Enunciate
Adam cant hear you, speak up!
Job chaining in resque
Start the next after the first finishes or create a big wrapper job that does all of them
Inherited resource
Change objects before rendering — no good answer found
“I’m making an HTML5 web app that consumes a web service, and in development the browser is blocking cross-site requests from localhost. How can I just turn off this security while developing?”
Chrome has a command-line flag just for this occasion! –disable-xss-auditor
For everything else, change your hosts file to have the target site on localhost.
“Rails 3.1 seems to be slowing down my test suite to be about twice as slow. Seems to have something to do with garbage collection time. Thoughts?”
… no one had any definite answers.
“When using the wkhtmltopdf library via the PDFKit gem, if you use an HTML snippet that does not have a height defined, it generates a PDF that appears to only be an image, the text is not searchable or selectable. If you give your element a height however, it behaves as you would expect. Both PDF documents visually look the same though.”
Our team ran into an issue installing Ruby 1.9.3 on Lion today. When running…
$ rvm install ruby-1.9.3
… the installer fails with an error message including “checking whether the C compiler works… no” even though we had XCode and gcc installed.
After some reading on StackOverflow and Github I found this solution [1]…
$ rvm install 1.9.3-p0 --with-gcc=clang
… which points an explanation on RVM’s issue tracker [2].
See our full command line history and error messages below:
$ rvm install ruby-1.9.3-p0
Installing Ruby from source to: /Users/foobar/.rvm/rubies/ruby-1.9.3-p0, this may take a while depending on your cpu(s)...
ruby-1.9.3-p0 - #fetching
ruby-1.9.3-p0 - #extracted to /Users/foobar/.rvm/src/ruby-1.9.3-p0 (already extracted)
Fetching yaml-0.1.4.tar.gz to /Users/foobar/.rvm/archives
Extracting yaml-0.1.4.tar.gz to /Users/foobar/.rvm/src
Configuring yaml in /Users/foobar/.rvm/src/yaml-0.1.4.
Compiling yaml in /Users/foobar/.rvm/src/yaml-0.1.4.
Installing yaml to /Users/foobar/.rvm/usr
ruby-1.9.3-p0 - #configuring
ERROR: Error running ' ./configure -- prefix=/Users/foobar/.rvm/rubies/ruby-1.9.3-p0 --enable- shared --disable-install-doc --with-libyaml- dir=/Users/foobar/.rvm/usr ', please read /Users/foobar/.rvm/log/ruby-1.9.3-p0/configure.log
ERROR: There has been an error while running configure. Halting the installation.
$ cat /Users/foobar/.rvm/log/ruby-1.9.3-p0/configure.log
[2012-01-13 10:31:49] ./configure -- prefix=/Users/foobar/.rvm/rubies/ruby-1.9.3-p0 --enable-shared --disable-install-doc --with-libyaml- dir=/Users/foobar/.rvm/usr
configure: WARNING: unrecognized options: --with-libyaml-dir
checking build system type... x86_64-apple-darwin11.2.0
checking host system type... x86_64-apple-darwin11.2.0
checking target system type... x86_64-apple-darwin11.2.0
checking whether the C compiler works... no
configure: error: in `/Users/foobar/.rvm/src/ruby-1.9.3-p0':
configure: error: C compiler cannot create executables
See `config.log' for more details
“Trying to write a custom Rails I18n exception handler to catch MissingTranslationData exceptions”
The API didn’t seem to do what it claimed it should.
“RubyMine EAP undo behavior seems broken, it only wants to undo a file deletion, and then go back no farther in history.”
It was suggested that RubyMine undo is context sensitive, and having focus on the file browser has a different undo stack from the editor window.
“mysql2 gem on Lion is giving us an error: “Library not loaded… Image not found” and then a path pointing down into our RVM directory.”
Building the gem with options pointing to your mysql directory was suggested.
“git checkout -” will toggle you between your last two checkouts (branches or just plain SHA’s). Handy if you are switching back and forth. Can’t seem to find it mentioned anywhere in the docs though.
At Pivotal Labs, one of the services we provide our clients is helping them interview and hire. Pivotal Labs and our clients place a strong emphasis on Agile development and its many aspects: Pair Programming, Test-Driven Development, rapid iterations, and frequent refactoring.
Below is the job description for a Senior Ruby on Rails developer with whistlestop.com who are an internet start-up designing a fun new website at the nexus of social media and politics. The website will offer users new tools to engage in politics online, and if it works the way we think it will, it could have a game-changing effect on digital politics.
Whistlestop.com is hiring – here’s why you want to work there:
We are looking for an experienced, hands-on Ruby on Rails developer who will be comfortable working in a start-up environment, who can leverage Rails best practices, rapidly solve problems and bugs, proactively look for ways to make the product better, and who has a passion for developing innovative and scalable solutions to challenging problems. He or she will be the senior developer for our website, rounding out our technology and product team (along with our CTO and our lead designer).
The senior developer will have the opportunity to be part of a great team that is young, passionate, and has well-rounded experience in business, politics, and technology. We have a pretty decent amount of capital that we raised in a seed round and an ambitious vision for our website. We look forward to working closely with a senior developer who will feel as excited about our website as we are.
Competitive and based on the candidate’s experience and qualifications; will also include equity.
Interested candidates should submit a resume to Ryan Sullivan and should provide access to their Github profile.
Most load balancers have a heart beat monitor, that allows the load balancer to decide whether or not to send traffic to a given host.
For example:
http://server1.host.com/check.txt
If the load balancer gets a 200, it will send traffic to server1, if it gets a 404 or a timeout, it will not.
Today we were trying to figure out how to find what servers were up and running in the load balancer pool.
Here’s the capistrano task we came up with:
desc "Curls the check.txt file to see if the host is in the load balancer"
task :check_load_balancer do
roles[:web].map(&:host).each do |hostname|
value = %x{/usr/bin/curl -fs 'http://#{hostname}/check.txt'}
puts "Curling http://#{hostname}/check.txt: #{value}"
end
end
This gives you output like the following:
$ cap production deploy:check_load_balancer
* executing `production'
* executing `deploy:check_load_balancer'
Curling http://server2.dc1.domain.com/check.txt:
Curling http://server3.dc1.domain.com/check.txt: OK
Curling http://server4.dc1.domain.com/check.txt: OK
Curling http://server5.dc1.domain.com/check.txt:
Curling http://server6.dc1.domain.com/check.txt: OK
Curling http://server7.dc1.domain.com/check.txt: OK
Curling http://server8.dc1.domain.com/check.txt: OK
$
Now we can easily see there are issues with server 2 and 5.
At Pivotal Labs, 2011 was an amazing year. And we want you to help us make 2012 even better. We’re currently hiring for the following positions across our San Francisco, New York City, Boulder, Denver and Singapore campuses:
Want to know more? Click here for full job descriptions, and to apply.
At Pivotal Labs, one of the services we provide our clients is helping them interview and hire. Pivotal Labs and our clients place a strong emphasis on Agile development and its many aspects: Pair Programming, Test-Driven Development, rapid iterations, and frequent refactoring.
Below is the description for a Lead Ruby on Rails Developer position with Unpakt. Ever hired a mover? 37 million people move every year in the USA, but the process of finding a mover remains stressful and confusing. Unpakt is creating the Kayak of the moving industry, and they are looking for talented developers to join our team.
Unpakt is hiring – here’s why you want to work there:
Is a small team with solid financial backing, led by a highly successful entrepreneur. We are creating an intense but fun and respectful culture. Our compensation package includes competitive salary, equity participation, and help with any relocation expenses.
Email a copy of your resume, including the position you wish to apply for. Principals only please!