Ciantic's testing blog

iPad & iPhone targetting

2012-01-13T02:41:00.000-08:00

/* iPad [portrait + landscape] */
@media only screen and (min-device-width: 768px) and (max-device-width: 1024px) {
 .selector-01 { margin: 10px; }
 .selector-02 { margin: 10px; }
 .selector-03 { margin: 10px; }
}

/* iPhone [portrait + landscape] */
@media only screen and (max-device-width: 480px) {
 .selector-01 { margin: 10px; }
 .selector-02 { margin: 10px; }
 .selector-03 { margin: 10px; }
}

/* == iPad/iPhone [portrait + landscape] == */
@media only screen and (min-device-width: 768px) and (max-device-width: 1024px), 
@media only screen and (max-device-width: 480px) {
 .selector-01 { margin: 10px; }
 .selector-02 { margin: 10px; }
 .selector-03 { margin: 10px; }
}

Stolen from Preishablepress

Sticky Footer & Variable Height - modern CSS

2011-10-21T11:07:00.000-07:00

Copy & Pasted from http://pixelsvsbytes.com/blog/2011/09/sticky-footers-the-flexible-way/ Page was down for me, so salvaged this from Bing search cache (Google cache didn't have):

-- cut --

Step 3: All we have to do now is to put our CSS and HTML code together. Fortunately we can use the body element as .Frame, so there is no need for an extra div tag or so.
<!DOCTYPE HTML>
<html>
<head>
    <style type="text/css">
        html, body {
             height: 100%;
             margin: 0pt;
        }
        .Frame {
             display: table;
             height: 100%;
             width: 100%;
        }
        .Row {
             display: table-row;
        }
        .Row.Expand {
             height: 100%;
        }
    </style>
</head>
<body class="Frame">
    <header class="Row"><h1>Catchy header</h1></header>
    <section class="Row Expand"><h2>Awesome content</h2></section>
    <footer class="Row"><h3>Sticky footer</h3></footer>
</body>
</html>
Note: Remember to include the html5shiv workaround in your page (and define appropriate CSS styles) if you want to use HTML5 tags in IE8 and below. Or simply use div tags instead of header, section and footer.
A word on older browsers
The code above will work even with older versions of Firefox, Opera and Safari, so there is nothing to worry about here, but unfortunately Internet Explorer 7 and below don’t know anything about display:table or display:table-row, so we go the way of graceful degradation here.
The first thing we have to to is, to prevent the margins of elements inside the row from being outside of it, by adding overflow:hidden to the .Row style.
That gives us quite acceptable results, but the footer will always be outside of the window due to the 100% height of the .Frame and the .Row. The solution is to set height:100% in a way that all Internet Explorer versions below 8 won’t recognize. I’m using the (valid) html>/**/body CSS hack to accomplish this, but you might also use conditional comments if you feel better that way. However, here is the fixed CSS:
.Frame {
    display: table;
    width: 100%;
}
html>/**/body .Frame {
    height: 100%;
}
.Row {
    display: table-row;
    overflow: hidden;
}
html>/**/body .Row.Expand {
    height: 100%;
}
I guess it shouldn’t be too complicated to create a sticky footer by adjusting the height of .Row.Expand with some little Javascript.

-- paste --

WP: Turn Off Comments / Ping Backs by Default from Pages

2011-09-27T09:43:00.000-07:00

Turn Off Comments / Ping Backs by Default from Pages

Themes functions.php or yourplugin.php:

// This is valid hack as long as "wp-admin/includes/post.php"
// `get_default_post_to_edit()` keeps calling `apply_filter()` for 
// `default_content` *after* `comment_status` and `ping_status` setting.

function my_disable_pages_default_commenting($content, $post) {
    if ($post->post_type == 'page') {
        $post->comment_status = "closed";
        $post->ping_status = "closed";
    }

    return $content;
}
add_filter('default_content', 'my_disable_pages_default_commenting', 1, 2);

Snippet above turns off the check boxes only from New Pages, any existing pages must be unchecked manually.

Duplicate All Pages (in-place) in Acrobat X

2011-09-23T05:37:00.000-07:00

This is just a small JavaScript extension to Acrobat X that allowes to Duplicate all pages in-place there exists another version which used extractPages and I didn't like that behavior so I wrote own.

First elevate privileges of the JavaScript programs:

Right click on document, and choose "Page Display Preferences"
Choose "JavaScript" from the left.
Check the "Enable menu items JavaScript execution privileges".

