how to get content from another module - symfony

I need to get fields from another module. How can I do this in symfony? (e.g.: I'm need s开发者_开发问答omething from module="x" to be working in the showSuccess.php from module="y")

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The only options I know would be either to make a com-class, which stores relevant values of other modules or to hand over the special information from Module x to y.

http://symphony-cms.com/learn/concepts/view/url-parameters/