i will save you a lot of pain: just don't do it. the __escaped_fragment__ is the most idiotic recommendation google has ever given. basically you have to render two views, the user JS view and a server side rendered basic HTML __escaped_fragment__ view. oh yeah, the __escaped_fragment__ view will never be visited by your users and not by yourself - just by googlebot.
and now guess: what view will be less maintained, not up to date and regularly broken?
why? when there is no direct feedback, there is no direct feedback.
if you want to do SEO and as well go down the "but it's faster with JS" road just do "progressive enhancement" and history.pushState. the __escaped_fragment__ spec is a leftover from the ajaxy web2.0 times, and even then it was a bad idea.
and now guess: what view will be less maintained, not up to date and regularly broken?
why? when there is no direct feedback, there is no direct feedback.
if you want to do SEO and as well go down the "but it's faster with JS" road just do "progressive enhancement" and history.pushState. the __escaped_fragment__ spec is a leftover from the ajaxy web2.0 times, and even then it was a bad idea.