Re – Designing LCMD – Introducing the New User Interface


I have been spending the last few days re-designing the User Interface of Language Coverage Matrix Dashboard. Although the last one was working smoothly, there was a need of more polished and efficient one than the previous. I met up with my mentors and the designer of our Language Engineering team a number of times to decide on the new UI.

So, let’s walk through the newly added User Interface of LCMD!

Now to begin with, I would like to mention what exactly demanded a new UI here. The issue with the previous one was as simple as: It demanded to show more details and also, the informations needed to be grouped.

About the new UI:

We have a few new features and a few useful changes here in the new UI. Which are basically listed as,

  • Data grouped in Universal Language Selector, Project Milkshake, Legacy Extension and More Info of that language.
Screen Shot 2013-07-28 at 3.56.33 AM

The new options

  • This grouped data is shown in responsive and smooth drop down.
Screen Shot 2013-07-28 at 3.57.06 AM

Dropped Down version of the options

  • New switch button is introduced for more efficient editing by the admin.
Screen Shot 2013-07-28 at 3.57.47 AM

Switch buttons

  • New modal design created to update the information of languages.
  • Icon cross and tick are added for showing language support.
Screen Shot 2013-07-28 at 3.56.46 AM

The cross and tick!

This is all about the new UI that we have right now! 🙂

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How to implement system command using python


In this post I will show you that how you can exactly implemented system command using python.Here we use for example ls -l command. When I use this command in terminal it gives me following output

Harshs-MacBook-Pro:scripts harshkothari$ ls -l
total 32
-rw-r--r--  1 harshkothari  staff    13 Jul 23 02:33 demo.ini
-rw-r--r--@ 1 harshkothari  staff  1864 Jul 23 04:30 filesread.py
-rw-r--r--  1 harshkothari  staff  4121 Jul 23 04:30 langtofontmap.json

Now this command we can implement by following methods using python 🙂

  • os.system("command with args") passes the command and arguments to your system’s shell. This is nice because you can actually run multiple commands at once in this manner and set up pipes and input/output redirection.
    os.system("command < input_file | anothercommand > output_file")
    However, while this is convenient, you have to manually handle the escaping of shell characters such as spaces, etc. On the other hand, this also lets you run commands which are simply shell commands and not actually external programs. http://docs.python.org/lib/os-process.html

    >>> import os
    >>> os.system('ls -l')
    total 32
    -rw-r--r--  1 harshkothari  staff    13 Jul 23 02:33 demo.ini
    -rw-r--r--@ 1 harshkothari  staff  1864 Jul 23 04:30 filesread.py
    -rw-r--r--  1 harshkothari  staff  4121 Jul 23 04:30 langtofontmap.json
    0
  • stream = os.popen("command with args") will do the same thing as os.systemexcept that it gives you a file-like object that you can use to access standard input/output for that process. There are 3 other variants of popen that all handle the i/o slightly differently. If you pass everything as a string, then your command is passed to the shell; if you pass them as a list then you don’t need to worry about escaping anything. http://docs.python.org/lib/os-newstreams.html
    >>> import os
    >>> print os.popen('ls -l').read()
    total 32
    -rw-r--r--  1 harshkothari  staff    13 Jul 23 02:33 demo.ini
    -rw-r--r--@ 1 harshkothari  staff  1864 Jul 23 04:30 filesread.py
    -rw-r--r--  1 harshkothari  staff  4121 Jul 23 04:30 langtofontmap.json
  • The Popen class of the subprocess module. This is intended as a replacement for os.popenbut has the downside of being slightly more complicated by virtue of being so comprehensive. For example, you’d say
    print Popen("ls -l", stdout=PIPE, shell=True).stdout.read()
    instead of
    print os.popen("ls -l").read()
    but it is nice to have all of the options there in one unified class instead of 4 different popen functions. http://docs.python.org/lib/node528.html

    >>> from subprocess import Popen, PIPE
    >>> print Popen("ls -l", stdout=PIPE, shell=True).stdout.read()
    total 32
    -rw-r--r--  1 harshkothari  staff    13 Jul 23 02:33 demo.ini
    -rw-r--r--@ 1 harshkothari  staff  1864 Jul 23 04:30 filesread.py
    -rw-r--r--  1 harshkothari  staff  4121 Jul 23 04:30 langtofontmap.json
    
  • The call function from the subprocess module. This is basically just like the Popen class and takes all of the same arguments, but it simply wait until the command completes and gives you the return code. For example:
    call(["ls", "-l"], shell=True) http://docs.python.org/lib/node529.html

    >>> from subprocess import call
    >>> call(["ls", "-l"], shell=True)
    demo.ini                filesread.py            langtofontmap.json
    0
  • Using command module http://docs.python.org/2/library/commands.html
    >>> import commands
    >>> commands.getstatusoutput('ls -l')
    (0, 'total 32\n-rw-r--r--  1 harshkothari  staff    13 Jul 23 02:33 demo.ini\n-rw-r--r--@ 1 harshkothari  staff  1864 Jul 23 04:30 filesread.py\n-rw-r--r--  1 harshkothari  staff  4121 Jul 23 04:30 langtofontmap.json')
    >>> commands.getoutput('ls -l')
    'total 32\n-rw-r--r--  1 harshkothari  staff    13 Jul 23 02:33 demo.ini\n-rw-r--r--@ 1 harshkothari  staff  1864 Jul 23 04:30 filesread.py\n-rw-r--r--  1 harshkothari  staff  4121 Jul 23 04:30 langtofontmap.json'
    