Secondly save following snippet as duplicate.js to the %appdata%\Adobe\Acrobat\10.0\JavaScripts folder:

app.addMenuItem({
        cExec: "duplicatePagesInPlace();",
        cParent: "Edit",
        cName: "Duplicate all pages (in-place)"
});

function duplicatePagesInPlace() {
    var doc = this,
        pages = this.numPages;
    for (var i = pages - 1; i >= 0; i--) {
        doc.insertPages({ 
            cPath: doc.path, 
            nStart : i, 
            nEnd : i,
            nPage : i
        });
    }
}

Now you should be able to access the "Duplicate all pages (in-place)" under "Edit" menu item. If you can't see the item remember to restart Acrobat.

Windows 7 - Photo Viewer was really slow

2011-07-30T07:53:00.000-07:00

Windows 7 Photo Viewer was acting really slow for loading images, this fixed it:

Go to Color management (Desktop -> Screen Resolution -> Advanced Settings -> Color Management -> Color Management -> Advanced (tab) -> Change System Defaults)
Remove all profiles from all screens, and add single profile per display. (I chose sRGB virtual device mode profile.)
Check the colors in Photo Viewer if the colors are fine then you chose good profile.

That did the trick.

Where Django & PyDev fails

2011-01-22T11:17:00.000-08:00

Don't get me wrong, I like Python, PyDev and Django. But I simply hate the small problems like this:

I forget something simple, like what was the order of return tuple of get_or_create? Then I try to look the tip of the function, and what do I get? The useless **kwargs passing.

Same thing with the god damned exception handling. I don't think I've seen any official package that lists the exceptions given function may rise. All functions should have a good doc-strings that lists parameters, exceptions (including nested) and in case the return value is tuple or something non obvious the order of items in tuple.

Simply, it takes ages to open up the webpage, and browse to right place of docs. There exists a fix, but PyDev does not support it. It's the official objects.inv for Django (sphinx mapping file from keyword to URI).

Windows 7 - QoS Policies not working

2010-12-12T06:10:00.000-08:00

I've noticed that QoS Policies does not work in Windows 7.

Solution (thanks to xedoc in speedguide.net):

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\Tcpip\QoS]
"Do not use NLA"="1"

I configure them using "Group Policy Manager", followingly:

And capturing using WireShark like this:

More about this in: Wireshark Ask Forum, MSDN QoS Policy

Basename, Filename, Dirname in Batch

2010-10-21T12:59:00.000-07:00

Umm, batch scripts sucks, but here goes:

set filepath="C:\some path\having spaces.txt"

for /F "delims=" %%i in (%filepath%) do set dirname="%%~dpi" 
for /F "delims=" %%i in (%filepath%) do set filename="%%~nxi"
for /F "delims=" %%i in (%filepath%) do set basename="%%~ni"

echo %dirname%
echo %filename%
echo %basename%

I have awed this for crap many times before, now I have it here for the future.

Aero Snap vertical maximize winapi

2010-06-22T02:41:00.000-07:00

Easy way to toggle the Aero Snap vertical maximize in WinAPI:

HWND active = GetForegroundWindow();
PostMessage((HWND) active, WM_NCLBUTTONDBLCLK, HTTOP, 0);

Python binary tree traversal

2010-05-27T07:30:00.000-07:00


# Python
from itertools import chain
from collections import deque

class n(object):
    left = None
    right = None
    value = None
    
    def __init__(self, value=None, left=None, right=None):
        self.value = value
        self.left = left
        self.right = right
        
    def __call__(self, left=None, right=None):
        self.left = left
        self.right = right
        return self.value

def preorder(node):
    lefts = []
    rights = []
    
    if node.left != None:
        lefts = preorder(node.left)
        
    if node.right != None:
        rights = preorder(node.right)
        
    return chain([node], lefts, rights)
        
def inorder(node):
    lefts = []
    rights = []
    
    if node.left != None:
        lefts = inorder(node.left)
    
    if node.right != None:
        rights = inorder(node.right)
        
    return chain(lefts, [node], rights)


def postorder(node):
    lefts = []
    rights = []
    
    if node.left != None:
        lefts = postorder(node.left)
    
    if node.right != None:
        rights = postorder(node.right)
        
    return chain(lefts, rights, [node])
    
    
def levelorder(node):
    queue = deque([node])
    
    while len(queue) > 0:
        node = queue.pop() # Remove from right
        yield node
        if node.left:
            queue.appendleft(node.left)
        if node.right:
            queue.appendleft(node.right)

# Create nodes
_ = None
A = n('A')
B = n('B')
C = n('C')
D = n('D')
E = n('E')
F = n('F')
G = n('G')
H = n('H')
I = n('I')

# Link the nodes
F(B,G)
B(A,D)
D(C,E)

G(_,I)
I(H,_)

print "Pre order:"
print list(node.value for node in preorder(F))
    
print "In order:"
print list(node.value for node in inorder(F))

print "Post order:"
print list(node.value for node in postorder(F))
    
print "Level order (queue):"
print list(node.value for node in levelorder(F))

Python notes, optparse positional argument parsing

2010-02-20T10:40:00.000-08:00

    parser = optparse.OptionParser()
    try:
        (options, (first_posarg, second_posarg, )) = parser.parse_args()
    except ValueError:
        parser.error("Two positional arguments are required.")

