this. Any suggestions?

    Thanks!

Viewing 14 replies - 1 through 14 (of 14 total)
  • esmi

    (@esmi)

    14 years, 11 months ago

    The obvious solution would be to use:

    <?php if ( in_category( array( 'Sports', 'Featured', 'Breaking' ) )):?>
[do stuff]
<?php endif;?>

    http://codex.wordpress.org/Template_Tags/in_category

    Thread Starter foochuck

    (@foochuck)

    14 years, 11 months ago

    esmi,

    Is there a dynamic solution? This list of sub categories is going to continue to grow and I’d like to set it up so it’s a dynamic reference to the parent (news) category.

    -foo

    esmi

    (@esmi)

    14 years, 11 months ago

    You could write a conditional based on get_ancestors.

    <?php
// Assumes the id of the News category is 20
$in_news = 0 // set a flag varable to false
$cats = get_the_category();
foreach ( $cats as $cat ) {
	if( in_array( '20', get_ancestors( $cat, 'category' ) ) ) $in_news = 1; // set flag to true
}
if( $in_news == 1) :
[ do stuff ]
else :
[ do other stuff ]
endif;?>

    http://codex.wordpress.org/Function_Reference/get_the_category
    http://codex.wordpress.org/Function_Reference/get_ancestors

    Thread Starter foochuck

    (@foochuck)

    14 years, 11 months ago

    esmi,

    This is the code I’m using, however it’s not working correctly:

    <h1 id="logo">
<?php
$in_news = 0; // set a flag varable to false
$cats = get_the_category();
foreach ( $cats as $cat ) {
	if( in_array( '23', get_ancestors( $cat, 'category' ) ) ) $in_news = 1; // set flag to true
}
if( $in_news == 1 || is_category(23)) : ?>
<a href="http://localhost/test"><img width="345" height="176" src="http://localhost/test/wp-content/uploads/logo-old.png"></a>
<?php else : ?>
<a href="http://localhost/test"><img width="345" height="176" src="http://localhost/test/wp-content/uploads/logo.png"></a>
<?php endif; ?>
</h1>

    The else works on all pages. ‘is_category(23)’ works for the news page. However for all news sub categories, it’s showing logo.png instead of ‘logo-old.png’

    Michael

    (@alchymyth)

    14 years, 11 months ago

    are you using this in a category archive psge?

    the get_the_category(); part is based on the assumption that this is in a single post template (single.php).

    for a category archive page, try to rewrite the code to:

    <h1 id="logo">
<?php
$in_news = 0; // set a flag varable to false
if( in_array( '23', get_ancestors( get_query_var('cat'), 'category' ) ) ) $in_news = 1; // set flag to true

if( $in_news == 1 || is_category(23)) : ?>
<a href="http://localhost/test"><img width="345" height="176" src="http://localhost/test/wp-content/uploads/logo-old.png"></a>
<?php else : ?>
<a href="http://localhost/test"><img width="345" height="176" src="http://localhost/test/wp-content/uploads/logo.png"></a>
<?php endif; ?>
</h1>

    n

    Thread Starter foochuck

    (@foochuck)

    14 years, 11 months ago

    I’m using this in header.php so it will be global throughout all pages on my site.

    Thread Starter foochuck

    (@foochuck)

    14 years, 11 months ago

    I should clarify, I’m using this in header.php but I need it to apply to single post pages, where you are seeing the permalink for a blog post.

    I need it to detect if the article has the parent news category.

    Michael

    (@alchymyth)

    14 years, 11 months ago

    I’m using this in header.php so it will be global throughout all pages on my site.

    however, the only two scenarios, where this makes sense, is a single post, or a category archive;

    possibly you need to combine both codes:

    example:
    http://pastebin.com/BAXjA1jj

    Thread Starter foochuck

    (@foochuck)

    14 years, 11 months ago

    That code works for the category pages, but not for the single post pages.

    Thread Starter foochuck

    (@foochuck)

    14 years, 11 months ago

    PS – I did change the 20 to 23 in your code for single post as that’s the correct ID for my news category, however it’s still not working.

    Michael

    (@alchymyth)

    14 years, 11 months ago

    as i copied the code of @esmi’s reply, i might hav ethe wrong cat id in this line (line 8):

    if( in_array( '20', get_ancestors( $cat, 'category' ) ) ) $in_news = 1; // set flag to true

    please have a look and correct it if neccessary.

    Thread Starter foochuck

    (@foochuck)

    14 years, 11 months ago

    Yes, I did catch that the cat id was off. No luck on the single post pages yet…

    Michael

    (@alchymyth)

    14 years, 11 months ago

    my bad – i missed to use the category ids from the single post for the comparison:
    (in line 8)
    if( in_array( '23', get_ancestors( $cat->term_id, 'category' ) ) ) $in_news = 1; // set flag to true

    new pastebin: http://pastebin.com/Y7fS27c6

    Thread Starter foochuck

    (@foochuck)

    14 years, 11 months ago

    I was just printing out the array and saw that too…thanks very much!

Viewing 14 replies - 1 through 14 (of 14 total)

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