Subselection by URL

rubyonrails-talk
1

Hey guys, I'm quite new in RoR, so please excuse me when I may ask weird questions.

I am working on a database frontend. The layout looks mostly like a has_many bs b has_many cs c has_many ds and so on. Now I want to do some selection. Maybe I want to see all ds belonging to a specific b. I would like to do it like: http://my.host/bs/1/ds When I click around there (add new ds, show a d or whatever), I would like to keep that b, so I always get like /bs/1/d/new and end up in /bs/1/ds again. Now comes the tricky part. I also want to have the same behavior for /as/1/ds and /cs/1/ds. When possible even for /as/1/cs/3/ds. I could do this by creating every route manually and touching every link, at least I know how to create the link for show (just [@b, d]), I would probably figure out how to create the other ones. But as I know RoR, there should be an easier way to do this. Surprisingly, I did not yet find one, so maybe you can give me hints how this could be done.

Thanks!

2

Jo Bu wrote in post #969496:

Hey guys, I'm quite new in RoR, so please excuse me when I may ask weird questions.

I am working on a database frontend. The layout looks mostly like a has_many bs b has_many cs c has_many ds and so on. Now I want to do some selection. Maybe I want to see all ds belonging to a specific b. I would like to do it like: http://my.host/bs/1/ds

You want nested resources. Read the routing docs.

Best,

3

Marnen Laibow-Koser wrote in post #969567:

You want nested resources. Read the routing docs.

Well yes, I could do that, but it would become very confusing. But I would more like a solution like (in pseudocode) if (URL matches "/a/:a_id/!(create|new|show|edit).*")        set @a=A.find_by_id(:a_id) Is that possible? And then I would have to rewrite link_to to prefix with the given values, right?

4

Have a look at https://github.com/jamesgolick/resource_controller It won't solve all your problems, but some.

5

Simon Baumgartner wrote in post #969774:

Have a look at GitHub - jamesgolick/resource_controller: Rails RESTful controller abstraction plugin.

That looks very helpful, thank you!