VLC S/PDIF Stuttering fix

2010-02-06T14:16:00.000-08:00

I had this problem with VLC where all output going S/PDIF was stuttering with Windows Vista, and now that I got myself Windows 7 X64, I had to re-fix this problem.

Now I finally found the fix, so I decided to save it to here for future reference:

Preferences -> Advanced settings -> Audio -> Output modules -> Win32 waveOut extension output.

Now the AC3/DTS passthrough works without stuttering.

Python snippets, find all occurences of string

2010-01-02T07:23:00.001-08:00


>>> def find_all(string, occurrence):
...     found = 0
...
...     while True:
...         found = string.find(occurrence, found)
...         if found != -1:
...             yield found
...         else:
...             break
...
...         found += 1
...
>>>
>>> print list(find_all("awpropeoaspwtoapwroawpeoaweo", "p"))
[2, 5, 10, 15, 21]
>>>
>>> print list(find_all("Overllllapping", "ll"))
[4, 5, 6]

Note: Finds all overlapping matches.

Add your program to "Default Programs" in Windows 7

2010-01-01T07:39:00.000-08:00

I wanted to have chromium in "Default Programs", so I can associate HTTP protocol to it, here is how I did that. If you want to do same just change C:\\Program Copies\\Chromium\\chrome.exe to point your chrome.exe, note that is in two places!

For your own program just change the chromium/path etc. to something suitable for your project.

ChromiumToSetDefaults.reg:

Windows Registry Editor Version 5.00

; Infamous capabilities:

[HKEY_LOCAL_MACHINE\SOFTWARE\Chromium\Capabilities]
"ApplicationDescription"="Chromium - Beta Google Chrome"
"ApplicationIcon"="C:\\Program Copies\\Chromium\\chrome.exe,0"
"ApplicationName"="Chromium"

[HKEY_LOCAL_MACHINE\SOFTWARE\Chromium\Capabilities\FileAssociations]
".htm"="ChromiumURL"
".html"="ChromiumURL"
".shtml"="ChromiumURL"
".xht"="ChromiumURL"
".xhtml"="ChromiumURL"

[HKEY_LOCAL_MACHINE\SOFTWARE\Chromium\Capabilities\URLAssociations]
"ftp"="ChromiumURL"
"http"="ChromiumURL"
"https"="ChromiumURL"

; Register to Default Programs

[HKEY_LOCAL_MACHINE\SOFTWARE\RegisteredApplications]
"Chromium"="Software\\Chromium\\Capabilities"

; ChromiumURL HANDLER:

[HKEY_LOCAL_MACHINE\Software\Classes\ChromiumURL]
@="Chromium Document"
"FriendlyTypeName"="Chromium Document"

[HKEY_LOCAL_MACHINE\Software\Classes\ChromiumURL\shell]

[HKEY_LOCAL_MACHINE\Software\Classes\ChromiumURL\shell\open]

[HKEY_LOCAL_MACHINE\Software\Classes\ChromiumURL\shell\open\command]
@="\"C:\\Program Copies\\Chromium\\chrome.exe\" -- \"%1\""

WPF Command line arguments.

2009-10-05T14:29:00.000-07:00


App.xaml
<Application ...
Startup="App_Startup">
...

App.xaml.cs;
...
/// <summary>
/// Interaction logic for App.xaml
/// </summary>
public partial class App : Application
{
    // Storing your arguments in your type you wish:
    public static string Input = "";

    void App_Startup(object sender, StartupEventArgs e)
    {
        // Store the arguments to static public you declared:
        Input = String.Join(" ", e.Args);
    }
}
...

Window1.xaml.cs
...
    /// <summary>
    /// Create window.
    /// </summary>
    public Window1()
    {
        Console.WriteLine(App.Input); // Woohoo! Got the input...
        ...

See, MSDN, you don't have to be so damn verbose always, when little codespeak would do.

