[wp-hackers] Can't use the same conditional tag twice?

[Jeremy Clarke]

Bryan,

query_posts() effectively says to WordPress "I know you THOUGHT you
should load these XYZ posts (home page, category listing, single
article, whatever), but actually what this page *IS* is something
else, and i'll tell you what with query_posts()". When you use it you
completely reset the page.

So if you are on the homepage and you do a query_posts('cat=1'); then
right before that line is_home() will be true but right after it will
be false. After that is_cat() would return true instead.

If you need extra queries you should just use the object instead:

$myposts = new WP_Query('cat=1');

Then you just need a slightly modified loop:

if ($myposts->have_posts() ) : while ($myposts->have_posts()) :
$myposts->the_post() ;

Until I figured that one out I was constantly having problems with
conditional tags not doing what I expected. Clean up your extra
queries and your life will be a lot simpler.

-- 
Jeremy Clarke | http://jeremyclarke.org
Code and Design | http://globalvoicesonline.org





On Mon, Aug 31, 2009 at 8:43 PM, Bryan Harley<bryanharley at gmail.com> wrote:
> Yes, I'm using query_posts.
>
> On Mon, Aug 31, 2009 at 1:13 AM, Dion Hulse (dd32) <wordpress at dd32.id.au>wrote:
>
>> are you using query_posts()?
>>
>> query_posts overrides the current query, Its not the best way to go about
>> what most people use it for.
>>
>> try adding wp_reset_query() iin your footer and see if that helps (for
>> future reference) - Or call it after query_posts is finished.
>>
>>
>> On Mon, 31 Aug 2009 12:37:00 +1000, Bryan Harley <bryanharley at gmail.com>
>> wrote:
>>
>>  Peter/Jeremy,
>>>
>>> I'm using the following code in both my header and footer.
>>>
>>> <li class="<?php if ( is_home() ) { echo 'current_page_item'; } ?>"><a
>>> href="URLHERE">Welcome</a></li>
>>>
>>> Here's the CSS:
>>>
>>> li.current_page_item a{border-bottom: 3px solid #ec1c24;}
>>>
>>> But the border is only showing in the header, not the footer.  To
>>> correct this, I left my header code the same and changed the footer
>>> code to:
>>>
>>> <li class="<?php if ( is_front_page() ) { echo 'current_page_item'; }
>>> ?>"><a href="URLHERE">Welcome</a></li>
>>>
>>> That solved the problem, but I don't understand why it just didn't
>>> WORK in the first place.  Which lead me to believe maybe you can only
>>> use one conditional tag per page.
>>>
>>> -Bryan
>>>
>>>
>>> On Thu, Aug 27, 2009 at 10:58 AM, Jeremy Clarke<jer at simianuprising.com>
>>> wrote:
>>>
>>>> On Wed, Aug 26, 2009 at 9:10 PM, Bryan Harley<bryanharley at gmail.com>
>>>> wrote:
>>>>
>>>>> It seems to me that you can't use the same conditional tag on the same
>>>>> page twice.  Can anyone else confirm this.  Why is this so?
>>>>>
>>>>
>>>> In my experience this is definitely not the case. You probably have
>>>> some kind of other issue with your template. Conditional tags would be
>>>> practically useless if they were limited to once per page.
>>>>
>>>>
>>>> --
>>>> Jeremy Clarke | http://jeremyclarke.org
>>>> Code and Design | http://globalvoicesonline.org
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>>
>> --
>> --
>> Dion Hulse
>> e: contact at dd32.id.au
>> w: http://dd32.id.au/
>> m: 04 6621 9112 (+614 6621 9112)
>> WordPressQI: http://wordpressqi.com/
>>
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