Juri Kern jurikern

jurikern / Resque error description

Created May 10, 2012 20:36

Resque and resque-scheduler bug on production environment

	PG::Error: ERROR: prepared statement "a3" already exists :

	SELECT COUNT(*) FROM pg_class c LEFT JOIN pg_namespace n ON n.on = c.rel namespace WHERE c.relkind in ('v','r') AND c.relname = $1 AND n.nsp name = ANY (current_schema(false))

jurikern / Rails & Redis

Created July 9, 2012 11:52

Redis integration with Rails

http://jimneath.org/2011/03/24/using-redis-with-ruby-on-rails.html

jurikern / Twitter Boostrap with Rails Engine

Created July 20, 2012 12:08

	Add to file [engine_path]/application.css
	//= require twitter/bootstrap

	$(document).ready(function(){
	/* Your javascripts goes here... */
	});

	Add to file [engine_path]/application.css
	/*
	*= require bootstrap_and_overrides

jurikern / Correct devise ORM configuration

Created July 20, 2012 12:10

	# ==> ORM configuration in file devise.rb
	require 'devise/orm/active_record'

	# ==> Application configuration in application.rb
	config.generators do \|g\|
	g.orm :active_record
	end

jurikern / Yaml load way

Created July 26, 2012 08:32

@file = YAML.load_file("#{Rails.root.join('path/to/folder', 'file.yml')}")

jurikern / gist:3434316

Created August 23, 2012 08:36

Dropdown list validation on rails > 3.2

	class Person
	validates :gender_id, :presence => true, :inclusion => { :in => proc { \|req\| req.gender_types.map{ \|key, value\| key } } } #req - self 'Person' object
	validates :title_id, :presence => true, :inclusion => { :in => proc { \|req\| req.title_types.map{ \|key, value\| key } } }
	end

jurikern / gist:3435077

Created August 23, 2012 10:07

Validation using :if or :unless conditions

	class EmploymentInformation < ActiveRecord::Base
	attr_accessible :employment_status_id, :company_name, :university

	validates :employment_status_id, :presence => true, :inclusion => { :in => proc { \|req\| req.employment_status_types.map{ \|key, value\| key } } }
	validates :company_name, :presence => true, :format => { :with => /\A[A-z\s\-\._]+\z/ }, :unless => proc { \|req\| req.employment_status.nil? }
	validates :university, :presence => true, :format => { :with => /\A[A-z\s\-\._]+\z/ }, :unless => proc { \|req\| req.employment_status.nil? }

	end

jurikern / gist:3664983

Created September 7, 2012 10:31

Regex brilliant collection

/^([0-9]{3}([0-9]{3})?|[0-9]{4})$/ -> 111. 1111, 111111

jurikern / chef_solo_init

Created September 12, 2012 21:03

	#!/usr/bin/env bash
	apt-get -y update
	apt-get -y install build-essential zlib1g-dev libssl-dev libreadline-gplv2-dev lib64readline-gplv2-dev libyaml-dev
	cd /tmp
	wget ftp://ftp.ruby-lang.org/pub/ruby/1.9/ruby-1.9.3-p194.tar.gz
	tar -xvzf ruby-1.9.3-p194.tar.gz
	cd ruby-1.9.3-p194/
	./configure --prefix=/usr/local
	make
	make install

jurikern / gist:3953143

Created October 25, 2012 15:03

undefined method `_prefixes' for TemplatesBuilder:Class

	actionpack (3.2.8) lib/action_view/base.rb:209:in `initialize'
	app/builders/templates_builder.rb:3:in `new'
	app/builders/templates_builder.rb:3:in `process'
	app/controllers/templates_controller.rb:6:in `create'
	actionpack (3.2.8) lib/action_controller/metal/implicit_render.rb:4:in `send_action'
	actionpack (3.2.8) lib/abstract_controller/base.rb:167:in `process_action'
	actionpack (3.2.8) lib/action_controller/metal/rendering.rb:10:in `process_action'
	actionpack (3.2.8) lib/abstract_controller/callbacks.rb:18:in `block in process_action'
	activesupport (3.2.8) lib/active_support/callbacks.rb:436:in `_run__2734696839539265386__process_action__2538432014012520187__callbacks'
	activesupport (3.2.8) lib/active_support/callbacks.rb:405:in `__run_callback'