Combine line and point feature classes attributes

[MathewSuran]

I have a line feature class and point feature class in a gdb that is hosted on our server. 

I want to utilize these in a webapp using the REST url. 

I want to ultimately be able to only display a line feature and be able to select it to display both line and point attributes. 

After doing some searching, I think I need to create a relationship class in the gdb. 

Can anyone lend some expertise on best way to accomplish this?

[MathewSuran]

By a simple mouse click at the location.

[williamcarr]

I've never tried to access any sort of click event in an info window or popup yet so I'm unsure of how to pull a feature attribute, but I'll give it a shot tomorrow to see if I can't figure something out.

[williamcarr]

Looks like I'm striking out. I'll post another thread in the JS forum and see if we can't Kelly and others to help us out. I'd really like to see a solution to this for personal reference.