Jim Sidler jvsidler

jvsidler / active_validator.rb

Created August 10, 2011 16:18

Ruby on Rails: Custom Validator

	class ActiveValidator < ActiveModel::EachValidator
	def validate_each(record, attribute, value)
	# If the relationship exists and the related object is active
	unless eval("record.#{attribute.to_s.gsub("_id", "")}") && eval("record.#{attribute.to_s.gsub("_id", "")}").active
	record.errors.add(attribute, "must be an active #{attribute.to_s.gsub("_id", "")}") unless eval("record.#{attribute}.blank?")
	end
	end
	end

jvsidler / ranges.rb

Created August 19, 2011 20:38

Technical interview answer

	if ARGV.empty?
	puts "\nPlease enter any two SEQUENTIAL random numbers separated by one space. i.e 16 21\n"
	a, b = gets.strip.split(" ")
	else
	a, b = ARGV[0], ARGV[1]
	end

	if a.to_i > 0 && b.to_i == 0
	puts "Please give two numbers."
	exit

jvsidler / gist:4610255

Created January 23, 2013 17:14

List all crontabs for all users on UNIX systems. Must be root. Credit: http://stackoverflow.com/questions/134906/how-do-i-list-all-cron-jobs-for-all-users

for user in $(cut -f1 -d: /etc/passwd); do echo $user; crontab -u $user -l; done

jvsidler / gist:7548312

Created November 19, 2013 16:38

Handy one liner to recover contents of unintentionally cleared stashes. Recover work after 'git stash clear'.

	git fsck --unreachable \| grep commit \| cut -d\ -f3 \| xargs git show

	git stash apply <commit sha-1>