ian iannono

models

controllers should be responsible for orchestrating the models. means that you should always tell objects what to do, and not ask them question about there state

# controller
if @item.publish
  flash[:notice] = "xxxx"
end
# modle
class Item < ActiveRecord::Base

My issues with Modules

In researching topics for RailsCasts I often read code in Rails and other gems. This is a great exercise to do. Not only will you pick up some coding tips, but it can help you better understand what makes code readable.

A common practice to organize code in gems is to divide it into modules. When this is done extensively I find it becomes very difficult to read. Before I explain further, a quick detour on instance_eval.

You can find instance_eval used in many DSLs: from routes to state machines. Here's an example from Thinking Sphinx.

class Article &lt; ActiveRecord::Base

based on

you need to install plugins blow:

	### test

	capture_io
	flunk msg = nil
	pass msg = nil
	skip msg = nil, bt = caller

	assert test, msg = nil
	assert_block msg = nil
	assert_empty obj, msg = nil

	require 'feedzirra'

	# fetching a single feed
	feed = Feedzirra::Feed.fetch_and_parse("http://feeds.feedburner.com/PaulDixExplainsNothing")

	# feed and entries accessors
	feed.title # => "Paul Dix Explains Nothing"
	feed.url # => "http://www.pauldix.net"
	feed.feed_url # => "http://feeds.feedburner.com/PaulDixExplainsNothing"
	feed.etag # => "GunxqnEP4NeYhrqq9TyVKTuDnh0"

	#!/usr/bin/env ruby
	##encoding:utf-8

	require 'open-uri'
	require 'nokogiri'
	require 'stringio'
	require 'watir-webdriver'

	def generate_cast_url(link)
	link + "?view=asciicast"

	#!/usr/bin/env ruby
	##encoding:utf-8

	require 'open-uri'
	require 'nokogiri'
	require 'stringio'

	def generate_cast_url(link)
	link + "?view=asciicast"
	end

	export PATH=$HOME/local/bin:$PATH

	export PATH="$HOME/.rbenv/bin:$PATH"
	eval "$(rbenv init -)"

	#for git
	BASH_NEWLINE="\n"
	BASH_GRAY="\[\e[1;30m\]"
	BASH_LIGHT_GREEN="\[\e[1;32m\]"
	BASH_WHITE="\[\e[1;0m\]"

	//在controller和directive中定时修改作用域模型的方式
	app.controller('generalCtrl', ['$scope', function($scope) {
	$scope.pv = 0;
	//通过调用apply触发内部的direct循环，从而更新作用域和模型
	setInterval(function(){$scope.$apply()}, 1000);
	}])

	directives.directive('rtIp', function(){
	return function(scope, elm, attrs) {
	setInterval(function(){scope.pv = scope.pv + 1;}, 1000);

	#!/usr/bin/env ruby
	#encoding:utf-8

	require 'csv'
	require 'open-uri'
	require 'nokogiri'
	require 'date'

	def generate_url(date)
	"http://history.tianqizx.cn/his_1582_" + date.strftime('%Y/%-m/%-d') + ".aspx"