gbinghan[dev-blog]

Was trying to setup an instance on Amazon which I can do a git push to update the /var/www/html folder. Decided to share the steps here, so that other beginners like me can benefit too! Prerequisites Setting up Amazone Instance  This article  basically covers all the steps need to fire-up an instance and set the Security Group and SSH . Install LAMP + phpMyAdmin Install LAMP stack is easy, but install phpMyAdmin is slightly tricky. Luckily this github gist explained the steps very well. The only missing part that you might want to take note is the part to change the user of the html directory. sudo chown -R ec2-user /var/www/html/ Setting up Git Setting Up Git Repo to work with /var/www/html folder At first I tried this solution from  stackoverflow post . The method is: Copying .git folder to /var/www/html/ folder. Then use a post-update script to update the git repo. The idea looks logical, and easy to understand, bu...

Was trying to install Redis on my EC2 test server just now and bump into this error. zmalloc.h:51:31: error: jemalloc/jemalloc.h: No such file or directory I was very sure that jemalloc was installed. After searching for a while, I found the solution from redis-db Google Group. Apparently, running make distclean solves the problem. It remove all compilation artifacts, and dependencies. :)

Bump into the problem of reintializing TinyMCE textbox after replacing the DOM with jQuery load. The Problem After saving a form on a page (with multiple forms), I did a jQuery.load() to replace the DOM of the particular section. Then I run the initialization function to reinitialize all DOMs, including TinyMCE. I realized TinyMCE contents is not saved after this. Solution: Initial attempt After Google-ed for a while, I found this solution from StackOverflow . tinymce.execCommand('mceRemoveControl', true, 'editor_id'); So, to use it, it would be... _init = function() { /* Some other initialization code here */ tinymce.execCommand('mceRemoveControl', true, 'editor_id'); tinyMCE.init({ /* TinyMCE options */ }); } Oh, wait... Some issues: My ' editor_id ' is dynamic...  I have multiple textboxes Solution: Second attempt. Easy. Just use jQuery.each() to loop through all the textbox and remove TinyMCE control from each o...

For those of you who are like me - too impatient to wait for Samsung Singapore to release ICS update for i9100 Galaxy S2, can follow the following steps to flash to ICS (and in addition, flash to CM9). Ice Cream Sandwich  Android I9100XWLP7 4.0.3 (United Kingdom / Ireland) 1. Download ICS firmware http://www.hotfile.com/dl/153177481/9861a3a/I9100XWLP7_I9100XEULP5_XEU.zip.html 2. Boot into Download Mode Turn off phone. Vol Down + Home + Power 3. Odin Flash Guide http://forum.xda-developers.com/showthread.php?t=1075278 http://forum.xda-developers.com/showthread.php?t=1406664 ICS is cool, but... the official ROM is still laggy. So I decided to take further steps to mod it to CyanogenMod. So if you are like me, want a smooth UX, follow the following optional steps :) Root 3. CF-root by Chainfire . http://forum.xda-developers.com/showthread.php?t=1103399 4. Remove Yellow Triangle during startup, using TriangleAway from Chainfire . htt...

Got this spam mail that looks as if its from my other email account (Yahoo Mail). Further inspect on the header reveals that the mail is from hotmail_631448ecb4add0e [at] hotmail.com. And the mail server is actually from the IP 179.89.131.27. Why Hotmail SmartScreen not doing its job SmartScreen should have filtered the email content, based on EITHER one of the following criteria, that can be implemented by checking just the email header. 1. The email content is obviously spam content. Nuff said. 2. The sender is obviously from a "anonymous" email that pretends to be another email. 3. The IP (179.89.131.27) of the mail server is OBVIOUSLY hosted on a spam source. This can be easily detected by cross-check with one of the spam database out there. For example http://www.dnsbl.info/ . These are simple methods to provide minimal layers protection for Hotmail users.  (Notice I haven't even go into advanced SPAM fighting techniques like using  DMARC ) Takea...

Biggest Mistakes The biggest mistakes for new (or inexperienced) developers, like me, is to jump straight into coding a website. There are so many bootstrap tools (or so caller boilerplates) out there for you to start, without falling into the pitfalls of bad (really bad) designs. I'm speaking from my personal experience, with Lunchsparks . Along the way of "designing" and coding, both at the same time, I poorly designed the elements in the website, from layouts (grids, containers, tables) to buttons (color, states). The Tools These are two tools that I came across recently, which I think its awesome! These tools encapsulated the almost (if not all) the elements for designing a great (responsive) website. Bootstrap, from Twitter Bootstrap, from Twitter A very clear demo site that demonstrate what the tools (javascripts, and css) does. Recommended for new learners. HTML5 Boilerplates HTML5 Boilerplates By Paul Irish . A very cool Googler that I fo...

Was trying to do insert/update using CodeIgniter Active Record helpers, and realize the usual way of inserting doesn't work, because the helper functions actually escaped the values to prevent SQL injection. So we can't do the just group all the data together the easy way. $data['field1'] = $data1; $data['field1'] = $data2 $data['created_date'] = 'NOW()'; $this -> db -> insert($this -> tables['some_table'], $data); There are two possible ways to go around this. 1. Use CodeIgniter $db -> set() function, with the additional FALSE parameter to prevent data from being escaped. $this -> db -> set('created_date', 'NOW()', FALSE); $this -> db -> insert($this -> tables['some_table'], $data); 2. Use PHP data function to generate datetime string. The only thing to note with this method is, in most cases, the PHP server time and the MySQL time is different. $data['created_dat...