stevenharman

# Usage: in develoopment.rb
#
#   config.middleware.insert_before Rails::Rack::Logger, PeacefulAssetsLogger
#
class PeacefulAssetsLogger
  def initialize(app)
    unless ENV[ 'LOG_ASSETS' ]
      puts 'For more peaceful logs we have silenced the asset logs.'
      puts 'To see asset requests in the logs, set LOG_ASSETS=true env variable.'
      Rails.application.assets.logger = Logger.new('/dev/null')

stevenharman

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

stevenharman

class Foo < Struct.new(:bar); end
puts Foo.ancestors #=> [Foo, #<Class:0x007fae624e79e8>, Struct, Enumerable, Object, PP::ObjectMixin, Kernel, BasicObject]

Bar = Struct.new(:foo)
puts Bar.ancestors #=> [Bar, Struct, Enumerable, Object, PP::ObjectMixin, Kernel, BasicObject]

# The first way adds an extra, unnecessary, anonymous module in the ancestors chain.

stevenharman

Compose-able Query Objects in Rails

Example usage:

old_accounts = Account.where("created_at < ?", 1.month.ago)
old_abandoned_trials = AbandonedTrialQuery.new(old_accounts)

old_abandoned_trials.find_each do |account|
 account.send_offer_for_support

stevenharman

me:

Is it possible to send a signal to a worker/process? I realize the platform sends SIGTERM and SIGKILL when restarting a dyno, but I need to send a USR1 to one of my workers to tell it to stop picking up new jobs. Normally this is achieved via kill -USR1 <pid>, but on the Heroku platform not only do we not know know the pid, we also don't run one-off commands on the same dyno.

Caio (heroku support):

We had this feature experimentally at some point but it was never productized. I recommend you find other ways to signal your processes, like setting a database flag.

me:

stevenharman

module ServiceKeys

  def self.brewery_db
    ENV['BREWERY_DB_API_KEY']
  end

end

stevenharman

class AdaptBreweryDBWebhook
  def initialize(app)
    @app = app
  end

  def call(env)
    adapt_action_param(env)
    @app.call(env)
  end

stevenharman

module World
  module USA
    class Directory
      def move_to(a_state)
        state = a_state.class.name.split('::').last #=> 'Georgia'

        # fails
        self.class.const_get(state) #=> Want World::USA::Georgia

        # but this would work

stevenharman

Cloudsheet::Map.new(
  1 => { month: Date },
  2 => { income: Curreny },
  3 => { other: -> (raw) { some_custom_transform(raw) } }
)

stevenharman

/ In app/views/shared/

#dev-badge
  span= Rails.env
  span It ain't production!