I have the past few days reading about Cairngorm and, at all, i don't understand the concept behind de events and commands.
The people says that a event-command pair corresponds to a user gesture or system event: clicks, app init, etc. But when i browse the Cairngorm store app i found things like these: - Command modifies the model and the model notifies the view throw bindings: this seems logic to me. - Selecting a product in the view directly changes the model.selectedItem: where is the command?. What we have here is a user gesture and a model update without Cairngorm event or command. - Retrieving the products with a GetProductsCommand: what kind of event+command is this?. The system event shold be appInit or the like, and then usually you need to retrieve many things, not only products. Why server request = command? - Finally, the checkout process is divided in a sequence of commands. The user gesture is checkout, but the app uses serveral commands. This has no sense for me. I think the theory was right, but when applied is twisted to match the framework limitations. This is suposed to be the mother of the samples (an the only one, i think). Could any one clarify me when to use a command an how to explain the concept to other people? Thanks - Oscar
