similar to: rjb: Java classes in Rails

I MAY be able to derive something out of the present example given here : http://blog.codeinmotion.com/index.php/2006/12/22/pdf-generation-in-ruby-on-rails/ but this deals with filling out forms. Is there a simpler example that just allows you to talk to itext , send it some plain text and get back a pdf and then send that pdf to the user as downloadable / renderable data? -- Posted via

I want to create an internal admin view to display the output of "show variables" from mysql. What''s the best approach do this? For example, I''m doing something like this: @variables = ActiveRecord::Base.find_by_sql "show variables;" Then, I get stuff like this back (227 elements in @variables) in script/console: >> @variables[0] =>

I''m trying to interact with a java library (Aspose Slides) inside of my Rails 3 app. I''m trying to get the rjb gem installed but I keep running into the same error when I try to start the app: [BUG] cross-thread violation on rb_gc() (null) Abort trap I''m on OSX 10.6.6, running ruby 1.8.7-p174 (via RVM) and Rails 3.0.4. I tried a couple of methods for getting this

I have the need to take existing PDFs and populate them with data entered via HTML forms. Data saved to database, entered in to PDF file, PDF file with data archived, and then distributed va email and/ or download. The languuage I previous did all my web work in, Lasso, had this stuff built in, but it appears not to be so with Ruby or Rails. The latest info I can find on this is a year

Greetings. I am trying to list all keys in a java.util.HashMap field. The Java code to do this looks like: # Collection c = hMap.values(); # # //obtain an Iterator for Collection # Iterator itr = c.iterator(); # # //iterate through HashMap values iterator # while(itr.hasNext()) System.out.println(itr.next()); So, I took a stab at the ruby version: # I have a java hashmap called fields

Hello, I''m having some problems when try to install rjb i get this message C:\Users\PC1090\Documents\RJB\rjb-1.3.8>ruby setup.rb config ---> bin <--- bin ---> lib <--- lib ---> ext C:/Ruby187/Ruby1.8.7/bin/ruby "C:/Users/PC1090/Documents/RJB/rjb-1.3.8/ext/extconf.rb" checking for jni.h... no *** C:/Users/PC1090/Documents/RJB/rjb-1.3.8/ext/extconf.rb failed

Heya all -- I recently downloaded the RJB 1.1.1 gem, and the install seemed to go fine. However, when I try to require ''rjb'' I get the following error: no such file to load -- rjb Has anyone seen this before? Any thoughts what it could be? Thanks so much! -Lucas -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ You received this

It seems that using a join model that joins with two has_many''s will fail to generate proper SQL class StudentSemesterRecord < ActiveRecord::Base belongs_to :semester has_many :discipline_records, :through => :semester end class Semester < ActiveRecord::Base has_many :student_semester_records has_many :discipline_records end class DisciplineRecord <

How do you run an ad-hoc query that does not belong in any model? I thought it was something like ActiveRecord::connection.find("my query..."), but I can''t seem to find the documentation on it. I know I''ve seen it somewhere before, though. thanks, Jeff -- Posted via http://www.ruby-forum.com/.

Hi I''ve got the error in the log file "marshal data too short" after I try to store some data into session. After doing some research on the internet, it looks like the problem was caused by pstore.rb. It is there way to solve this problem? Thank you -- Posted via http://www.ruby-forum.com/.

I am trying to do file i/o with rails and rjb and can''t figure out a way to make this work. Here''s what I am trying to do: - a user uploads an image to the server via a standard html form: <%= file_field("blog", "attach") %> - this returns a ruby File object to the controller in params[:blog][:attach]

Hello, I am running in to an error trying to run mongrel. The server starts but then trying to access any url in my application throws this error: calling Dispatcher.dispatch uninitialized constant RailsHandler::Dispatcher ./script/../config/../vendor/rails/activesupport/lib/active_support/dependencies.rb:477:in `const_missing''

Help! On my Mac dev machine, everything works, and obviously on my Debian production server something is wrong. I set JAVA_HOME and LD_LIBRARY_PATH in environment.rb, but it''s still blocked. Anyone has experience with rjb? -- Posted via http://www.ruby-forum.com/.

Folks, I'm a bit puzzled by the fact that if I generate 100,000 standard normal variates using rnorm() and perform the Jarque-Bera on the resulting vector, I get p-values that vary drastically from run to run. Is this expected? Surely the p-val should be close to 1 for each test? Are 100,000 variates sufficient for this test? Or is it that rnorm() is not a robust random number generator?

All, I am attempting to use RJB (Java-Ruby Bridge - see: http://arton.no-ip.info/collabo/backyard/?RubyJavaBridge) in my Rails app. The documentation says: "Both LD_LIBRARY_PATH and JAVA_HOME setting required in environment.rb file of RoR." However, it doesn''t say _how_ to set these variables in environment.rb. I''ve tried JAVA_HOME =

One of my models has a column that is updated very frequently from a separate process, so it is important that when a record is saved in rails, this column should be left alone. In the update method of the controller I have: @record = MyModel.find(params[:id]) @record.update_attributes(params[:my_model]) params[:my_model] doesn''t have a reference to the column I''m talking

Hello happy Railers, I used to develop with a local out-of-the-box Apache and load times were pretty slow (like a few seconds each page). "Well, it''s the price to pay for no compile / cache / etc..." I thought. Nonsense. Yesterday I installed SCGI, and now I''ve got the best of both worlds: rails development env uses my very latest modifications, while SCGI ensures I

I am trying to do file i/o with rails and rjb and can''t figure out a way to make this work. Here''s what I am trying to do: - a user uploads an image to the server via a standard html form: <%= file_field("blog", "attach") %> - this returns a ruby File object to the controller in params[:blog][:attach] - then I need to convert this into a Java

In production I''ve setup a mongrel cluster of 2 servers. Now I''m using RJB(ruby java bridge). So I need certain java environment variables set before mongrel starts. So I set them: export LD_LIBRARY_PATH=/usr/java/jdk1.6.0/jre/lib/i386/:/usr/java/jdk1.6.0/jre/lib/i386/client/:./ export JAVA_HOME=/usr/java/jdk1.6.0/ Then I run "mongrel_rails cluster::start". Now

Hello all! I have two views (list_1 and list_2) that show a list of users in two different ways. In the views for these actions there is a link to edit a specific user properties (edit_user). That works fine, except that when I change the user I want to go back to the view that originated the request and not to the default list (list_1). Can anyone help me? Best regards, Hugo -- Posted via