Is it possible to call a before_filter from another? The reason I ask is because I have two similar before_filters, but one has an extra condition that could still let it be true. So, if the first before_filter is true than the second one is true as well, but if the first is false another condition is checked and then decided if it's true or false.
It is correct that filters are just methods, so to answer your question:
Yes, it is possible to call filters from other filter.
BUT beware that you should not render or redirect twice, otherwise you will receive a AbstractController::DoubleRenderError. Thus if one of the filters is rendering you should not call the other filter.
Use boolean return values to manage this.