Question: I want to create two tables: supporters and tickets in database. In tickets table, I want to add id of supporters table as foreign key( supports\_id in tickets table). But I will not define as foreign key in migration. I read Eloquent relations at Laravel official site, it say 'Eloquent will automatically determine the proper foreign key column and suffix it with \_id' . So, I am right or wrong ?

Answer: 
I looked into this in some detail because I was dealing with a similar issue. 

The short version is, `slidify` is not longer really compatible with `shiny`, but the bulk of its functionality has been rolled-into `rmarkdown`, which is compatible with `shiny`. 

Ramnath's last comments about this with `slidify`, were that it would require very substantial changes to the code to make it work. That was 2015. `shiny` has changed substantially since then. So they're pretty out of sync. 

The bright side is that `rmarkdown` now incorporates the bulk of the `slidify` functionality. It supports the `ioslides` and `slidy` slide frameworks. (`ioslides` is very similar to `slidify`'s `io2012`). The functionality that hasn't been included, is support for multiple slide layouts using moustache. But that isn't too big a deal, because you can just write the html directly into your `rmarkdown` slides. Its also a lot easier to customize than it was with `slidify`. `shiny`, `htmlwidgets`, etc., all work transparently. If the visualization packages support it, its also very easy to switch between display in `shiny`, and packaging the presentation as a single `html5` document for distribution.
You might go through this examples here by Ramnath

<https://www.youtube.com/watch?v=I95GOmLc7TA>