ProGM

Arel Cheatsheet on Steroids

A (more) complete cheatsheet for Arel, including NamedFunction functions, raw SQL and window functions.

Tables

posts = Arel::Table.new(:posts)
posts = Post.arel_table # ActiveRecord

Table alias

komasaru

#! /usr/local/bin/ruby

class Array
  def rcc_spearman(y)
    # 以下の場合は例外スロー
    # - 引数の配列が Array クラスでない
    # - 自身配列が空
    # - 配列サイズが異なる
    # - 数値以外のデータが存在する
    raise "Argument is not a Array class!"  unless y.class == Array

andersevenrud

True Color (24-bit) and italics with alacritty + tmux + vim (neovim)

This should make True Color (24-bit) and italics work in your tmux session and vim/neovim when using Alacritty (and should be compatible with any other terminal emulator, including Kitty).

Testing colors

Running this script should look the same in tmux as without.

curl -s https://gist.githubusercontent.com/lifepillar/09a44b8cf0f9397465614e622979107f/raw/24-bit-color.sh >24-bit-color.sh

kazimzaidi

#!/usr/bin/env ruby

require 'english'
require 'rubocop'

ADDED_OR_MODIFIED = /A|AM|^M/.freeze

changed_files = `git status --porcelain`.split(/\n/).
    select { |file_name_with_status|
      file_name_with_status =~ ADDED_OR_MODIFIED

davydovanton

Пример рефакторинга с использованием транзакций

Опять рассмотрим tasks#create экшен.

В экшене 3 разных логики, которые выполняются последовательно:

1. валидация данных - необходимый шаг;
2. сохраниение таска - необходимый шаг, если какая-то ошибка, необходимо возвращать failed значение;
3. отправка нотификаций - мы не хотим, что бы наша транзакия не выполнялась, если отправка нотификации не выполнится;

Поэтому напишем нашу транзакцию. Так же мы будем использовать Either монаду для возвращения статуса шага транзакции. Right для успешного, Left - не успешного:

emiliorizzo

# Varnish configuration 
# Purge only for basic auth users

## HOW TO PURGE

### with browser 
#  1 - Set basic auth on /auth (or change the rule)
#  2 - Authenticate on /auth, and load url to refresh (purge) cache.

### with wget

mankind

http://stackoverflow.com/questions/22667401/postgres-json-data-type-rails-query
http://stackoverflow.com/questions/40702813/query-on-postgres-json-array-field-in-rails

#payload: [{"kind"=>"person"}]
Segment.where("payload @> ?", [{kind: "person"}].to_json)

#data: {"interest"=>["music", "movies", "programming"]}
Segment.where("data @> ?",  {"interest": ["music", "movies", "programming"]}.to_json)
Segment.where("data #>> '{interest, 1}' = 'movies' ")
Segment.where("jsonb_array_length(data->'interest') > 1")

aayubkh

Dependencies

1. usb_modeswitch, usb_modeswitch-data
2. libusb1
3. libusb-devel(Fedora), libusb-dev(Debian based)

Configuration

By default, your linux box would register your Huawei E8372 as a Mass Storage device and not (somehow) as a modem. First, make sure you have the exace same device we're talking about. This can be confirmed by looking at two values using the following command (while the dongle is plugged in): As an elevated user:

    # lsusb | grep Huawei

ozgun

class Dashboard::Payments::CardsController < ::Dashboard::Payments::BaseController

  self.responder = Core::CustomServiceResponder
  respond_to :html

  before_action :customer_required

  def destroy
    service = Payments::Stripe::DeleteCreditCard.new(current_user)
    status_object = service.call(params[:identifier])

stereodenis

def social_meta_tags
    title = "#{(content_for?(:title) ? (strip_tags(content_for(:title)).html_safe + ' / ') : '')}#{t('project_title')}"
    description = content_for?(:description) ? content_for(:description) : ''
    image = if @doc.present?
      image_url(@doc.cover_photo.cover.url)
    elsif @main.present?
      image_url(@main.cover_photo.cover.url)
    else
      ''
    end