# Top **URL:** https://www.ruby-forum.com/top.md?page=991 [Latest](https://www.ruby-forum.com/latest.md) · [Categories](https://www.ruby-forum.com/categories.md) · [Tags](https://www.ruby-forum.com/tags.md) **Page:** 992 --- ## [Country listbox from table](https://www.ruby-forum.com/t/country-listbox-from-table/110879)
**Author:** [@softf5ajivanet](https://www.ruby-forum.com/u/softf5ajivanet)\ **Replies:** 3\ **Last updated:** [July 31, 2007, 11:04pm UTC](https://www.ruby-forum.com/t/country-listbox-from-table/110879 "2007-07-31T23:04:43Z")
sorry again, i’m building a registration form, getting stumped on the country listbox. any ideas how i could build a listbox for countries, taking it’s content from a data table? i’d imagine i’d have to generate a d… --- ## [Unit testing rails model validation? - why bother? what's ra](https://www.ruby-forum.com/t/unit-testing-rails-model-validation-why-bother-whats-ra/106488)
**Author:** [@greg](https://www.ruby-forum.com/u/greg)\ **Replies:** 3\ **Last updated:** [June 12, 2007, 10:27am UTC](https://www.ruby-forum.com/t/unit-testing-rails-model-validation-why-bother-whats-ra/106488 "2007-06-12T10:27:06Z")
Hi all, Is there any need to write unit test cases for model validation when such validation is implemented by a single rails validate\_\* line in the model? e.g. “validates\_presence\_of :email”. Conservatively I woul… --- ## [Uninitialized constant Gtk::PageSetupUnixDialog (NameError)](https://www.ruby-forum.com/t/uninitialized-constant-gtk-pagesetupunixdialog-nameerror/77166)
**Author:** [@Dobai-Pataky\_BSSSSl](https://www.ruby-forum.com/u/Dobai-Pataky_BSSSSl)\ **Replies:** 3\ **Last updated:** [November 25, 2006, 10:24am UTC](https://www.ruby-forum.com/t/uninitialized-constant-gtk-pagesetupunixdialog-nameerror/77166 "2006-11-25T10:24:38Z")
Hi, @page\_setup\_dialog=Gtk::PageSetupUnixDialog.new() gives uninitialized constant Gtk::PageSetupUnixDialog (NameError) i suppose it should create a Gtk::PageSetupUnixDialog i just updated from cvs, and the issue st… --- ## [Flickr behavior](https://www.ruby-forum.com/t/flickr-behavior/63057)
**Author:** [@Roeland\_Moors](https://www.ruby-forum.com/u/Roeland_Moors)\ **Replies:** 3\ **Last updated:** [June 11, 2006, 8:14pm UTC](https://www.ruby-forum.com/t/flickr-behavior/63057 "2006-06-11T20:14:12Z")
I just tried RadiantCMS and I like it. I decided to make a flickr behavior but I need some ideas. There are 2 thing I need: a simple way to add a flickr thumb to a page for my blogging needs a gallery with one main p… --- ## [Q: how to undefined a class after declaration?](https://www.ruby-forum.com/t/q-how-to-undefined-a-class-after-declaration/58925)
**Author:** [@mikec](https://www.ruby-forum.com/u/mikec)\ **Replies:** 3\ **Last updated:** [April 27, 2006, 7:44am UTC](https://www.ruby-forum.com/t/q-how-to-undefined-a-class-after-declaration/58925 "2006-04-27T07:44:29Z")
E.g. using irb, I created class A and then class B, later I realized what I wanted was class B to be a subclass of A like ‘class B \< A’. irb would not allow that now that B exists. How do I undefined B so that I can c… --- ## [Script which deletes and comprisses logfiles](https://www.ruby-forum.com/t/script-which-deletes-and-comprisses-logfiles/245301)
