sj26

# A formtastic input which incorporates carrierwave uploader functionality.
#
# Intelligently adds the cache field, displays and links to the current
# value if there is one, adds a class to the wrapper when replacing an
# existing value, allows removing an existing value with the checkbox
# taking into account validation requirements.
#
# There are several options:
#
#  * Toggle the replacement field with `replaceable: true/false`.

DevL

namespace :generate do
  desc 'Generate a timestamped, empty Sequel migration.'
  task :migration, :name do |_, args|
    if args[:name].nil?
      puts 'You must specify a migration name (e.g. rake generate:migration[create_events])!'
      exit false
    end

    content = "Sequel.migration do\n  up do\n    \n  end\n\n  down do\n    \n  end\nend\n"
    timestamp = Time.now.to_i

subelsky

namespace :assets do
  task :check do
    root_dir = File.join(File.dirname(__FILE__),"..","..")
    assets_last_modified_at  = Dir["#{root_dir}/app/assets/**/**"].map { |p| File.mtime(p) }.sort.last
    assets_last_compiled_at =  Dir["#{root_dir}/public/assets/**/**"].map { |p| File.mtime(p) }.sort.last

    if assets_last_modified_at > assets_last_compiled_at
      fail "Assets need to precompiled; last asset modified at #{assets_last_modified_at}"
    end
  end

jberkus

WITH table_scans as (
    SELECT relid,
        tables.idx_scan + tables.seq_scan as all_scans,
        ( tables.n_tup_ins + tables.n_tup_upd + tables.n_tup_del ) as writes,
                pg_relation_size(relid) as table_size
        FROM pg_stat_user_tables as tables
),
all_writes as (
    SELECT sum(writes) as total_writes
    FROM table_scans

JunichiIto

This list is based on aliases_spec.rb.

You can see also Module: RSpec::Matchers API.

matcher	aliased to	description
a_truthy_value	be_truthy	a truthy value
a_falsey_value	be_falsey	a falsey value
be_falsy	be_falsey	be falsy
a_falsy_value	be_falsey	a falsy value

take-five

Taken from here

Deploy without downtime

We deploy without downtime when we can to avoid user frustration. It's pretty rare that we can't.

There's a great talk/slideshow on this, but no convenient reference that we're aware of – hence this document.

markan

The problem

I've frequently been bit by failures restarting my vpn on my Mac. The connection may appear to start up in Shimo (the menu icon will change) but it looks like vpnc can't connect.

Looking at the log, we see the connection gets stuck

ERROR: can't send packet: Can't assign requested address

This has plagued me for a while, and my only fix has been to restart the machine. I hate restarting my machine. So I finally made time to dig in and find a better solution

jonsuh

# ----------------------------------
# Colors
# ----------------------------------
NOCOLOR='\033[0m'
RED='\033[0;31m'
GREEN='\033[0;32m'
ORANGE='\033[0;33m'
BLUE='\033[0;34m'
PURPLE='\033[0;35m'
CYAN='\033[0;36m'

AtulKsol

1. pg_dump is a nifty utility designed to output a series of SQL statements that describes the schema and data of your database. You can control what goes into your backup by using additional flags.
   Backup: pg_dump -h localhost -p 5432 -U postgres -d mydb > backup.sql

   Restore: psql -h localhost -p 5432 -U postgres -d mydb < backup.sql

   -h is for host.
   -p is for port.
   -U is for username.
   -d is for database.

hermanbanken

FROM nginx:alpine AS builder

# nginx:alpine contains NGINX_VERSION environment variable, like so:
# ENV NGINX_VERSION 1.15.0

# Our NCHAN version
ENV NCHAN_VERSION 1.1.15

# Download sources
RUN wget "http://nginx.org/download/nginx-${NGINX_VERSION}.tar.gz" -O nginx.tar.gz && \