Glass only fallback, in Windows.Forms (when aero disabled / in XP)

2009-10-03T02:40:00.000-07:00

Usage: Create windows.forms application and take stuff from here:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace GlassingJustFallbackInForms
{
  public partial class FormGlassedFallback : Form
  {
      public FormGlassedFallback()
      {
          InitializeComponent();
      }

      #region WINAPI Crap:
      private bool isActivated;

      protected override void OnActivated(EventArgs e)
      {
          isActivated = true;
          base.OnActivated(e);
          this.Refresh(); // Causes flickering, any ideas?
      }

      protected override void OnDeactivate(EventArgs e)
      {
          isActivated = false;
          base.OnDeactivate(e);
          this.Refresh(); // Causes flickering, any ideas?
      }

      protected override void OnPaint(PaintEventArgs e)
      {
          IntPtr thmdata = OpenThemeData(this.Handle, "WINDOW");
          IntPtr hdc = e.Graphics.GetHdc();

          // Not very efficient, but doesn't flicker:
          RECT rect = new RECT(-2, 0, this.Width, this.Height);
          // RECT rect = new RECT(e.ClipRectangle.Left-3, e.ClipRectangle.Top, e.ClipRectangle.Right+3, e.ClipRectangle.Bottom);

          base.OnPaint(e);
          DrawThemeBackground(thmdata, hdc, WP_FRAMELEFT, isActivated ? FS_ACTIVE : FS_INACTIVE, ref rect, 0);
      }

      private const int FS_ACTIVE = 1;
      private const int FS_INACTIVE = 2;
      private const int WP_FRAMELEFT = 7;

      [DllImport("uxtheme", ExactSpelling = true)]
      private extern static Int32 DrawThemeBackground(IntPtr hTheme, IntPtr hdc, int iPartId,
         int iStateId, ref RECT pRect, int test);

      [DllImport("uxtheme", ExactSpelling = true)]
      private extern static Int32 DrawThemeBackground(IntPtr hTheme, IntPtr hdc, int iPartId,
         int iStateId, ref RECT pRect, IntPtr pClipRect);

      [DllImport("uxtheme.dll", ExactSpelling = true, CharSet = CharSet.Unicode)]
      private static extern IntPtr OpenThemeData(IntPtr hWnd, String classList);

      private const int WM_PAINT = 15;

      [Serializable, StructLayout(LayoutKind.Sequential)]
      private struct RECT
      {
          public int Left;
          public int Top;
          public int Right;
          public int Bottom;

          public RECT(int left_, int top_, int right_, int bottom_)
          {
              Left = left_;
              Top = top_;
              Right = right_;
              Bottom = bottom_;
          }
      }
      #endregion


  }


}

WPF Window with aero glass background. (C# .NET)

2009-10-02T05:15:00.000-07:00

Usage, in your Window constructor do:

 ...
public partial class Window1 : Window
{
  public Window1()
  {
      InitializeComponent();
      this.GlassBackground();
  }
}
...

Installation:
1.) Add reference "System.Drawing" to your Project (Right click on References folder on your project, and Add reference)

2.) Add to your project a class file (GlassExtensions.cs) replace the "YOURNAMESPACE" in with same namespace as in your Window1.xaml.cs, and paste this:


using System;
using System.Drawing;
using System.Windows;
using System.Windows.Media;
using System.Runtime.InteropServices;
using System.Windows.Interop;

namespace YOURNAMESPACE
{
public static class GlassingExtension
{
    /// <summary>
    /// Sets glass background to whole window.
    /// </summary>
    /// <remarks>Remember to set your WPF Window Background to "Transparent"!</remarks>
    /// <param name="win"></param>
    public static void GlassBackground(this Window win)
    {
        // Glass extend WINAPI thingie http://msdn.microsoft.com/en-us/library/aa969512%28VS.85%29.aspx form more details
        // If any of the margins is "-1" the whole window is glass!
        win.GlassBackground(-1, 0, 0, 0);
    }
    /// <summary>
    /// Sets glass background to custom margins in the window.
    /// </summary>
    /// <param name="win"></param>
    public static void GlassBackground(this Window win, int left, int right, int top, int bottom)
    {
        // Why would you read the inner workings? Why? If you need to know why...
        // DwmExtendFrameIntoClientArea http://msdn.microsoft.com/en-us/library/aa969512%28VS.85%29.aspx is the magical WINAPI call
        // rest is just crap to get its parameters populated.
        win.Loaded += delegate(object sender, RoutedEventArgs e)
        {
            try
            {
                // Obtain the window handle for WPF application
                IntPtr mainWindowPtr = new WindowInteropHelper(win).Handle;
                HwndSource mainWindowSrc = HwndSource.FromHwnd(mainWindowPtr);

                // Transparent shall be glassed!
                mainWindowSrc.CompositionTarget.BackgroundColor = System.Windows.Media.Colors.Transparent;

                // Margin for the DwmExtendFrameIntoClientArea WINAPI call.
                NonClientRegionAPI.MARGINS margins = new NonClientRegionAPI.MARGINS();
                margins.cxLeftWidth = left;
                margins.cxRightWidth = right;
                margins.cyBottomHeight = bottom;
                margins.cyTopHeight = top;

