New snippet: hascontent

[iceat]

A new snippet which you can use to check if a section block contains content on the current page. You can use this in your template to hide blocks of html when they're not needed. This way you can make your template smarter (and you don't need to create multiple templates just for changing small details in the page layout).

This is how you use it:

Code:

<?php if (hascontent(XXX) == true){ ?>
BLOCK OF HTML TO SHOW OR HIDE
<?php } ?>

Replace 'XXX' with the section block id.

I haven't checked if it already exists. But I needed it, so I coded it.

[aadwagner.nl]

Sounds great! Small question:

When you say section block id... do you mean the CSS-name of a content-block? Or do you mean the WB section ID number?

[crnogorac081]

Hi,

obviously section id from WB

[mr-fan]

hi,

i've used similar with checking if a whole content block has content to setup html output in templates

like this:

Code:

<div id="tertiary">
      <div class="content">
          <?php //page content 2
             if ($page_content_2 != '') {
             echo '<div class="roundbox"><h3 class="gradient">Additional Box 2</h3>'.$page_content_2.'<p class="last"></p></div> <!--end Box-->';
              } else {
             echo '';
             }?>
          <?php //page content 3
             if ($page_content_3 != '') {
             echo '<div class="roundbox"><h3 class="gradient">Additional Box 3</h3>'.$page_content_3.'<p class="last"></p></div> <!--end Box-->';
              } else {
             echo '';
             }?>

only thing is to load the content blocks with ob_start like this - i put this at the beginning of every template:

Code:

<?php //for the color
        ob_start();
page_content(1);
$page_content_1 = ''.ob_get_contents();
ob_end_clean();

ob_start();
page_content(2);
$page_content_2 = ''.ob_get_contents();
ob_end_clean();

ob_start();
page_content(3);
$page_content_3 = ''.ob_get_contents();
ob_end_clean();

best regards
martin

[iceat]

Sounds great! Small question:

When you say section block id... do you mean the CSS-name of a content-block? Or do you mean the WB section ID number?

I mean the ID of the content block (for example: show_content(2) -> the id is 2)

[aadwagner.nl]

So if I have three (white) contentblocks in my template they will only appear when it has content? Right? 

[iceat]

yep

[aadwagner.nl]

I will check it out. Nice and timesaving snippet!! Thank you for sharing! 

[Argos]

Nice one! Thanks for sharing.

[aadwagner.nl]

I tested it... It's just perfect!!

 

[elarifr]

hi mr-fan
i was working to check if page_content is empty until i found this thread now
may you plese check this post
http://www.websitebaker2.org/forum/index.php/topic,16228.msg121434.html#msg121434


in fact if i use something like

Code:

empty($content ) or ==""

it is always false as the output filter add an anchor to each block !

Code:

<a class="section_anchor" id="wb_17" name="wb_17"></a>

VotreEspace proposed a workaround
http://www.websitebaker2.org/forum/index.php/topic,16228.msg121446.html#msg121446

Code:

if((strlen($out1) < 60) && (substr($out1,0,2) == '<a') && (substr($out1,-4) == '</a>')) {
echo 'YOUR DEFAULT CONTENT';
} else { echo $out1; }

[iceat]

Too much code, just use my snippet

[aadwagner.nl]

I agree with Iceat 

[elarifr]

i agree it's too much code !

but the snippet must be added fist and you have to check is exist before
it consume an sql query to check, and then page_content wil make the same query to ouput the content if not empty
you need to know the id of the block

so hascontent can be used in some case

in fact i was just looking if mr-fan had tested his code with wb2.8.1 ?

thanks

[iceat]

i don't think the extra query (or queries) will slow the website down, it's really straight-forward.

[aadwagner.nl]

Maybe there should be a small readme file. I think it's not all clear to people howto implement it in their template 

[iceat]

read my first post

No, I'll create a small webpage for it

[aadwagner.nl]

That would be nice

[mjm4842]

According to the source code, the snippet doesn't check to see if there is any content. It only check to see if there are sections on the given page. Even if the sections are empty, the snippet will still return true.

[iceat]

That's correct! But why would you add modules without output to a section?

Btw, I finished the new version of hascontent. This time it only uses one query to check all of your sections.

On top of that you can use it to check if a page has submenu-items, or is part of a submenu. This way you can show/hide menu blocks.

I'll release it with my new website later this month.

[mjm4842]

Hi iceat,

Thank you for taking the time to respond and contributing your snippet. While it does not address my current need, I may very well have a need for it in the future.

The reason it is important for me to detect if the section is empty is because there are parts of the webpage that actually only show up if there is content. If there isn't any content, the sections automagically vanish.

The reason I have empty sections is because I have a Global-Blocks page is pre-configured with multiple sections.  My clients like things very simple and are not the kind to think about creating sections if they don't already exist on a page. So most of the time, the sections just sit there empty. It's actually pretty cool.

Just trying to keep WebsiteBaker as simple to use as possible for my clients.

Best regards,

Michael

[Vincent]

Comes in very handy. Thanks for sharing.

Vincent

[Hans]

Hello Iceat,

any news regarding the new version and the website? (http://www.websitebaker2.org/forum/index.php/topic,18231.msg126734.html#msg126734)?
Thanks
Hans

[Re-Mi]

Hi,

I know it's an old thread. But i hope someone can help me.

I'm using hascontent for a website i'm currently developing. On my local server it works just fine and exactly as it should

But after uploaded to the external server the defined content doesn't show up anymore.

I'm using the latest WB 2.8.2
And this is the piece of code i'm using. As you can see, im using hascontent(2) 2 times but changing that doesn't work.

Code:

<?php if (hascontent(2) == true){ ?>
<div class="contenttitel"><?php echo WEBSITE_HEADER; ?></div>
<div class="slider"></div>
<div class="frontblokken">
<div class="blok1"></div>
<div class="blok2"></div>
<div class="blok3"></div>
</div>
<?php } ?>
<?php if (hascontent(1) == true){ ?>
<?php page_content(); ?>
<?php } ?>
</div>
<?php if (hascontent(2) == true){ ?>
<div class="frontcontent">
<div class="frontcontentlinks"><?php page_content(2); ?></div>

</div>
<?php } ?>

Hope someone can help me

[DarkViper]

here is a new version of this small function. Recoded and tested for all WB 2.8.x versions

Code: (/template/index.php)

<?php
/**
 * returns TRUE if at least one section is assigned to the requested 
 * block on the current  page. Otherwise returns FALSE
 * !! the function does not care for visibility and rights of the content !!
 */
function hascontent($iBlockId) 
{
global $database;
$sql = 'SELECT COUNT(*) FROM `'.TABLE_PREFIX.'sections` '
     . 'WHERE `block`='.intval($iBlockId).' AND `page_id`='.intval(PAGE_ID);
return (intval($database->get_one($sql)) != 0);
}
?>

...

<?php if (hascontent(2)) { ?>
    <div class="frontcontent">
        <div class="frontcontentlinks"><?php page_content(2); ?></div>
    </div>
<?php } ?>