**Author:** [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\ **Replies:** 1\ **Last updated:** [March 22, 2017, 2:32pm UTC](https://www.ruby-forum.com/t/script-which-deletes-and-comprisses-logfiles/245301 "2017-03-22T14:32:24Z")
Hello, together Since last month I work with Ruby. I realised that I leave in the work often log files which are older than 3 months. Now I want to delete them, however, a script would be more sensible there. Can s… --- ## [KeepAlive and Connection closed](https://www.ruby-forum.com/t/keepalive-and-connection-closed/230856)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 1\ **Last updated:** [July 8, 2014, 11:53pm UTC](https://www.ruby-forum.com/t/keepalive-and-connection-closed/230856 "2014-07-08T23:53:04Z")
Hello I am new to nginx. I will be taking the nginx training next week. In the meantime I was wondering if i was implementing the following properly. I have an nginx instance that is sitting between my server and a cl… --- ## [Cheetah - Not Found error during GNU Radio installation on Fedora 20](https://www.ruby-forum.com/t/cheetah-not-found-error-during-gnu-radio-installation-on-fedora-20/240478)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 1\ **Last updated:** [April 16, 2014, 5:57pm UTC](https://www.ruby-forum.com/t/cheetah-not-found-error-during-gnu-radio-installation-on-fedora-20/240478 "2014-04-16T17:57:17Z")
I am trying to install GNU Radio on Fedora 20. I get Cheetah not found error, even when the installed cheetah version is more than what is required (currently cheetah version is 2.4.4 on my PC). Initially I tried ins… --- ## [Geo Module. How to make nginx to check proxy for any ip?](https://www.ruby-forum.com/t/geo-module-how-to-make-nginx-to-check-proxy-for-any-ip/227432)
**Author:** [@varan](https://www.ruby-forum.com/u/varan)\ **Replies:** 1\ **Last updated:** [March 15, 2013, 11:03am UTC](https://www.ruby-forum.com/t/geo-module-how-to-make-nginx-to-check-proxy-for-any-ip/227432 "2013-03-15T11:03:17Z")
I mean I haven’t got full list of ip addresses that can be proxy, so I want nginx to look X-FORWARDED-FOR header for any ip address, and if the header exists to determine geo using the header. If there’s no X-Forward… --- ## [Transaction not working with update\_attributes!](https://www.ruby-forum.com/t/transaction-not-working-with-update-attributes/146917)
**Author:** [@jjburka](https://www.ruby-forum.com/u/jjburka)\ **Replies:** 1\ **Last updated:** [August 26, 2008, 10:31pm UTC](https://www.ruby-forum.com/t/transaction-not-working-with-update-attributes/146917 "2008-08-26T22:31:52Z")
I am trying to wrap the updating of two models in a transaction and when the transaction fails it is not rolling back. My method is : def update\_attributes(user,params) @user = user @company = user.company begin U… --- ## [Internationalization options](https://www.ruby-forum.com/t/internationalization-options/119071)
**Author:** [@cremes](https://www.ruby-forum.com/u/cremes)\ **Replies:** 1\ **Last updated:** [November 5, 2007, 10:21am UTC](https://www.ruby-forum.com/t/internationalization-options/119071 "2007-11-05T10:21:08Z")
Hi, I’m new to ruby and rails. I need support for for localized pages, pages with multilingual content, international date/time formats, and calendar and time zone calculations. Initially, I asked someone on the ICU … --- ## [FXRuby: updating a text label/positioning question](https://www.ruby-forum.com/t/fxruby-updating-a-text-label-positioning-question/62487)
**Author:** [@unknown](https://www.ruby-forum.com/u/unknown)\ **Replies:** 1\ **Last updated:** [June 5, 2006, 5:28pm UTC](https://www.ruby-forum.com/t/fxruby-updating-a-text-label-positioning-question/62487 "2006-06-05T17:28:54Z")
Dear all, in a GUI, I want to display some text from inside a text file in a text field. When starting the application, it looks roughly like this ################ filelist window ################ contents of file: … --- ## [Ruby-ldap crashing WEBrick server](https://www.ruby-forum.com/t/ruby-ldap-crashing-webrick-server/58376)
**Author:** [@sithadmin](https://www.ruby-forum.com/u/sithadmin)\ **Replies:** 1\ **Last updated:** [April 21, 2006, 1:33am UTC](https://www.ruby-forum.com/t/ruby-ldap-crashing-webrick-server/58376 "2006-04-21T01:33:49Z")
We are trying to use Ruby-ldap 0.9.4 with Ruby 1.84 on Rails 1.1.2. All is running on top of Solaris 2.8. The overall setup works fine for doing other things like access an Oracle DB, and displaying items. When it com… --- ## [How to specify a complex number in block: vector\_source?](https://www.ruby-forum.com/t/how-to-specify-a-complex-number-in-block-vector-source/239027)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 5\ **Last updated:** [February 8, 2014, 10:40am UTC](https://www.ruby-forum.com/t/how-to-specify-a-complex-number-in-block-vector-source/239027 "2014-02-08T10:40:20Z")
Dear Sir, I am using the built-in block of Vector Source, configured as below: Output Type = Complex. Vector = ( 1, 2, 3 ) Then I run the flow graph. The block sends out 1 + 0i, 2 + 0i, 3 + 0i. Question: How to … --- ## [\[Backport 200 - Backport #8064\]\[Assigned\] r39687 - io.c (rb update max fd): use ATOMIC CAS のバックポート](https://www.ruby-forum.com/t/backport-200-backport-8064-assigned-r39687-io-c-rb-update-max-fd-use-atomic-cas/227284)
**Author:** [@kosaki\_SMotohiro\_KO](https://www.ruby-forum.com/u/kosaki_SMotohiro_KO)\ **Replies:** 5\ **Last updated:** [April 26, 2013, 7:10pm UTC](https://www.ruby-forum.com/t/backport-200-backport-8064-assigned-r39687-io-c-rb-update-max-fd-use-atomic-cas/227284 "2013-04-26T19:10:11Z")
Issue #8064 has been reported by kosaki (Motohiro KOSAKI). Backport #8064: r39687 - io.c (rb\_update\_max\_fd): use ATOMIC\_CAS のバックポート Author: kosaki (Motohiro KOSAKI) Status: Assigned Priority: Normal Assignee: naga… --- ## [%w{ fred.gif fred.jpg fred.png FRED.JPG FRED.Jpg http://a.b.c/x/y/z/fred.gif }](https://www.ruby-forum.com/t/w-fred-gif-fred-jpg-fred-png-fred-jpg-fred-jpg-http-a-b-c-x-y-z-fred-gif/215468)
**Author:** [@dubstep](https://www.ruby-forum.com/u/dubstep)\ **Replies:** 5\ **Last updated:** [January 11, 2012, 7:26pm UTC](https://www.ruby-forum.com/t/w-fred-gif-fred-jpg-fred-png-fred-jpg-fred-jpg-http-a-b-c-x-y-z-fred-gif/215468 "2012-01-11T19:26:15Z")
Mi spiegate dettagliatamente il significato di questa espressione? in particolare cosa si intende con la dicitura: %w{} ? Grazie! --- ## [How to navigate between view using select](https://www.ruby-forum.com/t/how-to-navigate-between-view-using-select/210847)
**Author:** [@dubstep](https://www.ruby-forum.com/u/dubstep)\ **Replies:** 5\ **Last updated:** [August 19, 2011, 8:28pm UTC](https://www.ruby-forum.com/t/how-to-navigate-between-view-using-select/210847 "2011-08-19T20:28:34Z")
Hi, im new to rails and I got a mind boggling issue. I have a select form populated with Institutes names e.g University of Yale. These records are obtained from the Institute ActiveRecord.The institutes table has a m… --- ## [Script/server (Error)](https://www.ruby-forum.com/t/script-server-error/205664)
**Author:** [@dubstep](https://www.ruby-forum.com/u/dubstep)\ **Replies:** 5\ **Last updated:** [April 14, 2011, 8:48am UTC](https://www.ruby-forum.com/t/script-server-error/205664 "2011-04-14T08:48:45Z")
i did cd blog script/server and got follwoing message . =\> Booting WEBrick =\> Rails 2.3.8 application starting on http://0.0.0.0:3000 /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active\_record/connection\_adapt… --- ## [A rails plugin to generate css sprite image automatically](https://www.ruby-forum.com/t/a-rails-plugin-to-generate-css-sprite-image-automatically/176402)
**Author:** [@flyerhzm](https://www.ruby-forum.com/u/flyerhzm)\ **Replies:** 5\ **Last updated:** [March 3, 2011, 4:05pm UTC](https://www.ruby-forum.com/t/a-rails-plugin-to-generate-css-sprite-image-automatically/176402 "2011-03-03T16:05:35Z")
Hi guys, I have written a rails plugin/gem to generate css sprite image automatically. The project repository is here: GitHub - flyerhzm/css\_sprite: automatically css sprite It is based on RMagick and you need only d… --- ## [My OpenSSL server crashes](https://www.ruby-forum.com/t/my-openssl-server-crashes/203583)
**Author:** [@luislavena](https://www.ruby-forum.com/u/luislavena)\ **Replies:** 5\ **Last updated:** [February 25, 2011, 10:54pm UTC](https://www.ruby-forum.com/t/my-openssl-server-crashes/203583 "2011-02-25T22:54:42Z")
I have an openssl server in my company which we use to upload data to in order to store it in a database. There’s also some client server communication possible for different reasons. Somehow, the openssl server somet… --- ## [Do Rails/gems updates break applications?](https://www.ruby-forum.com/t/do-rails-gems-updates-break-applications/188094)
**Author:** [@enos76](https://www.ruby-forum.com/u/enos76)\ **Replies:** 5\ **Last updated:** [May 5, 2010, 5:45pm UTC](https://www.ruby-forum.com/t/do-rails-gems-updates-break-applications/188094 "2010-05-05T17:45:07Z")
Some time ago I started experimenting with Ruby on Rails. I stopped almost immediately, because after updating gems or Rails itself, I often ended up with non-working applications. I was not the only one with such pro… --- ## [Fixnum problem](https://www.ruby-forum.com/t/fixnum-problem/184738)
**Author:** [@manish\_belsare](https://www.ruby-forum.com/u/manish_belsare)\ **Replies:** 5\ **Last updated:** [March 7, 2010, 8:52pm UTC](https://www.ruby-forum.com/t/fixnum-problem/184738 "2010-03-07T20:52:12Z")
Sir can i know what is the meaning of the phrase ‘comparison of Fixnum with nil failed’ I want to pass two parameters to a method in a model file… bt wen i pass an integer then it gives the above error… Please help… --- ## [\[Q\] in too deep?](https://www.ruby-forum.com/t/q-in-too-deep/181617)
**Author:** [@Kevin\_SSLim](https://www.ruby-forum.com/u/Kevin_SSLim)\ **Replies:** 5\ **Last updated:** [January 15, 2010, 3:39am UTC](https://www.ruby-forum.com/t/q-in-too-deep/181617 "2010-01-15T03:39:09Z")
Here is how my objects are instantiated. (jruby -\> rails -\> java -\> scripting engine (jruby) -\> ruby) Rails get started with ‘jruby -S script/server -e production’ Rails initializer has a java object creation. The ja… --- ## [Why require doesnt work](https://www.ruby-forum.com/t/why-require-doesnt-work/178302)
**Author:** [@midose](https://www.ruby-forum.com/u/midose)\ **Replies:** 5\ **Last updated:** [November 2, 2009, 3:26pm UTC](https://www.ruby-forum.com/t/why-require-doesnt-work/178302 "2009-11-02T15:26:09Z")
I have JRuby 1.8.6 that work on windows xp and my IDE is netbeans 6.7. require’s method doesnt work when I want work with Win32API or Qt. the code is: require “Win32API” message = “This is a sample Windows message bo… --- ## [RESTful routing, in-place editing, and creating new resource obj - design question](https://www.ruby-forum.com/t/restful-routing-in-place-editing-and-creating-new-resource-obj-design-question/174046)
