i have a few quick questions about RoR...

1. does it support linked selects?

2. how difficult is it to incorporate javascript slider form elements?

3. how is form display order determined? i use postgresql and i have difficulty manipulating column order when i have to make change - ie, the last column added is ordered last every time.

4. does the table id have to be named "id" or can i name it "tablename_id"?

tia. RoR looks pretty interesting.