On Sun, Feb 22, 2009 at 4:30 AM, Frederick Cheung < [email protected]> wrote:
> > > > On Feb 22, 11:26 am, Adam Akhtar <[email protected]> > wrote: > > Im incorporating ajax / javascript stuff for the first time in my > > project and im a bit confused by all various methods available, rjs, > > prototype, javascript etc so please excuse me if this is an obvious > > question. > > > > Whilst looping though an array of model objects in my view I want to be > > able to show or hide a div that contains the message "Your list is > > empty". > > > > so something like this > > > > <% if items.empty?> > > #the following is not the correct way > > $('no-items-msg').show > > <% else > > > $('no-items-msg').hide > > <% items.each do |item|%> > > render :partial => "item_rows"...... > > <%end%> > > First off in javascript the () for function calls is mandatory - $('no- > items-msg').show just evaluates to a function object, you need $('no- > items-msg').show() to actually call it. secondly your javascript needs > to be inside <script> tags (there's a rails helper that will assist > with this, can't remember what it's called but it has javascript in > the name. > Fred, I believe you're referring to the javascript_tag Rails helper. > > Fred > > > > how do i add the prototype stuff correctly? > Adam, you'll need to add the following inside your HTML <head> tag: <%= javascript_include_tag :defaults %> Good luck, -Conrad --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
