efrapp

Setup Sidekiq for Heroku

Install Heroku Redis Add-on

Option 1: Using the dashboard

Go to the Resources tab and in the Add-ons section type Heroku Redis in the search field. It will appear in the search list. Click on it and a modal will show up to install it, click in the Provision button to start the installation.

carlosramireziii

class AttachedValidator < ActiveModel::EachValidator
  def validate_each(record, attribute, value)
    record.errors.add(attribute, :attached, options) unless value.attached?
  end
end

tripflex

<?php
// ^ there should only be one of these at the top of your child theme's functions.php file

add_filter( 'job_manager_default_company_logo', 'smyles_custom_job_manager_logo' );

function smyles_custom_job_manager_logo( $logo_url ){

	// Change the value below to match the filename of the custom logo you want to use
	// Place the file in a /images/ directory in your child theme's root directory.
	// The example provided assumes "/images/custom_logo.png" exists in your child theme

cdesch

Cheat Sheets are greate but they are not a substitute for learning the framework and reading the documentation as we most certainly have not covered every potential example here. Please refer to the Rails Command Line Docs for more information.

Command Line Generator Info

Reference

You can get all of this information on the command line.

rails generate with no generator name will output a list of all available generators and some information about global options. rails generate GENERATOR --help will list the options that can be passed to the specified generator.

simonqian

module Base64ToFile
  extend ActiveSupport::Concern

  def base64_to_file(base64_data, filename=nil)
    return base64_data unless base64_data.is_a? String
    
    start_regex = /data:image\/[a-z]{3,4};base64,/
    filename ||= SecureRandom.hex

    regex_result = start_regex.match(base64_data)

msubel

=LOWER(CONCATENATE(DEC2HEX(RANDBETWEEN(0;POWER(16;8));8);"-";DEC2HEX(RANDBETWEEN(0;POWER(16;4));4);"-";"4";DEC2HEX(RANDBETWEEN(0;POWER(16;3));3);"-";DEC2HEX(RANDBETWEEN(8;11));DEC2HEX(RANDBETWEEN(0;POWER(16;3));3);"-";DEC2HEX(RANDBETWEEN(0;POWER(16;8));8);DEC2HEX(RANDBETWEEN(0;POWER(16;4));4)))

mlanett

HTTP status code symbols for Rails

Thanks to Cody Fauser for this list of HTTP responce codes and their Ruby on Rails symbol mappings.

Status Code Symbol
1xx Informational
100 :continue
101 :switching_protocols
102 :processing

justinweiss

# Call scopes directly from your URL params:
#
#     @products = Product.filter(params.slice(:status, :location, :starts_with))
module Filterable
  extend ActiveSupport::Concern

  module ClassMethods
    
    # Call the class methods with names based on the keys in <tt>filtering_params</tt>
    # with their associated values. For example, "{ status: 'delayed' }" would call 

remino

# Gemfile

gem 'kramdown'

Fivell

require 'nokogiri'
RSpec::Matchers.define :have_xml do |xpath, text|
  match do |body|
    doc = Nokogiri::XML::Document.parse(body)
    nodes = doc.xpath(xpath)
    nodes.empty?.should be_false
    if text
      nodes.each do |node|
        node.content.should == text
      end