  • The os module also has all of the fork/exec/spawn functions that you’d have in a C program

Hope this will help you 🙂

Pass Random variable to shell script rather then $1 or $2 using php


Here I am showing you how can you pass the random variable to shell script. ( i.e like $uname 🙂 )

You can receive data using $1 or $2 variable but you can’t directly receive data into $uname or any random variable.
Here is my bash file demo.sh

#!/bin/bash
echo $uname

Now I have to pass $uname variable so directly using this php function you cant do this

exec("sh demo.sh harshkothari",$output);

You have to send it via environment variable . This is simple code snippet how you can you pass this. php file name is shell.php

$uname = 'harshkothari';
putenv('uname='. $uname); //put environment variable uname 
exec("sh demo.sh",$output); //execute command
echo($output[0]. "\n"); //print return value

$output will return the last line of output and it will show like this

Harshs-MacBook-Pro:lcmapiuse harshkothari$ php shell.php 
harshkothari
Harshs-MacBook-Pro:lcmapiuse harshkothari$ 

Here is snapshot of terminal output

Output of php script, passing random variable to shell script

Output of php script, passing random variable to shell script

Wikimedia Tool setup for LCM-Dashboard (GSoC Project)


Wikimedia tools login screen using ssh

Wikimedia tools login screen using ssh

wikimedia tool setup is very tedious work but #wikimedia-labs helps a lot.

After creating an account and being approved by admin. You will log in to your tool using this command.

ssh -A username@tools-login.wmflabs.org

After logging into your tool you have to use following command to switch to your service

become toolname

Now this have following things

  • public_html – where you can place your html, php, css, js

  • cgi-bin – where you can place your python script etc

  • replica.my.cnf – contains username and password

Now Creation of databse for your project

In the first step you have to find you username and password by using “” file.

After that your database name must be USERNAME__DBNAME (2 underscore)

mysql --defaults-file="${HOME}"/replica.my.cnf -h tools-db 

after that MariaDB console will open and in that you can create databasw

MariaDB [(none)]> CREATE DATABASE USERNAME__DBNAME;

you can access this database by using this command

mysql --defaults-file="${HOME}"/replica.my.cnf -h tools-db USERNAME__DBBAME

If you want to connect the database to your project

host = tools-db
uname = your_username
pass = your_password
dbname = USERNAME__DBNAME

Then you can push the file to remote using git via clone or you can use scp command to push files from remote to local like this

scp <files> USERNAME@tools-login.wmflabs.org:/data/project/<tool-name>

Hope it will help you 🙂

Link of my tools on wikimedia labs : lcm-dashboard

Being Google Summer of Code Intern


I am very excited (and also a little late :D) to share the news that I have been selected as an intern for Google summer of code in Wikimedia Foundation for the project of developing language coverage matrics dashboard for language engineering team of Wikimedia Foundation.

I would like to thank my mentors Runa Bhattacharjee and Alolita Sharma, for guiding me throughout and very special thanks to Amir Aharohi for his valuable inputs for this proposal. Last but not the least special thanks to Sumana and Quim for polishing up my proposal, and the feedbacks all this while.

Being selected as a GSoC intern was finally a good news after quite while. The result came at 12:30 midnight – I couldn’t sleep. Nevertheless, great night it was and so was the news.

Community bonding period started right after. I tinkered around a few new technologies and did the overall planning for my project.

Until June 17

Until June 24

  • Created new language entry system

    Search + New language button

    Search + New language button

    Language Entry form

    Language Entry form

     

  • Created language search system with suggestion

Language search with suggestion facility

Language search with suggestion facility

Language Search result

Language Search result

 

Until July 1

  • created and set up primary thing on wikimedia labs

  • jquery.ime implemented in project

  • done minor changes in language search system

  • created on the spot editing facility for any language detail under admin privileges

Edit button for on the spot editing

Edit button for on the spot editing

when click on edit button this menu will appear

when click on edit button this menu will appear

After saving the changes it will change

After saving the changes it will change

Until July 8

  • set up basic filtering functionality

  • set up some test cases to find smooth and fast filter facility

  • created simple idea of API for language data

Until July 15

  • Created Filtering functionality : By this time, a filtering functionality seemed to be an important feature to have on the LCMD interface. Filtering simply means that there would be a list of the language tools on one side along with checkboxes and the checking those would output the list of the languages that have those tools enabled. So, if say suppose, we have both jquery.ime and jquery.webfonts checked in, the language output will give a list of the common languages with both the tools enabled. This was kind of important. Screen shot and more detail on another blog post.

  • Set up tools instance for project tool instance

  • Set up new repo for project with lots of commits New repo

  • Created simple php API for language data :  Here I have developed a simple prototype version of Language detail APIs so that any website / user want to use that information that can fetch the details using that API

Return dataType is : JSON and if you are using cross domain data transfer then it should be JSONP.


$.ajax({
    url : 'http://tools.wmflabs.org/lcm-dashboard/lcmd/api/php/dataapi.php?query=jquery_ime',
    dataType : 'JSONP',
    type : 'GET',
    //data : 'query=webfonts jquery_ime' ,
    success : function(data){
        console.log(data);
    },
    error : function(data){
        console.log(data);
    })

It will return the data in JSON format.

Beautiful example of this API usage is here

http://mikipedian.blogspot.in/2013/07/i-see-rather-what-all-i-now-visualize.html