                // Glass extend WINAPI thingie http://msdn.microsoft.com/en-us/library/aa969512%28VS.85%29.aspx form more details
                int hr = NonClientRegionAPI.DwmExtendFrameIntoClientArea(mainWindowSrc.Handle, ref margins);
                if (hr < 0)
                {
                    //DwmExtendFrameIntoClientArea Failed
                } else {
                    win.Background = System.Windows.Media.Brushes.Transparent;
                }
            }
            // If not glassing capabilities (Windows XP...), paint background white.
            catch (DllNotFoundException)
            {
                Application.Current.MainWindow.Background = System.Windows.Media.Brushes.White;
            }
        };
    }

    #region WINAPI Crap, none should handle this in 21st century
    private class NonClientRegionAPI
    {
        [StructLayout(LayoutKind.Sequential)]
        public struct MARGINS
        {
            public int cxLeftWidth;      // width of left border that retains its size
            public int cxRightWidth;     // width of right border that retains its size
            public int cyTopHeight;      // height of top border that retains its size
            public int cyBottomHeight;   // height of bottom border that retains its size
        };


        [DllImport("DwmApi.dll")]
        public static extern int DwmExtendFrameIntoClientArea(
            IntPtr hwnd,
            ref MARGINS pMarInset);

    }
    #endregion
}
}

semtech2009 conference coming up!

2009-06-10T11:34:00.000-07:00

semtech2009 conference is coming up! Pointing the way for semantic web, I shall take an excerpt from their webpage HTML:

 <p>&nbsp;</p>
 <p>&nbsp;</p>
 <p>&nbsp;</p>
 <p>&nbsp;</p>
 <p>&nbsp;</p>
 <p>&nbsp;</p>
 <p>&nbsp;</p>
 <p>&nbsp;</p>
 <p>&nbsp;</p>

The glorious semantics of /dev/null I presume...

Eclipse, pydev notes, refresh errors and warnings

2009-03-27T09:55:00.001-07:00

To refresh all errors project(s) widely do:
Project (from menu) -> Clean

Very useful when refactoring classes as all files will be parsed.

Python notes, halving list

2009-03-26T10:59:00.000-07:00

Splitting list from the middle:

>>> a = [34,412,3,2,4,6,78,9,2]
>>> [a.pop(0) for alk in a]
[34, 412, 3, 2, 4]

... tricky ain't it.

Inkscape slicer

2009-02-21T18:02:00.000-08:00

Download Inkscape slice effect a.k.a. 'slicer' 0.1.1 (bugfix)

Usage:

1.) Create layer e.g. named 'slices'.
2.) Create rectangles as your slices, set their Label* (select rect and Object -> Object properties) as the output filename (without extension).
3.) Run Effects -> Export -> Slicer, specify directory where you want your slices to be saved and Apply.

What program does:

1.) It takes all rectangles you give, puts opacity 0, stroke to none.
2.) And tries to save contents inside rectangles to new files.
3.) Returns the style to original value.

Installation:

Copy these two files (slicer.py, slicer.inx) to share/extensions directory inside inkscape, do not create directory for these files.

Extensions dir in common platforms:
Ubuntu 8.10 user scope: ~/.inkscape/extensions/
Ubuntu 8.10 global scope: /usr/share/inkscape/extensions/
Windows: c:\Program Files\Inkscape\share\extensions\

Thanks

Original idea from Matt Harrison:
WARNING, Matt's version didn't work with latest Ubuntu (8.10) and Inkscape 0.46, major API differences, that was the reason I rewrote whole script with features I needed. I have no intention to ripoff Matt's effort, so I fully thank Matt for his work, and if you somehow feel that I have broken the license in Matt's file you can contact me through comments in this blog.

* Label allows all characters, where as ID allows only few. I need ability to use spaces in filenames so ID is no go. One can switch it to back to ID by changing line in slicer.py:
basename = rect_label.lstrip("#")
to
basename = rect_id

Django and Eclipse

2009-02-12T16:11:00.000-08:00

(When I have interest, I have planned to convert this to HTML, for now, let it be Plain text)
Anyone is welcome to edit, repost and/or distribute the following instructions, I just have a little wish: Provide link for this post.


Used: Eclipse Classic Ganymede (3.4.1), Django 1.0.2, PyDev

Install Pydev
=============
... TODO ...

