Field - Gallery

Good point. I remember I have written the same idea and request before. Can't recall the exact topic/comment, sorry.

Unfortunately, there is no configuration parameter, but it should be technically possible.
The list field output template checks the value for "empty". If true, it returns nothing. The usual output and DIV markup is skipped.

For instance, take the list.php as a reference, copy and rename it to your liking. Select your new template in field parameters. This method is comparable to the core Joomla feature "Alternative-Layout". Just on field level.

template location: yourJoomla/components/com_cobalt/fields/gallery/tmpl/output/…

I guess, you can also "override" the original field template through files in yourJoomlaTemplate/HTML/…
This would be a global change for all list.php usages.

Some ideas:

Either remove/comment the EMPTY-check at the beginning. This would result in an empty DIV container with classes and inline styles for thumbnail width/height. Then you could apply a custom FIELD CLASS in backend field parameter. This allows to target all gallery fields and you could apply a background color or image by CSS.

Or you could keep the RETURN... but "echo" your placeholder image and HTML right beforehand. This way, you would have full control about the html markup!
If you don't want "hardcode" your image name, you might create an extra variable which holds a special class name like "myplaceholder". Hence the last couple of code lines in the template. Search for "wrapper-list"... Just append your variable to the existing classes. Then you can control background image and color by this CSS class. Benefit: You apply the background to really empty DIVs, and not all galleries.

Спасибо!!! Попробую переделать. Хотя я плохо разбираюсь в программировании, не уверен что получится???? Может кто и делал такое, буду рад если поделитесь шаблоном поля. Еще раз спасибо за направление куда идти, в данном случае.

Demon Спасибо!!!

You are welcome. I an not a PHP Guru myself ;) Syntax plus HTML and JS can be hell :)

If you have any problems, I could search my draft example and post my file here.
Maybe tomorrow. I am really short on free time, sorry.

Да, тут только в шаблоне делать вывод. Лучше делать копию шаблона вывода поля. Если данных нет, то просто выводить картику по умолчанию.