Beats me where to send this...but somebody should fix it. I gave up and removed the dead link & added a pointer to the semi-useful RSS feed...that at least created correctly.
I was trying to update a wiki page, and the create simply said that the create validation failed with value 'false' Here's the wiki page... http://wiki.rubyonrails.org/rails/pages/HowtoWorkWithHelpers
And the edit which I inserted inbetween the 'see also' and the 'category': From the now dead link (apologies to Bruce for the raw copy): http://codefluency.com/2006/5/28/rails-views-helpers-that-take-blocks (found at Planet RubyOnRails – Working with a wealth of web servers and databases)
Rails Views: Block Helper Example
Posted by Bruce 644 days ago
A few articles back, I mentioned how useful helpers that take blocks can be within your views.
I thought I'd give a little example, giving a helper I find pretty useful in my own projects.
Here's the code, which I'll explain in a moment:
<pre><code> def link_to_section(name, html_opts={}, &block) section_id = name.underscore.gsub(/\s+/,'_') link_id = section_id + '_link' # Link concat(link_to_function(name,update_page{|page| page[section_id].show page[link_id].hide }, html_opts.update(:id=>link_id)), block.binding) # Hidden section concat(tag('div', {:id=>section_id, :style=>'display:none;'},true),block.binding) yield update_page{|page| page[section_id].hide page[link_id].show } concat('', block.binding) end </code></pre>
What this makes possible is stuff like:
<pre><code> <% link_to_section("View Details") do |closer| %> </code></pre>
Details
Some detailed text detailing detailed details.
<pre><code> <%= link_to_function("Hide Details",closer) %> <% end %> </code></pre>
What's going on here is actually pretty simple. The helper generates a link (with the label you've given) to show a a hidden div and hide itself. The block given to the helper is what will end up inside that div, and it's yielded the snippet of javascript necessary to switch back (so that you can use that snippet wherever you'd like).
Keep in mind assumes you'll only have one link per page with the same label ... if you think that won't be the case, you'll probably want ensure the ids generated inside the helper are unique; using object_id would be a simple way to do so.