SamMolokanov

Proposal

Many modern Rails application use third-party assets like JavaScript and CSS libraries or frameworks. In most cases these assets are minified and compressed by tools outside of the Rails asset pipeline. For example popular gem React on Rails uses WebPack to build JavaScript bundles. When we include these files to assets pipeline it goes to minify again. We can safely avoid double minification and reduce assets compilation time. Meanwhile it is still good to add a digest and gzip compression.

Example

Savings are strongly depend on how many minified assets are used in an application, some numbers for a random application:

# standard setup

bendilley

$enable_tracing = false
#$trace_out = File.open(Rails.root + 'trace.txt', 'w')

set_trace_func proc { |event, file, line, id, binding, classname|
  if $enable_tracing && event == 'call'
    #$trace_out.puts "#{file}:#{line} #{classname}##{id}"
    raise "crash me" if caller_locations.length > 500
  end
}

subfuzion

Install with Homebrew

brew install redis

Set up launchctl to auto start redis

$ ln -sfv /usr/local/opt/redis/*.plist ~/Library/LaunchAgents

/usr/local/opt/redis/ is a symlink to /usr/local/Cellar/redis/x.y.z (e.g., 2.8.7)

maxim

In Rails 3

NOTE: This post now lives (and kept up to date) on my blog: http://hakunin.com/rails3-load-paths

If you add a dir directly under app/

Do nothing. All files in this dir are eager loaded in production and lazy loaded in development by default.

If you add a dir under app/something/

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

jbgo

This is how I debug SystemStackError when there is no stack trace.

My first attempt was:

begin
  a_method_that_causes_infinite_recursion_in_a_not_obvious_way
rescue SystemStackError
  puts caller
end

steveclarke

Capybara

save_and_open_page

Matchers

have_button(locator)