Comments(1) I'm off to Cairo for some RGP training. Although, I'm not quite convinced with the language, but it is always nice to see how things perform. Besides… it's kind of a company training policy.
Comments(0) This is my impressions about Rails after rolling out an Issue Tracking system in 1 week (I might put it on tamersalama.com for a taste of what can be accomplised in 1 week).
I will be refining the lists as I continue my journey. At the end, I still like the power that Java provides and I consider Ruby on Rails to be a mind opener and another powerful tool. I intend to keep it in my belt.
Comments(0) Came across qooXdoo and I love it.
Hard to choose a favorite widget as they're all quite nice (Tree, Menu, Color Picker, Overlapping Window, Gallery, …).
It also seems that integrating them into apps is easy, so, I might give them a try sooner.
qooxdoo is an advanced open-source javascript based toolkit. qooxdoo continues where simple HTML is not enough anymore. This way qooxdoo can help you to get your rich web application interface done - easier than ever before.
Comments(0) The tables:
developer (...)
functional_system (…)
developers_function_systems (developer_id, functional_system_id)
I used “functional_system” instead of simply “system”, because it was giving me errors as it is one of Rails
href="http://wiki.rubyonrails.com/nails/show/ReservedWords" target="_blank">reserved words
Rails.
The models
class FunctionalSystem < ActiveRecord::Base
has_and_belongs_to_many :developers
end
class Developer < ActiveRecord::Base
has_and_belongs_to_many :functional_systems
end
The View (templates)
I included the checkboxes representing developers working on the same system:
...
<% Developer.find(:all).each do |developer| %>
<li><%= check_box_tag(”functional_system[developer_ids][]“, developer.id, @functional_system.developers.include?
(developer))%> <%= developer.name %></li>
<% end %>
..
The Controller
...
@functional_system = FunctionalSystem.new(params[:functional_system])
…
Rails has recognized the request parameters and magically filled out the @functional_system.developers collection.
A problem occurred when I wanted to include the join_date in the association information. That is the developers_functional_systems has an additional field of “join_date”. After trying out several scenarios - I finally came
across push_with_attributes.
Adding the following lines to the controller
@functional_system = FunctionalSystem.new(params[:functional_system])
#developers collection need to be cleared. Otherwise a “Duplicate Entry” error will be returned
@functional_system.developers.clear
params[:functional_system][:developer_ids].each do |dev_id|
@functional_system.developers.push_with_attributes(Developer.find(dev_id), {”join_date” => Date.today});
end
This performs what Rails has previously done automagically. It added a new developers_functional_systems's entry
(explicitly), with the additional association info of “join_date”.
As a more friendly approach, and to make use of Rails magic, It was better off adding the “join_date” in the view.
The naming convention is a bit tricky, after several trials, this have worked:
<ul>
<% Developer.find(:all).each do |developer| %>
<li><%= check_box_tag(”functional_system[developer_ids][]“, developer.id,
@functional_system.developers.include?(developer)) %><%= developer.name %></li>
<input type=”hidden” name=”developers[join_dates][]” value=”<%= Date.today %>”>
<% end %>
</ul>
I'm still not sure how the hash represented by name=”developers[join_dates][]” is recognized as belonging to the current
“functional_system”. Does anyone have a clue?
Comments(1) I'm on a new gig. Freemarker + Spring + JBoss jBPM + Hibernate + MySQL + ….
Sounds like a dangerous mix (nu-b in the first 4), but I'm up for the challenge. Wish me luck.
Any comments/suggestions? Anything on jBPM in particular? (seems fairly new, least mature, least documented among the mix).
I'll try to keep the blog up with the latest.
Comments(1) I'm on a new gig. Freemarker + Spring + JBoss jBPM + Hibernate + MySQL + ….
Sounds like a dangerous mix (nu-b in the first 4), but I'm up for the challenge. Wish me luck.
Any comments/suggestions? Anything on jBPM in particular? (seems fairly new, least mature, least documented among the mix).
I'll try to keep the blog up with the latest.
Comments(0) I added Recent Visitor Geographical Info to the list of sidebar links:
