# Latest **URL:** https://www.ruby-forum.com/latest.md?page=522 [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:** 523 --- ## [ActiveRecord, Squeel: Getting objects without parent associations](https://www.ruby-forum.com/t/activerecord-squeel-getting-objects-without-parent-associations/236920)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 0\ **Last updated:** [October 11, 2013, 6:49am UTC](https://www.ruby-forum.com/t/activerecord-squeel-getting-objects-without-parent-associations/236920 "2013-10-11T06:49:12Z")
I have: class ThingsCollection \< ActiveRecord::Base has\_and\_belongs\_to\_many :things, uniq: true end class Thing \< ActiveRecord::Base has\_and\_belongs\_to\_many :things\_collections, uniq: true end I want to get Things… --- ## [\[ANN\] Invoker 1.0 release with runtime agnostic .dev local domain support and process supervisor](https://www.ruby-forum.com/t/ann-invoker-1-0-release-with-runtime-agnostic-dev-local-domain-support-and-process-supervisor/236919)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 0\ **Last updated:** [October 11, 2013, 5:57am UTC](https://www.ruby-forum.com/t/ann-invoker-1-0-release-with-runtime-agnostic-dev-local-domain-support-and-process-supervisor/236919 "2013-10-11T05:57:30Z")
Hello folks, I am happy to release version 1.0 of Invoker. Invoker is a utility belt for managing processes in development environment. Use it for managing multiple processes with ease. Use it for developing web app… --- ## [Logging header values from the first upstream](https://www.ruby-forum.com/t/logging-header-values-from-the-first-upstream/236915)
**Author:** [@alcina](https://www.ruby-forum.com/u/alcina)\ **Replies:** 2\ **Last updated:** [October 11, 2013, 5:33am UTC](https://www.ruby-forum.com/t/logging-header-values-from-the-first-upstream/236915 "2013-10-11T05:33:37Z")
The HttpUpstreamModule states that variable values for $upstream\_http\_$HEADER are only valid for the last upstream accessed during a request. I’d like to know if there’s a workaround. Specifically, I’m setting (and t… --- ## [How can i make a web crawler in ruby](https://www.ruby-forum.com/t/how-can-i-make-a-web-crawler-in-ruby/246394)
**Author:** [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\ **Replies:** 1\ **Last updated:** [October 11, 2013, 4:46am UTC](https://www.ruby-forum.com/t/how-can-i-make-a-web-crawler-in-ruby/246394 "2013-10-11T04:46:12Z")
i need step by step procedure/guidance to understand as entry-level-developer. fill my blanks…, Selvag --- ## [Webcrawler in ruby](https://www.ruby-forum.com/t/webcrawler-in-ruby/246375)
**Author:** [@Rafa\_F](https://www.ruby-forum.com/u/Rafa_F)\ **Replies:** 1\ **Last updated:** [October 11, 2013, 4:45am UTC](https://www.ruby-forum.com/t/webcrawler-in-ruby/246375 "2013-10-11T04:45:02Z")
i got succeed in “gem install anemone” then what’s my next step to build a Web crawler. --- ## [(no subject)](https://www.ruby-forum.com/t/no-subject/236912)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 0\ **Last updated:** [October 11, 2013, 3:31am UTC](https://www.ruby-forum.com/t/no-subject/236912 "2013-10-11T03:31:25Z")
Hello everyone, Now I understand why most of the people get confused with the previous topic I’m talking about. By radio I mean tactical radio for communication, use in military communication. So my Question is, Is i… --- ## [How to tell Nginx not to decode URL for proxy\_pass?](https://www.ruby-forum.com/t/how-to-tell-nginx-not-to-decode-url-for-proxy-pass/236916)
**Author:** [@alcina](https://www.ruby-forum.com/u/alcina)\ **Replies:** 0\ **Last updated:** [October 11, 2013, 3:24am UTC](https://www.ruby-forum.com/t/how-to-tell-nginx-not-to-decode-url-for-proxy-pass/236916 "2013-10-11T03:24:24Z")
Hi, I need to pass a certain URI namespace to an upstream servers, while taking away the prefix. Consider following configuration: location ^~ /going-to-upstream/ { access\_log off; rewrite /upstream(/.\*) $1 b… --- ## [Rmagick: animated gif resize returns corrupted](https://www.ruby-forum.com/t/rmagick-animated-gif-resize-returns-corrupted/99414)
**Author:** [@iseng](https://www.ruby-forum.com/u/iseng)\ **Replies:** 1\ **Last updated:** [October 10, 2013, 10:58pm UTC](https://www.ruby-forum.com/t/rmagick-animated-gif-resize-returns-corrupted/99414 "2013-10-10T22:58:52Z")
Hopefully this is the the right place to ask. I’m sorry if not. I’m trying to create a thumbnail (100x100). It works on most images. But on some animated gif files it return corrupted thumbnail images. Here’s my ruby… --- ## [Best way to approach reading and parsing a large XLSX file?](https://www.ruby-forum.com/t/best-way-to-approach-reading-and-parsing-a-large-xlsx-file/246431)
**Author:** [@Rafa\_F](https://www.ruby-forum.com/u/Rafa_F)\ **Replies:** 0\ **Last updated:** [October 10, 2013, 10:48pm UTC](https://www.ruby-forum.com/t/best-way-to-approach-reading-and-parsing-a-large-xlsx-file/246431 "2013-10-10T22:48:35Z")
Hello, I’m developing an app that basically, receives a 10MB or less XLSX files with +30000 rows or so, and another XLSX file with about 200rows, I have to read one row of the smallest file, look it up on the largest … --- ## [Singleton classes](https://www.ruby-forum.com/t/singleton-classes/236911)
**Author:** [@alcina](https://www.ruby-forum.com/u/alcina)\ **Replies:** 0\ **Last updated:** [October 10, 2013, 9:24pm UTC](https://www.ruby-forum.com/t/singleton-classes/236911 "2013-10-10T21:24:26Z")
What is the simplest explanation, for the use and purpose of the singleton classes. --- ## [Vinayak Mithbaokar is on a vacation](https://www.ruby-forum.com/t/vinayak-mithbaokar-is-on-a-vacation/236909)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 0\ **Last updated:** [October 10, 2013, 8:42pm UTC](https://www.ruby-forum.com/t/vinayak-mithbaokar-is-on-a-vacation/236909 "2013-10-10T20:42:21Z")
I will be out of the office starting October 11, 2013 and return on October 14, 2013. You may contact Mr. Sanjay Yeole for any urgent official work. --- ## [How to create a debuggable Ruby interpreter](https://www.ruby-forum.com/t/how-to-create-a-debuggable-ruby-interpreter/236907)
**Author:** [@alcina](https://www.ruby-forum.com/u/alcina)\ **Replies:** 0\ **Last updated:** [October 10, 2013, 8:38pm UTC](https://www.ruby-forum.com/t/how-to-create-a-debuggable-ruby-interpreter/236907 "2013-10-10T20:38:48Z")
I am trying to build a debuggable version of the Ruby interpreter on RedHat Linux. The configure script for Python has a --with-pydebug option which allows this. Is there an equivalent option for Ruby? If not, how do … --- ## [Question over the Silder in GRC](https://www.ruby-forum.com/t/question-over-the-silder-in-grc/246384)
**Author:** [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\ **Replies:** 4\ **Last updated:** [October 10, 2013, 6:43pm UTC](https://www.ruby-forum.com/t/question-over-the-silder-in-grc/246384 "2013-10-10T18:43:43Z")
Hi all, I am using USRP N210 and GRC. I have a question over changing a USRP parameter using a slider in GRC. If I want to change the TX frequency from 2GHz to 4GHz using a slider, as we know, during this process, t… --- ## [Installing libxml on windows](https://www.ruby-forum.com/t/installing-libxml-on-windows/246387)
**Author:** [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\ **Replies:** 0\ **Last updated:** [October 10, 2013, 6:26pm UTC](https://www.ruby-forum.com/t/installing-libxml-on-windows/246387 "2013-10-10T18:26:11Z")
Hi, I am trying to install libxml on windows ruby from gem file \[1\], and though install output suggests install was successful with “1 gem installed”, in the build.log it says "rake aborted! No Rakefile found (looki… --- ## [Abstract/hide username/password in ruby script](https://www.ruby-forum.com/t/abstract-hide-username-password-in-ruby-script/236904)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 5\ **Last updated:** [October 10, 2013, 6:24pm UTC](https://www.ruby-forum.com/t/abstract-hide-username-password-in-ruby-script/236904 "2013-10-10T18:24:25Z")
I have a script that will be talking to Windows. Based on what we are doing, it looks like I need to hard code a windows domain service account into a ruby script so it can communicate with the destination windows se… --- ## [Tuning the Java to Ruby method name translator](https://www.ruby-forum.com/t/tuning-the-java-to-ruby-method-name-translator/236867)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 5\ **Last updated:** [October 10, 2013, 5:51pm UTC](https://www.ruby-forum.com/t/tuning-the-java-to-ruby-method-name-translator/236867 "2013-10-10T17:51:06Z")
Is there any way to tune the translator that turns Java-formatted method names into Ruby-formatted method names? I’m using JAXB-generated classes for an XML schema to create Ruby bindings and am encountering cases whe… --- ## [Difference between Kernel#caller and Kernel#caller\_locations](https://www.ruby-forum.com/t/difference-between-kernel-caller-and-kernel-caller-locations/235983)
**Author:** [@alcina](https://www.ruby-forum.com/u/alcina)\ **Replies:** 6\ **Last updated:** [October 10, 2013, 5:44pm UTC](https://www.ruby-forum.com/t/difference-between-kernel-caller-and-kernel-caller-locations/235983 "2013-10-10T17:44:02Z")
Hi, I am bit confused with the methods Kernel#caller(Module: Kernel (Ruby 2.0.0)) and Kernel#caller\_locations(Module: Kernel (Ruby 2.0.0)). Are there any differences between these 2 methods? Thanks --- ## [Getting forward secrecy enabled](https://www.ruby-forum.com/t/getting-forward-secrecy-enabled/236772)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 16\ **Last updated:** [October 10, 2013, 5:42pm UTC](https://www.ruby-forum.com/t/getting-forward-secrecy-enabled/236772 "2013-10-10T17:42:54Z")
On ssllabs.com I am getting the following, even though I am using all the recommend settings. http://i.imgur.com/TlsKMzP.png Here are my nginx settings: ssl\_prefer\_server\_ciphers on; ssl\_protocols SSLv3 TLSv1 TLSv1… --- ## [Bug in freq\_xlating\_fir\_filter\_XXX](https://www.ruby-forum.com/t/bug-in-freq-xlating-fir-filter-xxx/236877)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 9\ **Last updated:** [October 10, 2013, 5:24pm UTC](https://www.ruby-forum.com/t/bug-in-freq-xlating-fir-filter-xxx/236877 "2013-10-10T17:24:46Z")
I was playing around with fir\_filter\_XXX and freq\_xlating\_fir\_filter\_XXX and noticed that the two do not give the same output for the same input (and center\_freq=0 in the xlating filter). Looking at the implementat… --- ## [Summary of embedded working group at GRCON13](https://www.ruby-forum.com/t/summary-of-embedded-working-group-at-grcon13/236903)
**Author:** [@alcina](https://www.ruby-forum.com/u/alcina)\ **Replies:** 6\ **Last updated:** [October 10, 2013, 5:21pm UTC](https://www.ruby-forum.com/t/summary-of-embedded-working-group-at-grcon13/236903 "2013-10-10T17:21:15Z")
I’ve taken the notes we made on the board and put them on the wiki at: http://gnuradio.org/redmine/projects/gnuradio/wiki/GRCon13Embedded Please add you name to the attendee list and edit as needed. The next question … --- ## [Post Message to facebook friends timeline](https://www.ruby-forum.com/t/post-message-to-facebook-friends-timeline/246373)
**Author:** [@Rafa\_F](https://www.ruby-forum.com/u/Rafa_F)\ **Replies:** 0\ **Last updated:** [October 10, 2013, 4:29pm UTC](https://www.ruby-forum.com/t/post-message-to-facebook-friends-timeline/246373 "2013-10-10T16:29:49Z")
Hi friends. i have my facebook friends profile id in my friends page. now i want post message to particular user. how is possible. reply me. --- ## [Google calendar](https://www.ruby-forum.com/t/google-calendar/246398)
**Author:** [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\ **Replies:** 2\ **Last updated:** [October 10, 2013, 4:24pm UTC](https://www.ruby-forum.com/t/google-calendar/246398 "2013-10-10T16:24:33Z")
Hi friends, How to work my application events to store in google calendar. Is this possible. any good links are available to do this. thanks for advance… --- ## [Class in array](https://www.ruby-forum.com/t/class-in-array/236884)
**Author:** [@alcina](https://www.ruby-forum.com/u/alcina)\ **Replies:** 19\ **Last updated:** [October 10, 2013, 1:54pm UTC](https://www.ruby-forum.com/t/class-in-array/236884 "2013-10-10T13:54:21Z")
Hi all! First of all. I’m new to Ruby. I am working on a program in school - find the highest grade for X amount of students. I’ve made this code: class Person def initialize(name, grade) @name = name @grade =… --- ## [Unicorn as simple cgi without rails](https://www.ruby-forum.com/t/unicorn-as-simple-cgi-without-rails/236900)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 2\ **Last updated:** [October 10, 2013, 1:43pm UTC](https://www.ruby-forum.com/t/unicorn-as-simple-cgi-without-rails/236900 "2013-10-10T13:43:14Z")
hello, i recently set up a new server upon which i installed nginx to try it out (and which i have been quite happy with since). my website is mostly static with some small cgi areas, and i like to use ruby for the c… --- ## [Error in installation of gqrx](https://www.ruby-forum.com/t/error-in-installation-of-gqrx/236887)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 3\ **Last updated:** [October 10, 2013, 12:38pm UTC](https://www.ruby-forum.com/t/error-in-installation-of-gqrx/236887 "2013-10-10T12:38:56Z")
Hello all, I tried to install gqrx using PyBOMBS. I have GNU Radio 3.7 installed using PyBOMBS. \*manu@radio1:bin$ ./gnuradio-config-info -v 3.7.2git-0-gd19aa281 Then I did \*manu@radio1:pybombs$ ./pybombs insta… --- ## [Radio interoperability](https://www.ruby-forum.com/t/radio-interoperability/246418)
**Author:** [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\ **Replies:** 4\ **Last updated:** [October 10, 2013, 12:06pm UTC](https://www.ruby-forum.com/t/radio-interoperability/246418 "2013-10-10T12:06:48Z")
Hello every one, I’m working on a college level project to show interoperability between HF and VHF radio using GNU radio. My aims are listed below: To obtain FM transmitter and receiver waveform in GNU radio as … --- ## [Need for explanation of blocks in gnuradio](https://www.ruby-forum.com/t/need-for-explanation-of-blocks-in-gnuradio/246417)
**Author:** [@Rafa\_F](https://www.ruby-forum.com/u/Rafa_F)\ **Replies:** 2\ **Last updated:** [October 10, 2013, 11:52am UTC](https://www.ruby-forum.com/t/need-for-explanation-of-blocks-in-gnuradio/246417 "2013-10-10T11:52:46Z")
Hi everyone, Can anybody explain me what are the functions of frequency xlating block and wbfm receive pll block.I searched lot of web pages but couldn’t find any proper documentation on it. Thanks in advance … --- ## [\[ruby-trunk - Bug #8492\]\[Assigned\] ObjectSpace.after\_gc\_start\_hook aborts with GC.stress](https://www.ruby-forum.com/t/ruby-trunk-bug-8492-assigned-objectspace-after-gc-start-hook-aborts-with-gc-stress/245465)
**Author:** [@Rafa\_F](https://www.ruby-forum.com/u/Rafa_F)\ **Replies:** 2\ **Last updated:** [October 10, 2013, 11:07am UTC](https://www.ruby-forum.com/t/ruby-trunk-bug-8492-assigned-objectspace-after-gc-start-hook-aborts-with-gc-stress/245465 "2013-10-10T11:07:46Z")
Issue #8492 has been reported by naruse (Yui NARUSE). Bug #8492: ObjectSpace.after\_gc\_start\_hook aborts with GC.stress Author: naruse (Yui NARUSE) Status: Assigned Priority: Normal Assignee: ko1 (Koichi Sasada) C… --- ## [Look ahead condition](https://www.ruby-forum.com/t/look-ahead-condition/236891)
**Author:** [@alcina](https://www.ruby-forum.com/u/alcina)\ **Replies:** 5\ **Last updated:** [October 10, 2013, 10:56am UTC](https://www.ruby-forum.com/t/look-ahead-condition/236891 "2013-10-10T10:56:04Z")
Hi, may be the heading of the post is not right but i dont know how to explain this. basically. suppose you have an array which has value like this Check Fault Check : Check Chassis fault : Check email : DISK WAR… --- ## [FIL1 on WBX gdb](https://www.ruby-forum.com/t/fil1-on-wbx-gdb/246395)
**Author:** [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\ **Replies:** 1\ **Last updated:** [October 10, 2013, 10:44am UTC](https://www.ruby-forum.com/t/fil1-on-wbx-gdb/246395 "2013-10-10T10:44:58Z")
Hi, i cannot find the value of the FIL1 component on the gdb from the WBX (v2). Could you give me the partnumber or specifications? Gr. Simon [Previous page](https://www.ruby-forum.com/latest.md?page=521) [Next page](https://www.ruby-forum.com/latest.md?page=523)