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##################
#     Mongoid    #
##################
 
League.org_id(1)
#=> #<Mongoid::Criteria
#  selector: {:org=>{"$in"=>[1]}},
#  options:  {},
#  class:    League,
#  embedded: false>

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# Tried on Rails 3.2.{11,12} so far
class Venue < ActiveRecord::Base
  scope :org_id, ->(ids) { where org_id: Array(ids) }
end

Venue.org_id(1).org_id(2)
# => Venue Load (0.3ms)  SELECT `venues`.* FROM `venues` WHERE `venues`.`org_id` IN (2)

Venue.where(org_id: [1]).where(org_id: [2])
# => Venue Load (0.5ms)  SELECT `venues`.* FROM `venues` WHERE `venues`.`org_id` IN (1) AND `venues`.`org_id` IN (2)

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#!/usr/bin/env zsh

test_loc="./test/**/$1_test.rb"
eval "ruby -I'lib:test' $test_loc"

# Now you can:
# rtest user
# rtest user_controller

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2.0.0p247 :021 > h = Hash.new([])
# => {}
2.0.0p247 :022 > h[:test]
# => []
2.0.0p247 :023 > h[:test] << "h"
# => ["h"]
2.0.0p247 :024 > h
# => {}
2.0.0p247 :025 > h.values
# => []

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module ApplicationHelper
  def fetch_param(*key_names)
    result = key_names.reduce(params) { |fetchable, param|
      fetchable.fetch(param, {})
    }
    result.is_a?(Hash) && result.empty? ? nil : result
  end
end

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User.find_by_sql(
  %q{
    SELECT table_schema 'table', sum( data_length + index_length ) / 1024 / 1024 'size'
    FROM information_schema.TABLES GROUP BY table_schema;
  }
).each { |u| puts "#{u.table}: #{u.size} MB" }

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# This option has the most clarity, but I generally hate local variables in a
# method, preferring to use tap.
def calculated_foo
  available_foos = []
  available_foos << bar
  available_foos << baz.qux if baz
  available_foos.max
end

# It's a little less clear, unless you know what tap is, and `end.max` is

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execute(<<-STR)
SELECT *
FROM *
STR

execute(<<-STR.gsub(/*/, ";DROP *;"), now: true)
SELECT *
FROM *
STR

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class Persona < Foundation::ServiceResource::Base
  route "/users/:user_id/personas", :by_user
end

id = 1
Persona.by_user id
Persona.by_user user_id: id

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class ConfigFile
  attr_reader :config_name
  attr_reader :context

  def self.read_with_env(*args)
    new(*args).read_with_env
  end

  def self.read(*args)
    new(*args).read