itlivewire dev blog » Others

Codeigniter how to display the query that was executed?

admin — Mon, 23 Jan 2012 17:50:38 +0000

To display the executed query using the codeigniter database class
insert the line of code below

echo $this->db->last_query();

$this->db->last_query(); //returns the last executed query
————————————————————————————————-
So if your code is like this

$this->db->select('*'); $this->db->from('sales'); $query = $this->db->get(); echo $this->db->last_query();

// Adding echo $this->db->last_query(); will output the query on the page like this

// SELECT * FROM sales;

Create a database backup using mysqldump and gzip

admin — Wed, 18 Jan 2012 23:21:13 +0000

mysqldump -u username -p Password database_name | gzip > database_backup.sql.gz

Create a zip file and append the date on the filename in linux

admin — Thu, 29 Dec 2011 23:45:01 +0000

When we backup we want to add a date on the filename to know when the file was created

Try this line

tar -zcvf database_backup_$(date +%m-%d-%Y).tar.gz /DB/data

MySQL Duplicate entry for key PRIMARY on Auto_Increment

admin — Wed, 14 Dec 2011 18:34:48 +0000

Example errors:

“Duplicate entry ’123711155′ for key ‘PRIMARY’” or “Duplicate entry ’14676163′ for key ’1′”

Most likely this happens for tables with more than 5 million records

THE FIX

The fix is to use repair table

REPAIR TABLE ;

Note: Sometimes the duplicate error is also caused by your field type having the maximum value already, for example in tinyint which has the maximum value of 127 so it better to use bigint for your auto ids, if this is not the case you can try the solution above.

Run a titanium project using the command line

admin — Wed, 09 Nov 2011 17:29:09 +0000

1. Go to your titanium project folder

then

2. Run this command

python titanium.py run --platform=android --android=/path/to/android-sdk

3. It’s Done

Note: Your titanium project folder should have the ff:

build build.log LICENSE manifest README Resources tiapp.xml

svn connection refused

admin — Tue, 30 Aug 2011 03:37:10 +0000

Most likely this is caused by a closed svn port on your svn server

1. Check first if svn is running
ps aux | grep svnserve

2. If it is not running restart the svn service
svnserve -d -r path_of_svn

Android emulator delete an android virtual device

admin — Wed, 10 Aug 2011 10:26:25 +0000

Delete an android virtual device a.k.a AVD

Type this on the terminal

android delete avd -n name_of_device

Titanium mobile hide android title bar

admin — Tue, 19 Jul 2011 10:26:37 +0000

Hide the android window title bar on Titanium mobile

var win_home = Titanium.UI.createWindow({navBarHidden:true});

Titanium mobile Error generating R.java from manifest

admin — Tue, 19 Jul 2011 10:08:06 +0000

Possible cause you did not use the reverse domain name for the “–id” flag (i.e com.itlivewire.MyProject)

In creating your titanium mobile project “–id” should be in reverse domain format
e.g.

python titanium.py create --platform=android --android=/path/to/android-sdk --id=com.itlivewire.MyProject --name=MyProject

Titanium mobile create a project using command line

admin — Tue, 19 Jul 2011 09:24:27 +0000

Create a titanium mobile android project using command line

titanium create --platform=android --android=/path/to/android-sdk --id=com.itlivewire.MyProject --name=MyProject

python titanium.py create --platform=android --android=/path/to/android-sdk --id=com.itlivewire.Myproject --name=MyProject