TVCurrencyConverter: Auto-Updating Price TVs from Currency TVs in Evolution CMS

TVCurrencyConverter is a good example of a small Evolution CMS plugin solving a very practical ecommerce problem: editors enter a price in one currency, store the selected currency in another TV, and the final price TV updates automatically on save.

The plugin listened to OnDocFormSave, read the source TVs, looked up the current exchange value, and wrote the converted result into the destination price TV. It also supported the reverse scenario of recalculating many resources when the reference currency document itself was updated.

That made it useful for catalogs where editors needed to work in source currencies while the storefront still required one normalized sale price. In ecosystem terms, this is exactly the kind of addon that kept Evolution viable for real commerce workflows without requiring a heavy custom backend.

Source: Commerce category on Extras.Evolution.