yaml

現在新版的ruby 2.0的ruby，需要rquire 'yaml'嗎？

====
http://reyesyang.info/articles/10

注意在YAML中，字串不一定要用双引号标示。另外，在缩排中空白字符的数目并不是非常重要，只要相同阶层的元素左侧对齐就可以了（不过不能使用TAB字符）。

haml Sass CoffeeScript IaaS Paas SaaS

IaaS  像主機
Paas 設好環境
SaaS 軟體裝好

http://blog.frost.tw/posts/2014/01/15/getting-started-paas-1

haml 處理html

Sass 處理css

CoffeeScript 處理javascript

ruby sinatra activerecord

如果是用
require "sinatra"
require "active_record"

require 'mysql2'
用底下設定比較快
ActiveRecord::Base.configurations = YAML.load_file('database.yml')
ActiveRecord::Base.establish_connection('production')

用
require "sqlite3"
ActiveRecord::Base.establish_connection(
  :adapter => 'sqlite3',
  :database =>  'blog.db'
)

注意：database.yml 要像底下，關健字不一樣，就不能用

production:
  adapter: mysql2
  database:
  host: localhost
  username:
  password:
  encoding: utf8

ruby php implode

  ostr = '{ "data": ['
articles = Article.order("created_at DESC")

  ostr = ostr + articles.map{|f| ' ["' + f.title.chomp + '", "' + f.file_url + '"] '}.join(', ')
  ostr = ostr + "]}"

map 會把activerecord取出來，設給f
然後組字串，最後加上join

這樣就像implode功能，效果很好~~

ActiveRecord Migration API

http://blackanger.blog.51cto.com/140924/122472/

Migration API

不設定主鍵
create_table :goods, :id => false do |t|
  t.integer :good_id
  t.string :good_desc

改變主鍵
create_table :goods, :id => good_id do |t|
  t.string :good_desc
end

[轉]php list

Awesome PHP

http://briteming.blogspot.tw/2014/04/awesome-php.html

[轉]jQuery file upload maxNumberOfFiles options--無用

http://stackoverflow.com/questions/16723877/jquery-file-upload-maxnumberoffiles-and-getnumberoffiles-options



I believe getNumberOfFiles was only added as an option to a recent version of jquery.fileupload-ui.js (8.2.1).





As an alternative, you can set the option singleFileUploads to false, and in the add callback you can throw errors if more than one file is added.





var maxFiles = 1;

$('#fileupload').fileupload({

singleFileUploads: false,

url: '/uploadUrl'

}).bind('fileuploadadd', function (e, data) {

var fileCount = data.files.length;

if (fileCount > maxFiles) {

alert("The max number of files is "+maxFiles);

return false;

}

});