similar to: Books for Beginners

Hi, I am new to ROR. I have created a form with foru fields in ROR. Now its working fine for all CRUD operations. But I want to validate data on form for "validates_presence_of" validation. How to do this? I tried it by putting line "validates_presence_of :description" . But its not working. Its throws error like "undefined method `each'' for

I am having a problem trying to use RoR live. I have a Win XP SP1 OS, Apache 2.0.55, MySQL 5.0.15-nt ruby 1.8.2, rails 1.0.0, gem 0.8.10, WEBrick 1.3.1 Is it possible to run RoR using these components, live? Using an actual domain name like www.joe.com/rails/app? Instead of using localhost:3000? I would like to go live using either just Apache or Apache and WEBrick for RoR. I have an actual

Can anyone suggest some step-by-step tutorials for using CVS or Subversion on Sourceforge with OS X ? I''m a new to RoR and creating a Sourceforge project was recommended as a way of working and learning from/with others. But I can''t get over the hurdle of transferring what I''ve already build to csv.sourceforge or subversion.sourceforge. All my attempts generate

Hello All, I''ve been playing with Rails - did the recipe/category sample from onLamp.com - fairly straight forward - even got it working against postgres. Anyway, I''ve been appling rails to a small test project and I can''t seem to get the syntax down or find a sample of how to use the date control on a custom new/edit view. The CRUD (is that right?) that automatically

I have selected 4 software packages for us to evaluate in order to decide on the best possible engine for the much-requested cAos Community Wiki. All 4 samples are now up and running for you to try out, play around with, and evalute. The URL's are as follows: https://caos.nplus1.net/c-arbre/ https://caos.nplus1.net/dokuwiki/ https://caos.nplus1.net/pwp/ https://caos.nplus1.net/tikiwiki/

Hi, i m a web developer(php,ajax). i want to start with ruby on rails. can one suggest me online tutorials for ruby on rails? How would i start with ruby on rails,i knew something about ruby? editor for ruby on rails? Plase..... Thank You. -- Posted via http://www.ruby-forum.com/.

Hi, Does anyone have any links to, or info on, how best to leverage the power of a dynamic language. That is coming across from Java to Ruby I''m now pondering what would be the typical scenarios where I could actually call upon the power of a dynamic language. This info could be in the form of best practice for dynamic language usage, or dynamic language patters perhaps.

I'm trying to install R-1.6.2 on a Sparc machine running Solaris 5.9. I download and unpack R, run ./Configure from the R directory. Configure fails.The last line on the Configure script prints is 'Checking for Fortran 77 name-mangling scheme', This output and the config.log files are available at: http://www.phineas.pwp.blueyonder.co.uk/config.log and

On my previous message I gave incorrect URL's for the configuration output. They should be www.phineas.pwp.blueyonder.co.uk/config.log and www.phineas.pwp.blueyonder.co.uk/config.out Also this technique appears to work with Netscape on Solaris, but not IE on Windows. If this is not a sensible way to post diagnostic output let me know and I will post them in a different way. Phineas Campbell

I''m encountering a problem when trying to go through the Rails4Days tutorial: http://www.rails4days.pwp.blueyonder.co.uk/Rails4Days.pdf. As the guide suggests I have downloaded the version of rails that is being used in the tutorial with gem and have specified the versions in /config/environment.rb: # Include your application configuration below # Require Rails libraries. require

Dear R-users, I have a dataset with categories and numbers. I would like to compute and add cumulative numbers to the dataset. I do not understand the structure of by(...) or tapply(...) output enough to handle it. Here a small example -------------- d<-expand.grid(a=1:5,b=1:3,c=1:2) d$n = 10 * d$a + d$b +0.1* d$c Sn<-by(d$n,list(d$a,d$c),cumsum) str(Sn) --------- List of 10 $ : num

Hi there, I work at an internet radio station. My management thought it might be a good idea to enhance our radio with targeted ads. Do you know of any streaming server that is capable of inserting targeted ads into the stream? So far I have only found Ando Media's Targeted Ad Injector (http://andomedia.com/) which claims to be open source but I can't find the source anywhere. Regards,

I''ve been doing lots of research about different languages and frameworks for a project I''m planning. Your help in deciding what to do would be of great assistance. I used to program in highschool for a couple years. I haven''t done much since then and I know i''m pretty useless as a programmer. I know that if i put my head to it, I could muddle my way

I'm having trouble getting an IE client to hear mp3 streams through a flash player. It appears to be the same problem as described at http://icecast.imux.net/viewtopic.php?t=2039 - the flash player connects to the icecast server and begins downloading the audio data, but never actually plays it. I've tried all the suggestions from that thread - I patched icecast so that the Content-length

Hello I am trying to run Combine Z5 under wine (my version is 0.9.4) and have several probems has anyone succeeded in running this very useful program for macrophotography ? http://www.hadleyweb.pwp.blueyonder.co.uk/CZ5/combinez5.htm Thanks Fungi

Dear all, I've been reading for many days trying to predict with lmer but I haven't managed to do it. I've fitted an allometric model for trees where I have included climatic variables and diameter in the fixed part and in the random part I've included the experimental sites where trees are and also their provenance region. The model is like this :

hi there, im really new to linux and wine (about 2 days new now) and am having a few problems playing escape from monkey island everytime i load it up using the direct3D option i get a message saying unable to initialize hardware, if i open it using the openGL option it works but in a tiny screen. then i discovered the same result happens when i emulate a desktop using wine's configuration

Dear All, I am sorry for the post here but really apprecite if someone could help me or advise. actually i just could not subscribe to sendmail mailing list I have the following setup for a long time on a single computer Centos server running as my primary Mail & Dns server CentOS release 5 (Final) sendmail-8.13.8-2.el5 bind-9.3.4-6.0.3.P1.el5_2 MailScanner (4.76.25) Mailwatch 1.0.4 I had

I've downloaded gcc 2.95, and installed R-1.7.0 It appears to config properly, the config.out is at the following URL: http://www.phineas.pwp.blueyonder.co.uk/config.log Running make does not appear to work the errors are summarized: bash: ar: command not found *** Error code 127 make: Fatal error Command failed for target 'libappl.a' *** Error code 1 make: Fatal error: Command failed

Dear R-users, I have output files having a variable number of tables in the following format: ------------- 1 Pietje I1 I2 Value 1 1 0.11 1 2 0.12 2 1 0.21 2 Jantje I1 I2 I3 Value 1 1 1 0.111 3 3 3 0.333 ... ------------- Would there be an easy way of turning this into (a list of) data.frames with names Pietje, Jantje and variables I1,I2,...Value? (I1,I2 are string or categorical,