**Author:** [@lunaclaire](https://www.ruby-forum.com/u/lunaclaire)\ **Replies:** 5\ **Last updated:** [August 24, 2009, 11:33pm UTC](https://www.ruby-forum.com/t/restful-routing-in-place-editing-and-creating-new-resource-obj-design-question/174046 "2009-08-24T23:33:48Z")
I’m working on adding in-place editing of one of my RESTful resources and I need advice on how to make a change to the design patterns we all know and love for the creation/editing of a new resource object. Out of the… --- ## [I cannt able to save the data.?](https://www.ruby-forum.com/t/i-cannt-able-to-save-the-data/162264)
**Author:** [@haneef5k](https://www.ruby-forum.com/u/haneef5k)\ **Replies:** 5\ **Last updated:** [March 7, 2009, 7:39pm UTC](https://www.ruby-forum.com/t/i-cannt-able-to-save-the-data/162264 "2009-03-07T19:39:36Z")
ActiveRecord::StatementInvalid in PublicController#create Mysql::Error: Unknown column ‘albums.artist’ in ‘where clause’: SELECT FROM albums WHERE (albums.artist IS NULL) LIMIT 1 --- ## [Passenger](https://www.ruby-forum.com/t/passenger/161503)
**Author:** [@msan](https://www.ruby-forum.com/u/msan)\ **Replies:** 5\ **Last updated:** [February 28, 2009, 10:38pm UTC](https://www.ruby-forum.com/t/passenger/161503 "2009-02-28T22:38:36Z")
Qualcuno lo usa? Lo trovo molto interessante, ho anche trovato bell’e’ pronto il pacchetto deb. Ho configurato il tutto e sembra funzionare nel senso che connettendomi al virtual host configurato per l’applicazione r… --- ## [Remote browser screen capture with Rials?](https://www.ruby-forum.com/t/remote-browser-screen-capture-with-rials/158038)
**Author:** [@Schalk\_N](https://www.ruby-forum.com/u/Schalk_N)\ **Replies:** 5\ **Last updated:** [January 18, 2009, 10:06pm UTC](https://www.ruby-forum.com/t/remote-browser-screen-capture-with-rials/158038 "2009-01-18T22:06:46Z")
Hi everyone, Does anyone know of a solution that will work with Rails that can capture remote screen shots of website a.k.a Magnolia, DZone etc? Thanks, Schalk --- ## [\[Bug:1.9\] removing Exception#initialize dumps core](https://www.ruby-forum.com/t/bug-1-9-removing-exception-initialize-dumps-core/152068)
**Author:** [@Yusuke\_ENDOH](https://www.ruby-forum.com/u/Yusuke_ENDOH)\ **Replies:** 5\ **Last updated:** [November 27, 2008, 4:06am UTC](https://www.ruby-forum.com/t/bug-1-9-removing-exception-initialize-dumps-core/152068 "2008-11-27T04:06:45Z")
e$B1sF#$G$9!#e(B e$B0J2\<$Ge(B SEGV e$B$7$^$9$,!";EMM$G$7$g$&$+!#e(B $ ./ruby -e ‘class Exception; remove\_method(:initialize); end; raise’ -e:1: warning: removing \`initialize’ may cause serious problem e$B%;%0%a%s%F!\<%… --- ## [How can my model reference a helper?](https://www.ruby-forum.com/t/how-can-my-model-reference-a-helper/128199)
**Author:** [@carpeliam](https://www.ruby-forum.com/u/carpeliam)\ **Replies:** 5\ **Last updated:** [February 5, 2008, 9:09pm UTC](https://www.ruby-forum.com/t/how-can-my-model-reference-a-helper/128199 "2008-02-05T21:09:40Z")
I know, I know, they’re not allowed to. But here’s my problem. I’ve got a really simple model with two fields, name and price, which I want to show in a form select drop-down. “collection\_select” takes a ‘text\_method’… --- ## [Rails + Apache 2.2.3](https://www.ruby-forum.com/t/rails-apache-2-2-3/117530)
**Author:** [@turnkeytraders](https://www.ruby-forum.com/u/turnkeytraders)\ **Replies:** 5\ **Last updated:** [October 18, 2007, 1:48pm UTC](https://www.ruby-forum.com/t/rails-apache-2-2-3/117530 "2007-10-18T13:48:17Z")
Hello, I have a server with multiple domains and it runs Apache 2.2.3 with Rails 1.2.5, Ruby 1.8.5 Now, on 1 domain, I have a subdomain and on this subdomain, I want to run a rails app. Now I don’t use Mongrel or anyt… --- ## [Running linux command from inside](https://www.ruby-forum.com/t/running-linux-command-from-inside/109124)
**Author:** [@rorjeff](https://www.ruby-forum.com/u/rorjeff)\ **Replies:** 5\ **Last updated:** [July 11, 2007, 6:29pm UTC](https://www.ruby-forum.com/t/running-linux-command-from-inside/109124 "2007-07-11T18:29:21Z")
I’ve ran a search in ruby-talk but I couldn’t find an answer so… Can I run a linux command inside a ruby program. Like history =\> 63 history history -d63 Thanks Jeff B. --- ## [Core Dev: Page Controller and Page Editor refactorings](https://www.ruby-forum.com/t/core-dev-page-controller-and-page-editor-refactorings/105920)
**Author:** [@igotimac](https://www.ruby-forum.com/u/igotimac)\ **Replies:** 5\ **Last updated:** [June 4, 2007, 7:16pm UTC](https://www.ruby-forum.com/t/core-dev-page-controller-and-page-editor-refactorings/105920 "2007-06-04T19:16:13Z")
Hi, I’ve started to do some refactoring/improvment of the strucutre of page, page\_controller, and page\_parts. And I plan on continuing in a similar vein with admin/page/edit.rhtml The goal of this particular iterati… --- ## [Goldberg 0.1.4 released](https://www.ruby-forum.com/t/goldberg-0-1-4-released/74732)
**Author:** [@urbanus](https://www.ruby-forum.com/u/urbanus)\ **Replies:** 5\ **Last updated:** [November 13, 2006, 2:53am UTC](https://www.ruby-forum.com/t/goldberg-0-1-4-released/74732 "2006-11-13T02:53:45Z")
This release adds support for ActiveRecord migrations, so in theory Goldberg should now run on any database that Rails supports. Some Rake tasks have also been added, to make installing and upgrading easier. See “Inst… --- ## [Formating @content\_for\_layout](https://www.ruby-forum.com/t/formating-content-for-layout/68457)
**Author:** [@Toph](https://www.ruby-forum.com/u/Toph)\ **Replies:** 5\ **Last updated:** [April 14, 2006, 10:25am UTC](https://www.ruby-forum.com/t/formating-content-for-layout/68457 "2006-04-14T10:25:37Z")
Hi all, I sent a message earlier, so forgive me if you have already read this (I got some cryptic message in German about how my e-mail was not read?). Anyway, I was just wondering if there was any way to format the h… --- ## [Error message](https://www.ruby-forum.com/t/error-message/244698)
**Author:** [@Rafa\_F](https://www.ruby-forum.com/u/Rafa_F)\ **Replies:** 4\ **Last updated:** [May 31, 2016, 5:04am UTC](https://www.ruby-forum.com/t/error-message/244698 "2016-05-31T05:04:57Z")
I’m a beginner of Ruby at the age of 70s. Please help. I was trying to execute a very elementary example below taken from the standard textbook called “tanoshii Ruby” , but I couldn’t and got an error message “uninit… --- ## [Displaying records with static look up table source](https://www.ruby-forum.com/t/displaying-records-with-static-look-up-table-source/241984)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 4\ **Last updated:** [May 19, 2015, 9:00pm UTC](https://www.ruby-forum.com/t/displaying-records-with-static-look-up-table-source/241984 "2015-05-19T21:00:22Z")
Greetings All, I hope you all understand what I am writing here. Lots of views involve displaying date from static ‘look up’ tables: states, countries, type… From all of the documentation I have read, the standard co… --- ## [Assert All lines](https://www.ruby-forum.com/t/assert-all-lines/222730)
**Author:** [@aris](https://www.ruby-forum.com/u/aris)\ **Replies:** 4\ **Last updated:** [October 30, 2012, 4:32pm UTC](https://www.ruby-forum.com/t/assert-all-lines/222730 "2012-10-30T16:32:31Z")
Hi, I’m trying to create a method to assert all lines and if any of them fail then the whole block will fail require ‘test/unit’ def assert\_all(message="assert\_block failed.") # :yields: \_wrap\_assertion do … --- ## [Benchmark\_xx.py Transmits Images at +/- 0.5MHz When Center Freq Is 2.4GHz \[USRP N200 and XCVR2450\]](https://www.ruby-forum.com/t/benchmark-xx-py-transmits-images-at-0-5mhz-when-center-freq-is-2-4ghz-usrp-n200-and-xcvr2450/219441)
**Author:** [@Gurdipe\_D](https://www.ruby-forum.com/u/Gurdipe_D)\ **Replies:** 4\ **Last updated:** [May 3, 2012, 10:09pm UTC](https://www.ruby-forum.com/t/benchmark-xx-py-transmits-images-at-0-5mhz-when-center-freq-is-2-4ghz-usrp-n200-and-xcvr2450/219441 "2012-05-03T22:09:27Z")
Hi All, I have a pair of USRP N200s with XCVR2450 daughterboards running the latest GNU Radio version with UHD. This is an odd problem, but I’m wondering if anyone has seen this before. When I run the benchmark\_rx.p… --- ## [How to retrieve a FileBlob from 'ActionDispatch::Http::UploadedFile' instance?](https://www.ruby-forum.com/t/how-to-retrieve-a-fileblob-from-actiondispatch-uploadedfile-instance/217529)
**Author:** [@dubstep](https://www.ruby-forum.com/u/dubstep)\ **Replies:** 4\ **Last updated:** [March 4, 2012, 6:35pm UTC](https://www.ruby-forum.com/t/how-to-retrieve-a-fileblob-from-actiondispatch-uploadedfile-instance/217529 "2012-03-04T18:35:08Z")
I have used ‘remotipart’ gem to upload files asynchronously to server side. The instance passed to the server side is of ‘UploadedFile’ . The Rails API mentions all the methods( like read(), open() ) and attributes f… --- ## [Ruby script for creating TLS certificates](https://www.ruby-forum.com/t/ruby-script-for-creating-tls-certificates/213721)
**Author:** [@luislavena](https://www.ruby-forum.com/u/luislavena)\ **Replies:** 4\ **Last updated:** [November 10, 2011, 12:01am UTC](https://www.ruby-forum.com/t/ruby-script-for-creating-tls-certificates/213721 "2011-11-10T00:01:04Z")
Hi, I’ve coded a Ruby script that creates autosigned TLS certificates (with advanced features such as SubjectAltName fields for “DNS” and “URI:sip” values). It’s inspired in a tool within Vines project \[\*\] and availab… --- ## [Re: GrBlock](https://www.ruby-forum.com/t/re-grblock/213352)
**Author:** [@luislavena](https://www.ruby-forum.com/u/luislavena)\ **Replies:** 4\ **Last updated:** [November 4, 2011, 9:23pm UTC](https://www.ruby-forum.com/t/re-grblock/213352 "2011-11-04T21:23:14Z")
I hope you guys are doing well. I have a compilation problem with GrBlock. I have GNURadio 3.3 and UHD installed in a non standard directory (/opt/gnuradio) and (/opt/uhd). Please help me with this questions. Can I in… --- ## [Gnuradio-next -- GRC FFT -- OpenGL Persistence Crash](https://www.ruby-forum.com/t/gnuradio-next-grc-fft-opengl-persistence-crash/213060)
**Author:** [@luislavena](https://www.ruby-forum.com/u/luislavena)\ **Replies:** 4\ **Last updated:** [October 21, 2011, 11:15pm UTC](https://www.ruby-forum.com/t/gnuradio-next-grc-fft-opengl-persistence-crash/213060 "2011-10-21T23:15:14Z")
Hey all - I’m using gnuradio-next (testing CMake and such). If I use the OpenGL FFT in GRC, and click the “Persistence” checkbox, the flowgraph crashes and spits this out: File “/usr/lib/python2.7/site-packages/Ope… --- ## [USRP N200, RFX 1800 not receiving signal](https://www.ruby-forum.com/t/usrp-n200-rfx-1800-not-receiving-signal/211053)
**Author:** [@luislavena](https://www.ruby-forum.com/u/luislavena)\ **Replies:** 4\ **Last updated:** [August 25, 2011, 11:31am UTC](https://www.ruby-forum.com/t/usrp-n200-rfx-1800-not-receiving-signal/211053 "2011-08-25T11:31:00Z")
Hi, My USRP N200 / RFX 1800 combination seems to not receive any useful signal. The software seems to work, there are no error messages, and the USRP seems to sample noise but does not even show a signal from a signal … --- ## [GRC FFT Block Question](https://www.ruby-forum.com/t/grc-fft-block-question/206835)
**Author:** [@luislavena](https://www.ruby-forum.com/u/luislavena)\ **Replies:** 4\ **Last updated:** [June 2, 2011, 1:46pm UTC](https://www.ruby-forum.com/t/grc-fft-block-question/206835 "2011-06-02T13:46:38Z")
Hi List, I am trying to find the spectrum symmetry of a modulated signal. That’s why i use the fft block on GRC. (The flow i used is attached).I use AM modulation as an example. And i write a block that finds the lef… --- ## [Help : Using another Hardware in gnuradio](https://www.ruby-forum.com/t/help-using-another-hardware-in-gnuradio/205817)
**Author:** [@luislavena](https://www.ruby-forum.com/u/luislavena)\ **Replies:** 4\ **Last updated:** [April 17, 2011, 7:51pm UTC](https://www.ruby-forum.com/t/help-using-another-hardware-in-gnuradio/205817 "2011-04-17T19:51:55Z")
Hi everyone , I think this is true that gnuradio is a general purpose signal processing framework , not only for USRP. Now i have a question regarding this , suppose i have a hardware in which the hardware drivers a… --- ## [Mysql issue with rails 3 and Ruby 1.9.2](https://www.ruby-forum.com/t/mysql-issue-with-rails-3-and-ruby-1-9-2/202481)
**Author:** [@luislavena](https://www.ruby-forum.com/u/luislavena)\ **Replies:** 4\ **Last updated:** [February 1, 2011, 6:06pm UTC](https://www.ruby-forum.com/t/mysql-issue-with-rails-3-and-ruby-1-9-2/202481 "2011-02-01T18:06:27Z")
Hello, I am trying to install rails and ruby with latest version. Every thing is ok, but mysql is not not working. I followed all the google links. the whole day is failed. any idea… When I try to use dbconsole, I am… --- ## [Rails 3 + Tomcat Issues](https://www.ruby-forum.com/t/rails-3-tomcat-issues/194624)
**Author:** [@baq](https://www.ruby-forum.com/u/baq)\ **Replies:** 4\ **Last updated:** [September 8, 2010, 7:19pm UTC](https://www.ruby-forum.com/t/rails-3-tomcat-issues/194624 "2010-09-08T19:19:01Z")
Hi all, I’m using Warble to deploy the barebones Rails 3 app to a Tomcat container (it’s the app you get by default when creating a Rails 3 app using the command line). The homepage loads just fine, but when I click … --- ## [RCov with jruby-complete possible?](https://www.ruby-forum.com/t/rcov-with-jruby-complete-possible/191308)
**Author:** [@crucoba](https://www.ruby-forum.com/u/crucoba)\ **Replies:** 4\ **Last updated:** [July 13, 2010, 12:25pm UTC](https://www.ruby-forum.com/t/rcov-with-jruby-complete-possible/191308 "2010-07-13T12:25:03Z")
I’m trying to use RCov in my Rakefile for code coverage with Rspec in the ruby code our App, but because of our special needs in the app (mix code of Java, Ruby and Scala) we’re executing it with jruby-complete (1.5.1… --- ## [String Manipulation Problems (decoding hex)](https://www.ruby-forum.com/t/string-manipulation-problems-decoding-hex/182438)
**Author:** [@oreoshake](https://www.ruby-forum.com/u/oreoshake)\ **Replies:** 4\ **Last updated:** [January 28, 2010, 7:17pm UTC](https://www.ruby-forum.com/t/string-manipulation-problems-decoding-hex/182438 "2010-01-28T19:17:09Z")
First, I’m a java guy. I have a file that contains hex (e.g. 890dfbcb…) and I’m trying to pass that to an OpenSSL::Cipher object as the key/iv. For the sake of the question, I’m going to cut the key down in size In … [Previous page](https://www.ruby-forum.com/top.md?page=990&per_page=50) [Next page](https://www.ruby-forum.com/top.md?page=992&per_page=50)