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version: '2'

services:

  elasticsearch:
    build:
      context: elasticsearch/
    volumes:
      - ./elasticsearch/config/elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml:ro
    ports:

bogn83

belongs_to:

1. Assigning an object to a belongs_to association does not automatically save the object. It does not save the associated object either.

has_one:

1. When you assign an object to a has_one association, that object is automatically saved (in order to update its foreign key).
2. In addition, any object being replaced is also automatically saved, because its foreign key will change too
3. If either of these saves fails due to validation errors, then the assignment statement returns false and the assignment itself is cancelled.
4. If the parent object (the one declaring the has_one association) is unsaved (that is, new_record? returns true) then the child objects are not saved. They will automatically when the parent object is saved.

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#!/bin/bash
#
# Usage grep-with-gpg path/to/encrypted/files/*
#

if [ -z "$1" ]; then
    echo "Usage: $0 'search string' [path/to/encrypted/files/*]";
    exit 1;
else
    SEARCH=$1;

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import re

history_snippet = '''Start-Date: 2014-08-25  12:52:37
Commandline: apt-get install -y openjdk-6-jdk openjdk-7-jdk icedtea-7-plugin
Install: openjdk-6-jre-lib:amd64 (6b32-1.13.4-4ubuntu0.14.04.1, automatic), icedtea-netx-common:amd64 (1.5-1ubuntu1, automatic), openjdk-6-jdk:amd64 (6b32-1.13.4-4ubuntu0.14.04.1), libxcb1-dev:amd64 (1.10-2ubuntu1, automatic), ttf-dejavu-extra:amd64 (2.34-1ubuntu1, automatic), icedtea-6-jre-cacao:amd64 (6b32-1.13.4-4ubuntu0.14.04.1, automatic), icedtea-7-plugin:amd64 (1.5-1ubuntu1), libxau-dev:amd64 (1.0.8-1, automatic), openjdk-6-jre-headless:amd64 (6b32-1.13.4-4ubuntu0.14.04.1, automatic), x11proto-core-dev:amd64 (7.0.24-1, automatic), libxt-dev:amd64 (1.1.4-1, automatic), openjdk-7-jdk:amd64 (7u65-2.5.1-4ubuntu1~0.14.04.1), libx11-dev:amd64 (1.6.2-1ubuntu2, automatic), x11proto-kb-dev:amd64 (1.0.6-2, automatic), openjdk-6-jre:amd64 (6b32-1.13.4-4ubuntu0.14.04.1, automatic), xtrans-dev:amd64 (1.3.2-1, automatic), libxdmcp-dev:amd64 (1.1.1-1, automatic), icedtea-netx:a

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# shortform git commands
alias g='git'

# print your list of commits this month for a repo
git log --since='last month' --author="$(git config user.name)" --oneline

# get a list of all commit messages for a repo
git log --pretty=format:'%s'

# pull all git repos to current version

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To remove a submodule you need to:

• Delete the relevant section from the .gitmodules file.
• Stage the .gitmodules changes git add .gitmodules
• Delete the relevant section from .git/config.
• Run git rm --cached path_to_submodule (no trailing slash).
• Run rm -rf .git/modules/path_to_submodule (no trailing slash).
• Commit git commit -m "Removed submodule "
• Delete the now untracked submodule files rm -rf path_to_submodule

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tmux shortcuts & cheatsheet

start new with session name:

tmux new -s myname

attach to named:

tmux a -t myname

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# Flags Ruby

# Sentinel to check that the rbenv-vars plugin is in use.
RBENV_VARS_ENABLED=1

# Ruby 2.1 GC reading:
# http://tmm1.net/ruby21-rgengc/
# http://thorstenball.com/blog/2014/03/12/watching-understanding-ruby-2.1-garbage-collector/
# http://samsaffron.com/archive/2013/11/22/demystifying-the-ruby-gc

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Make sessions queryable by user with ActiveRecord Session Store and Devise

1. Install the ActiveRecord Session Store gem and read the documentation for how to use it and create your sessions table.

2. Create a migration to add user_id to the sessions table.

class AddUserIdToSessions < ActiveRecord::Migration
  disable_ddl_transaction!

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# retrieves commit relative date and message
humanify() {
  while read hash; do
    # echo to trim the new line
    echo $( git log -n 1 ..$hash --format='%ci : %h : %s%n%b' )
  done
}

# show the commits!
git fsck --unreachable | grep -oP '(?<=commit )\w+' | humanify | sort