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")

iannono

How to install PhantomJS on Ubuntu

Version: 1.9.7

Platform: x86_64

First, install or update to the latest system software.

sudo apt-get update

markbao

require 'fileutils'

desc "Create nondigest versions of all ckeditor digest assets"
task "assets:precompile" => :environment do
  fingerprint = /\-([0-9a-f]{32})\./
  for file in Dir["public/assets/ckeditor/**/*"]
    # Skip file unless it has a fingerprint
    next unless file =~ fingerprint

    # Get filename of this file without the digest

zhangyuan

合成多张图片

以下只适合 v3.5.0 即以前的版本。v3.6.0 以后，对选项增加了 shellescape 减少了命令行注入的风险。

ImageMagick 的 composite 命令可以合成图片，但是一次只能合成两张。如果需要合成多张图片，得用 convert 命令和 -composite 选项。MiniMagick 的push方法，可添加选项和参数（就像在命令行操作一样）。下是一个合成多张图片的 CarrierWave 的 process 示例。

  def composite_images
    manipulate! do |img|
      img.combine_options(:convert) do |c|

dypsilon

Frontend Development

Attention: the list was moved to

https://github.com/dypsilon/frontend-dev-bookmarks

This page is not maintained anymore, please update your bookmarks.

---

xdite

Security is Hard

Massive Assignment

• watch for ActiveRecord Relation, like has_many, has_many :through
• watch for user_roles, `group_users
• UPDATE action

Admin

joost

There are many (old) clients available:

• https://github.com/tpitale/legato (active, supports API v3)
• https://github.com/activenetwork/gattica
• https://github.com/vigetlabs/garb

The Google Analytics API is at v3 (at time of writing).

This example uses Google's Ruby API client to access Analytics. Use https://github.com/google/google-api-ruby-client (Google supported).

nightire

Routes

小心地使用 Match（Rails 3 已实现）

Rails 3 提供了 match 方法供我们自定义 routes，然而我们要小心使用它以避免“跨站脚本攻击”（XSS Attack）。比如像这样的 routes：

注：（r3 代表 Rails 3，r4 代表 Rails 4）

# routes.rb

happypeter

#################################
#
#  本清单基于 ubuntu 12.04，
#
#  只是一个清单，不是一个可以安全执行的脚本
#
#################################

# create a linode,login as root, and create a common user for all the tasks
ssh root@the_ip_of_this_linode

shtirlic

set :stage, 'production'
set :shared_children, shared_children << 'tmp/sockets'

puma_sock    = "unix://#{shared_path}/sockets/puma.sock"
puma_control = "unix://#{shared_path}/sockets/pumactl.sock"
puma_state   = "#{shared_path}/sockets/puma.state"
puma_log     = "#{shared_path}/log/puma-#{stage}.log"

namespace :deploy do
  desc "Start the application"