I keep trying rails because I love Ruby so much but I've never been able to build anything in it because I find it's so heavily skewed towards an old-fashioned

I keep trying rails because I love Ruby so much but I've never been able to build anything in it because I find it's so heavily skewed towards an old-fashioned "traditional" stack and I tend to build SPAs with an API. Rails can certainly do that, but its tutorials and guides don't promote it at all so it feels like you're going against the flow from the start trying to do something that they don't seem to want you to do. I wish that wasn't the case, because the language is beautiful and the framework seems quite cool. I always just end up using express instead...