Qihuan Piao kinopyo

Goal

"Using MongoMapper to find all users that :name column is not null", this is all I want.

Solution

To do so, use this query:

User.where(:name.ne => nil).all
User.all(:name.ne => nil)

asset hostを指定

image_tag("rails.png")のhelper methodで生成するリンクはデフォルトでは同じホストのpublicフォルダを指しています。それを変更したい場合はconfig/environments/production.rbのActionController::Base.asset_hostをいじります。

ActionController::Base.asset_host = "assets.example.com"

image_tag("rails.png")
# => <img alt="Rails" src="http://assets.example.com/images/rails.png?1230601161" />

	# in ApplicationController

	before_filter do \|controller\|
	authenticate if Rails.env.production?
	end

	def authenticate
	authenticate_or_request_with_http_basic do \|username, password\|
	username == ENV["auth_user"] && password == ENV["auth_password"]
	end

	$("#some_checkbox").click (e) ->
	if $(this).is(':checked')
	# actions when checked
	else
	# actions when not checked

	# under /Users/username/.rvm/gems/ruby-1.9.2-p290/gems/turn-0.8.3/lib/turn/autorun/minitest.rb

	require 'turn/autoload'

	require 'minitest/unit'
	require 'minitest/spec'

	require 'turn/colorize'
	require 'turn/controller'
	require 'turn/runners/minirunner'

	# this will work
	<% unless defined?(:show_author) %>
	<% show_author = true %>
	<% end %>

	# NOT work
	<% show_author = true unless defined?(:show_author) %>

	# this will work
	<% show_author = true unless local_assigns.has_key? :show_author %>

	# in your view erb file
	<%= link_to_function "test js", '$(this).html("js works")' %>

	# in test spec
	it "supports js", :js => true do
	visit tasks_path
	click_link "test js"
	page.should have_content("js works")
	end

	<%= stylesheet_link_tag "main.css", :media => "all" %>
	<%= stylesheet_link_tag "retina.css", :media => "only screen and (-webkit-min-device-pixel-ratio: 2)" %>

	require 'cgi'
	CGI.escape(url)

	$ echo $SHELL

	$ chsh -s /bin/tcsh