Infinite Loops - aareano/ifshop-wiki GitHub Wiki

An infinite loop occurs when an action triggers itself. Consider the following:

You've just put together a rule whose event is "a product is updated". You now create an action to "increase all variant prices by 10%", and you forget to filter the action in any way. The next day you go in and update one of your products, which, predictably triggers your rule. The action on the rule increases the price, as expected, but now, that since increasing the price is a product update, the action has triggered your rule again! Dear dios!

You can see where this would go: each update triggers the rule and causes the product to update yet again (by increasing its price), which again triggers the rule and so on. Fortunately, infinite loops are easy to avoid, you just have to put in an appropriate filter. Let's see an example:

You realize you've got an infinite loops on your hands. Your subscription is quickly running out because you're being charged for each action in the loop, so you quickly turn off the action (or rule) to keep the loop from continuing. Then you add the following condition to your action: "unless the max variant price is greater than: $42". Whew! Now your action will only execute until it's reached that $42 limit. Crisis avoided!

This is the sort of defensive configuration that you need to set up. If an infinite loops is possible, you'll be given a warning about it. Pay attention to that warning. As always, if you have any doubts about what your putting together, or if you need a walk-through on something, just send Aaron a note inside the app and we'll get it all sorted out.