I tweaked the project a bit. The project was built several years a go so there were couple things that I wanted to change.
Download new project template from here: https://s3.amazonaws.com/sc.neonto.com/example_projects/FireBaseRestaurantsReactStudioDemoNoConfig2021.rsproj.zip
The main thing that the project was missing was that Restaurant details screen did not have a data source set. Now the Data source is set to selectedRestaurant Data sheet which is updated every time user clicks restaurant item in the List/Grid. Basically there is an interaction which saves the restaurant’s Document key into Data slot. This Data slot is then used in the selectedRestaurant collection id to point to a selected restaurant’s document.
Please note that you need to have your own Firebase backend to run the project.
P.S. Here’s the Mobile preview link to my project: https://neonto.cloud/preview/4lgamrv7
The link will work after about a month from now