[TYPO3-dev] Good practise for controller actions in general scope

[Klaus Heuer]

Hi List,
I have some logical trouble with an extbase action which is needed in 
different controllers.
I have an ajax/page-type request whicht I need in different conrollers - 
e.g. a product detail page which is loaded as an overlay in different 
views/controllers by jquery / ajax.

Normally I will move such stuff to a class in the utility folder and 
inject it in each controller. But in this case, I return a filled 
template an not a json string to the jquery request and this will not 
work with "utility classes".

So, what ist the best way?
- Copy the function (an even the template) to each Controller/Template Set?
- Inject a controller class by an other controller?
- Work with an abstract class (with repository injects in the abstract 
class?)
- Move it to an utility class an work with an json return (and build the 
template in the jquery function?)

..... I feel not really comfortable with each of this options

I think there must be smarter way :)

Thanks, Klaus