I noticed people on InterNations are heavily focus on WhatsNewJakarta.com but I find it overly expat-y and sort of limited in their coverage on what to do in Jakarta. I recommend checking out other sources like below:
Protected content Follow their Instagram, where they post weekend events every Friday.
More yuppie/hipster focus o on new restaurants, bars, art events, local designers, etc.
Here's an example: Protected content
Protected content News & Listing of restaurants, but in Indonesian
Protected content Magazine covering news, night-life events in Jakarta