Python interpreters (Eclipse preferences -> Pydev -> Interpreter - Python)
--------------------------------------------------------------------------
Press `New`
 Type (Ubuntu) `/usr/bin/python`
 Type (Windows) `C:\Python25\python.exe` *** Warning: not tested!
 Press `Ok`
  *IMPORTANT!*
  If you have installed Django to site-packages
   *UNCHECK* I repeat *UN*CHECK the Django from the Pythonpath list
   (Or remove from the list)
  (We are *NOT* going to use the site-packages django to this for development purposes)

Django project for Eclipse
==========================

File -> New -> Pydev project
 Project name: `Django`
 Grammar version: `2.5`
 Uncheck `Create default `src` folder and add it to the pythonpath?`
  Error about interpreter?: `Click here to configure an interpreter not listed` see above Install Pydev section


Pydev Package Explorer (the "file tree" on the left) -> Django (right click) -> Properties
 PyDev - PYTHONPATH
  Add source folder -> Choose `Django` (the project's "root" directory, for why, see (*1))

(Ubuntu) in terminal (go to your eclipse workspace directory):
 cd Django/
 svn co http://code.djangoproject.com/svn/django/tags/releases/1.0.2/ .

(Windows) Extract the django release to the Django/ dir:
 (after extraction you should have directories like `Django/django`, `Django/examples`, `Django/docs` ...)

Pydev Package Explorer (the "file tree" on the left) -> Django (right click) -> Refresh (now zip some coffee, this might take while)

All is set for Django project.

(*1) Why root? Because for instance `django` and `examples` directories in django distribution should be in pythonpath and they are in root, this is only reasonable way since we won't relocate them.


My django project:
==================

VERY IMPORTANT! DO THE DAMN `Django project for Eclipse` section FIRST! SINCE YOU WON'T GET THE AUTOCOMPLETE/*PLUGGABLE DJANGO VERSION BETWEEN APPLICATIONS* WITHOUT IT.

File -> New -> Pydev project
 Project name: `Django Poll`
 Grammar version: `2.5`
 *Check* I repeat *Check* (It should be checked by default) the `Create default `src` folder and add it to the pythonpath?`
  Error about interpreter?: This can't be, you set it up on `Django project for Eclipse`
 Click `Next`
  (In reference page)
  Check `Django` (the Django project you created earlier, remember that?)
  Press `Finish`

Django-admin.py from within Eclipse:
------------------------------------

Run -> External tools -> External tools configurations
 Left side tree: Right click `Program` -> New
  Name: `Django-admin (for project src directory)`
  Location (Ubuntu): `/bin/bash`
  Location (Windows): `c:\Windows\system32\cmd.exe`   *** Warning: Not tested
  Working directory: `${project_loc}/src`

 Environment tab:
  New (from right)
   Name: `PATH`
   Value (Ubuntu): `${env_var:PATH}:${workspace_loc:Django/django/bin}`
   Value (Windows): `${env_var:PATH};${workspace_loc:Django/django/bin}`   *** Warning: Not tested
   Click `Ok`
  New (from right)
   Name: `PYTHONPATH`
   Value (Ubuntu): `${project_loc}/src:${workspace_loc:Django/}`
   Value (Windows): `${project_loc}/src;${workspace_loc:Django/}`   *** Warning: Not tested
   Click `Ok`

  Press `Apply` and `Close` (Don't try to Run, it will (most likely) give error)

Run -> External tools -> Organize favorites
 Click `Add`
  Choose `Django-admin (for project src directory)`
  Click `Ok`
 Click `Ok`

Now in order to run this tool one must do *TWO* things:

1.) Pydev Package Explorer (the "file tree" on the left) -> Click on the `Django Poll` project (even if it is selected, just click it (to get focus on it))

2.) Run -> External tools -> `Django-admin (for project src directory)`
 *** If you get error about `Variable references empty selection: ${project_loc}`, you didn't do 1.) well enough, you *MUST* click it first and nothing else afterwards, the *project folder* in *Pydev Package Explorer* must have *focus* (being selected is not enough)!

 Console window (if not visible do Window -> Show view -> Console), type: 
  `django-admin.py`

 If all went well you should get something like: `Type django-admin.py help for usage.`
 
 Following is from official django tutorial http://docs.djangoproject.com/en/dev/intro/tutorial01/#intro-tutorial01

 Console window, type: 
  `django-admin.py startproject mysite`

PyDev Package Explorer (the tree on the left) -> `Django Poll` (right click) -> Refresh
(If all worked well you should now have directory `src/mysite` in your project)

Manage.py from within Eclipse
-----------------------------

PyDev package explorer (tree in the left) -> `Django Poll` (your project name) -> src -> manage.py (right click) -> Properties
 (You should be in dialog called `Properties for manage.py`)
 Click `New...`
  Choose `Python Run`
   (For reason unknown Eclipse doesn't prepopulate the following fields)
   Name: `Django Poll -- Custom manage.py`  (Yes you read it right, I prefixed it with project name for extra verbosity)

   Main tab (default tab):
    Project click `Browse`, choose your project `Django Poll`
    Main module click `Browse`, choose `src -> mysite -> manage.py`, click `Ok` (it should now read ${workspace_loc:Django Poll/src/mysite/manage.py} )

   Arguments tab:
    Press `Variables` (from Program arguments)
     Choose `string_prompt`
     (It should have added this `${string_prompt}`)
     Click `Ok`
   Click `Ok`
 Click `Ok`


Running test:

Locate Run button from toolbar (Green play button, with arrow downwards next to it), press the arrow -> Choose `Organize Favorites`
 Press `Add...`
  Check the `Django Poll: Custom manage.py`

Run button (press the arrow) -> `Django Poll -- Custom manage.py`
 (If all went well, you should be given prompt)
 Type: `help`
  (If all worked well, you should get long list of commands, beginning:

  `Type 'manage.py help <subcommand>' for help on a specific subcommand.`
  ...)


Lets create app:

Run button press the arrow -> `Django Poll -- Custom manage.py`
 Type: `startapp polls`

Now refresh your project directory from Pydev Package explorer (the tree in the left)
(If all worked well you should now have directory `src/mysite/polls` in your project)


Running the development server
------------------------------
Run button (press the arrow) -> `Django Poll -- Custom manage.py`
 Type: `runserver --noreload`

(You can use it without `--noreload`, but the console window is rather useless in that case, since Eclipse can't handle the refresh behaviour of `manage.py`.)


Other Eclipse preferences (optional), though highly recommended
===============================================================

More run configurations
-----------------------
Since you most likely need manage.py's commands `runserver`, `syncdb`, `reset` the most, create own run configurations for those, using similar steps as in "Manage.py from within Eclipse" section.


Tasks of project
----------------

Window -> Show view -> Tasks

Tasks (little `downward triangle` before minimize of tasks window) -> Configure contents
 Right side of the window: check `On any element in same project`
 Left side of the window: check `TODOs`

SFTP umask

2009-01-23T18:13:00.000-08:00

Do this pico /opt/sftp-server.sh

#!/bin/bash
# This is a wrapper around the sftp-server subsystem to set umask. Point
# the subsystem in /etc/ssh/sshd_config to this file. (Ubuntu/Debian
# file locations assumed)

umask 0002
exec /usr/lib/openssh/sftp-server

Remember to chmod ugo+x /opt/sftp-server.sh

Then pico /etc/ssh/sshd_config

Replace/edit this part:

# Subsystem sftp /usr/lib/openssh/sftp-server # replaced with below
Subsystem sftp /opt/sftp-server.sh

Finally remember: /etc/init.d/ssh restart

Django 1.0 custom admin two fields shown as one

2008-08-18T04:44:00.000-07:00

I needed a way to have two model fields to be shown/edited on one form field. And I came up with the following.

(CurrencyField (expense) shows and edits fields `value` and `currency` in the actual model)

from django.contrib import admin
from budget.models import Expense
from django import forms
from django.forms.util import ValidationError

class CurrencyField(forms.CharField):
   def clean(self, value):
       amount = 0
       currency = ''
       try:
           amount = float(value.split(" ")[0].strip())
       except (ValueError, TypeError), te:
           raise ValidationError('Amount is incorrect!')
      
       try:
           currency = value.split(" ")[1].strip().upper()
           if len(currency) != 3:
               raise TypeError('cur')
       except (ValueError, TypeError), te:
           raise ValidationError('Currency is incorrect! Should be three letter universal sign (e.g. EUR)')
      
       return (amount, currency)

class ExpenseForm(forms.ModelForm):
   expense = CurrencyField()
   def __init__(self, *args, **kwargs):
       super(ExpenseForm, self).__init__(*args, **kwargs)
       self.initial['expense'] = "%s %s" % (self.instance.value or '',
                                            self.instance.currency or '')
  
   def save(self, commit=True):
       self.instance.value, self.instance.currency = self.cleaned_data['expense']
       return super(ExpenseForm, self).save(commit)
  
   class Meta:
       model = Expense

# Note added:
# Expense is like this:
# class Expense(models.Model):
#     ...
#     value = models.FloatField(...)    # This contains the amount of currency, like 120.32
#     currency = models.CharField(...)  # Currency is e.g. 'USD', 'EUR' identifier of currency
#     ...

class ExpenseAdmin(admin.ModelAdmin):
   list_display = ('date', 'time', 'local_currency', 'in_euro', 'description', 'tags')
   ordering = ('date','time')
   form = ExpenseForm
   fields = ('expense', 'date', 'time', 'description', 'tags')
  
admin.site.register(Expense, ExpenseAdmin)

Django 1.0 admin custom inlines

2008-08-12T03:55:00.000-07:00


...

class ChangeSetForm(forms.ModelForm):
  dosomething = forms.BooleanField(label="Do something")
  class Meta:
      model = ChangeSet
      exclude = ('modified',) # Note: This doesn't work!
      fields = ('old_title',) # Note: This doesn't work!
    
