Ruby on Rails problems & solutions - Apr 12, 2011

April 12, 2011

Why does my remote form only work the first time?

Protip - don’t do this: $(‘#some_div input’).val(“”);

in your Javascsript response to a remote form in Rails.  You’ll spend entirely too much time wondering why the form only works once, then you get routing errors. (Hint: it clears the hidden :method field.  D’Oh!)

Protip for Github/Capistrano users

Ok, you deploy n00bs - really, really, read the stuff on Github about using Capistrano.

And, even if you don’t understand what it does, use this option in your deploy.rb:

default_run_options[:pty] = true  #Must be set for the password prompt from git to work!!!!!

Emphasis ! added. I went round-and-round with our sysadmin/deploy guy for far too long, before discovering he didn’t add this line, because he didn’t understand what it did.  

Image Maps I’ve used other people’s image maps before, but I never built one from scratch myself.  Look out for these Firefox gotchas: