| namespace :db do | |
| require 'sequel' | |
| namespace :migrate do | |
| Sequel.extension :migration | |
| task :connect do | |
| if ENV['DATABASE_URL'] | |
| DB = Sequel.connect(ENV['DATABASE_URL']) | |
| else | |
| puts 'ABORTING: You must set the DATABASE_URL environment variable!' |
| select fund_sums.total, fund_products.name | |
| from ( | |
| select sum(allocation_amount) total, fund_product_id | |
| from transactions | |
| where transactions.investor_id = 490 | |
| group by fund_product_id | |
| ) fund_sums | |
| left join fund_products on fund_sums.fund_product_id = fund_products.id |
| require 'aws-sdk' | |
| ACCESS_KEY_ID=ENV['AWS_KEY_ID'] | |
| SECRET_ACCESS_KEY=ENV['AWS_SEC_KEY'] | |
| CLUSTER_IDENTIFIER='test-instance' | |
| DB_NAME='testdb' | |
| PORT_NUMBER=5439 | |
| MASTER_USERNAME='test_admin' | |
| MASTER_USER_PASSWORD=ENV['MASTER_USER_PASSWORD'] |
| # Here's the script I'll use to demonstrate - it just loops forever: | |
| $ cat test.rb | |
| #!/usr/bin/env ruby | |
| loop do | |
| sleep 1 | |
| end | |
| # Now, I'll start the script in the background, and redirect stdout and stderr |
Our suite would sometimes randomly hang when running a certain spec, but we weren't able to tell which one. With the below RSpec around filter you can see the spec that is currently running by inspecting the process name.
$ rspec spec_spec.rb &
[2] 64968
$ ps | grep rspec
64968 ttys005 0:00.24 rspec /Users/miha/spec_spec.rb:10 "Dummy spec waits for 100 seconds"
| #!/usr/bin/env ruby | |
| if `git diff --cached spec` =~ /,\s?(:focus|focus:\s?true|:focus\s?=>\s?true)/ | |
| puts "\e[31mPlease focus and remove your :focus tags before committing :)" | |
| exit 1 | |
| end |
| Recently someone asked me for online resources about MRI's internal C source | |
| code. Here are a few - if there are more to add please leave a comment! - pat | |
| 1. Ruby Hacking Guide - The definitive resource for people who want to learn | |
| the C programming details of how Ruby works internally. Intended for C hackers. | |
| It was just recently translated into English from the original Japanese. | |
| http://ruby-hacking-guide.github.io | |
| 2. Various presentations by Koichi Sasada - he often does public presentations | |
| on Ruby internals and they're always fascinating and full of technical details. |
If, for some reason, you do not want to install PostgreSQL using Homebrew.
postgres user from terminal
| module Paperclip | |
| module CopyAttachments | |
| def copy_attachments_from(source_obj, source_bucket = nil, destination_bucket = nil) | |
| self.class.attachment_definitions.keys.each do |attachment_name| | |
| source_attachment = source_obj.send(attachment_name) | |
| next if source_attachment.blank? | |
| destination_attachment = self.send(attachment_name) | |
| connection = destination_attachment.send(:connection) |