chensoren’s gists

chensoren / gist:3081970

Created July 10, 2012 08:11

nodejs AES encrypt and decrypt

	var crypto = require('crypto');

	var AESCrypt = {};

	AESCrypt.decrypt = function(cryptkey, iv, encryptdata) {
	encryptdata = new Buffer(encryptdata, 'base64').toString('binary');

	var decipher = crypto.createDecipheriv('aes-256-cbc', cryptkey, iv),
	decoded = decipher.update(encryptdata);

chensoren / array_hash_form.html.erb

Last active June 20, 2017 13:59

generate an ordered array of hashes in form

	<input type="text" name="linkeys[][eui]" class="sign_input">
	<input type="text" name="linkeys[][code]" class="sign_input">


	params[:linkeys][0] => {"code"=>"597516F5D90924764645C6D25023ECFC", "eui"=>"C8D2C10000000A03"}



	# 更复杂的嵌套：

chensoren / gist:4407154

Created December 29, 2012 14:13

Download remote file with Paperclip gem

	# Scenario 1: remote resource returns a binary file;
	# the last part of the uri represents the file name
	# e.g. http://someurl.com/artists/jeanlucponty/tracks/elephants-in-love.mp3
	class Audio < ActiveRecord::Base
	has_attached_file :file

	def file_from_url(url)
	self.file = download_remote_file(url)
	end

chensoren / bin_str_to_hex.js

Last active December 17, 2015 08:39

二进制文本转换

	//第0, 2, 5, 11位为1，其它位为0
	//二进制应该为 010000100101
	var digitArray = ['0', '2', '5', '11'];

	var binByte;

	for(i=0; i<digitArray.length; i++) {
	binByte = binByte \| 1 << digitArray[i];
	}

chensoren / jslider_conflict.html

Last active August 24, 2018 16:43

resolve conflict between jquery-ui-slider and jquery.slider plugin

	/** both plugin use same function slider
	* need rename slider method to resolve the conflicts
	* */
	<script type="text/javascript" src="/javascripts/jslider/jquery.slider-min.js"></script>
	<script type="text/javascript" src="/javascripts/jslider/jquery.dependClass.js"></script>
	<script type="text/javascript">
	//resolve conflict between jslider and jquery-ui-slider
	$.fn.myslider = $.fn.slider;
	delete $.fn.slider;
	</script>

chensoren / KeyBinding.json

Last active December 18, 2015 03:29

sublime text preference config

	[
	{ "keys": ["ctrl+shift+."], "command": "erb" },
	{ "keys": ["ctrl+shift+f"], "command": "reindent"},
	{ "keys": ["ctrl+super+r"], "command": "reveal_in_side_bar" }
	]

chensoren / module_extend_include.rb

Created June 19, 2013 14:20

ruby module extend and include

	module Stringify

	# When a class includes a module
	# the module’s self.included method will be invoked.
	def self.included(base)
	# Initialize module.
	end

	# Requires an instance variable @value
	def stringify

chensoren / layout.html.erb

Created June 21, 2013 10:25

rails 3 content_for


	<%= content_for?(:page_title) ? yield(:page_title) : default_page_title %>

chensoren / iso_time_local.js

Created July 2, 2013 00:36

parse ISO 8601 date string to local time

	function parseISO8601(str) {
	// we assume str is a UTC date ending in 'Z'
	var parts = str.split('T'),
	dateParts = parts[0].split('-'),
	timeParts = parts[1].split('Z'),
	timeSubParts = timeParts[0].split(':'),
	timeSecParts = timeSubParts[2].split('.'),
	timeHours = Number(timeSubParts[0]),
	_date = new Date;

chensoren / broken_img.html

Created July 4, 2013 02:41

hide broken image

freeman chensoren