Looking for a way to create a listing of one extra fields that links to the full item.
We use for example extra field ID 10 for a special title and just want to show this list of titles.

I have found many listing modules but none of them just does this.
It seems so simple that I am even thinking about looking at the example plugin :-)

We want to display it in the body but of course a module in loadposition will also do the trick.

Suggestions welcome.

Bastiaan

Can you give few examples at live sites ?

Not sure if it is of any use but here you go:

marleensboekvandeweek.nl

We have book reviews and use the extra fields for a lot of additional fields, like subtitle , but alos the block below has been redone with custom fileds following this: jurawa.com/notes/item/27-update-2-making-k2-more-like-a-true-cck-custom-admin-templates-and-calling-specific-extra-field-data

My client wanted to use the title for the teaser so I had to make a subtitle extra field showing the booktitle.
Now she wants to list the booktitles....

It is New Year man, and i made a test specially for you.

Put K2 content module where you want your display, strip in iz everything except "extra fileds" and in your template override (template/yourtemplate/html/mod_k2_content/yourcustomtemplate/default.php change

<span class="moduleItemExtraFieldsValue"><?php echo $extraField->value; ?></span>

to

<a class="moduleItemExtraFieldsValue" href="<?php echo $item->link; ?>"><?php echo $extraField->value; ?></a>

It will style all your extra fileds that way but you get picture how to use forum and echo just one extra filed and set it as link to Item.

If you want to use template override and Css4K2 it is up to you. If you chose to link just one extra filed then you can change default.php in K2 folder. But you will get it as link in every K2 content module. Suit yourself best.

yes Happy New Year!

Thanks for helping out, appreciated!

Good idea to use a content module with override and subtemplate for experiments.

Issues:
I need to display only 1 specific extrafield , not all.

On the site I use this code:
<!-- Call to prepare extra fields -->
<?php
//convertArray to use ids as key
$extrafields = array();
foreach($this->item->extra_fields as $item)
{
$extrafields[$item->id] = $item->value;
}
?>

and then

<?php echo $extrafields[10];?>

to show the titel.

When I create a 'naked' content module with only extra fields (still with original code) I get them all.
Not sure I can somehow filter it out by ID or that I need to use the code above to get back to the right field.

I have found that you can call an extra field by alias, not sure this also works in a module:

$this->item->extraFields->EXTRAFIELDALIASHERE->value

I am not good enough in PHP to understand where and how I could use this to generate the a listing.

Dont know if module is prepared for this in its PHP files, as category and item.
I am just trying to make it works with simple menu link to K2 categories. But i have that damn problem that Css4K2 is not working OK in Joomla 3.

I cannot force my setting in menu link for custom K2 template, and simply cannot test anything.
Css4K2 give advantage to K2 category template setting, not Menu K2 link setting, in simple word it is not working.

I know it is easy and possible.
- Chose Menu link
- Chose several (or one) categories.
- Disable aspolutely everything from view.
- In your custom K2 template category_item.php disable options for K2 to check for settings for extra fields, if they are activated for view in category listing, or not.
- And put your code for custom /specific) extra field.

This line is important, disable checking in K2 category parameters.

<?php if($this->item->params->get('itemExtraFields') && count($this->item->extra_fields)): ?>

There is not point i test it on my old Joomla instlation because you use latest 2.6.2 K2 version. And latest modules, codes.

Btw problems like this are reason why i long ago started to learn Drupal. And i regret i didnt do this earlier.

Joomla community have precis started to catch with Wordpress (yes, they are years ahead of Joomla), not mention Drupal. With philosophy like this maybe they will be as Drupal for 15 years, if they dont end as Mambo.

OK got it working with some workarounds:

Needed to have more than one category to be able to choose a subtemplate
Used the extrafield alias in category-items and did some CSS to get it look better.

Thanks for the suggestions! (and agree it is a pain, compared to standard Joomla or Drupal)

Can you please put your tweak code here ? I cannot make it work unless K2 Category has enabled view of extra fields in Category layout. It it some solution you sometime dont want at whole page.

I meant more Joomla as platform, not K2. If Joomla was more as Drupal it would not be difficult to show specific field wherever you want. Like it is now every extension, module and plugin are macrocosmos for itself.