ChangeSetInlineFormSet = inlineformset_factory(
  Article, ChangeSet,
  form = ChangeSetForm
)

class InlineChangeSet(admin.TabularInline):
  model = ChangeSet
  form = ChangeSetForm
  extra = 0
  raw_id_fields = ('editor',)
  fields = ('old_title', ) # This works.

...

Completely custom inline (without delete checkbox etc)

coming...

Lighttpd 1.4.19 compiling (Debian etch)

2008-07-16T02:05:00.000-07:00

Following explains briefly how I managed to compile and run Lighttpd.

Remember that this doesn't include init.d scripts and such, and is not great idea for production servers.

Using Debian repository installation of Lighttpd is advised, seek the older article of installing Django, I have exaplained it there.


# Dependencies:
sudo apt-get install libpcre3
sudo apt-get install libpcre3-dev
sudo apt-get install zlib1g
sudo apt-get install zlib1g-dev

# Compilation:
cd /usr/src/
sudo wget http://www.lighttpd.net/download/lighttpd-1.4.19.tar.gz
sudo tar -xvzf lighttpd-1.4.19.tar.gz
cd lighttpd-1.4.19
sudo ./configure
sudo make
sudo make install

ls -la /usr/local/sbin/ # should contain lighttpd (and lighttpd-angel)
ls -la /usr/local/lib/ # should contain whole bunch of mod_... files

# now since this is bare ass installation, 
# we need to make init scripts and such ourselves
sudo adduser lighttpd

sudo apt-get install authbind
cd /etc/authbind/byport/
sudo touch 80
sudo chown lighttpd:lighttpd 80
sudo chmod 775 80

sudo mkdir /etc/lighttpd
sudo chown lighttpd:lighttpd /etc/lighttpd/
sudo su lighttpd

mkdir /home/lighttpd/public_html
pico /home/lighttpd/public_html/index.html
<html><body>Congrats I'm running!</body><html>
# Exit the pico

pico /etc/lighttpd/lighttpd.conf
server.document-root = "/home/lighttpd/public_html"
server.port = 80
index-file.names = ( "index.html", "index.htm" )
include_shell "/etc/lighttpd/create-mime.assign.pl"
# Exit the pico

pico /etc/lighttpd/create-mime.assign.pl
#!/usr/bin/perl -w
use strict;
open MIMETYPES, "/etc/mime.types" or exit;
print "mimetype.assign = (\n";
my %extensions;
while() {
  chomp;
  s/\#.*//;
  next if /^\w*$/;
  if(/^([a-z0-9\/+-.]+)\s+((?:[a-z0-9.+-]+[ ]?)+)$/) {
    foreach(split / /, $2) {
      # mime.types can have same extension for different
      # mime types
      next if $extensions{$_};
      $extensions{$_} = 1;
      print "\".$_\" => \"$1\",\n";
    }
  }
}
print ")\n";
# Exit the pico

/etc/lighttpd/create-mime.assign.pl

# Runs the lighttpd for test ^C to exit
authbind /usr/local/sbin/lighttpd -f /etc/lighttpd/lighttpd.conf -D

exit # exits the "sudo su lighttpd"

Installation of MySQL server, MySQLdb, Flup, Lighttpd and Django (Debian etch)

2008-07-15T04:48:00.000-07:00

Note: I have not tested it as is, I was writing this afterwards from memory, so beware of the errors.

Setting up debian

# logged in as root:
apt-get install sudo
adduser joe
sudoedit /etc/sudoers
joe ALL=(ALL) ALL # added this line

# Following is done in my own user (joe):
sudo apt-get upgrade
sudo dpkg-reconfigure locales
sudo tzselect
sudo apt-get install build-essential

Now to the installing Django and others...

# Python 2.5
sudo apt-get install python2.5
sudo rm /usr/bin/python
sudo ln -s /usr/bin/python /usr/bin/python2.5

python
Python 2.5 (release25-maint, Dec  9 2006, 14:35:53)
[GCC 4.1.2 20061115 (prerelease) (Debian 4.1.1-20)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>>

# Storing downloaded/compiled python-modules:
sudo mkdir /usr/src/python-modules 


# MySQL server:
sudo apt-get install mysql-server

# MySQLdb:
# Dependencies:
sudo apt-get install libmysqlclient15-dev
sudo apt-get install python2.5-dev

cd /usr/src/python-modules/
sudo wget http://mesh.dl.sourceforge.net/sourceforge/mysql-python/MySQL-python-1.2.2.tar.gz
sudo tar -xvzf MySQL-python-1.2.2.tar.gz
cd MySQL-python-1.2.2
python setup.py build
sudo python setup.py install
cd /usr/src/python-modules/

python
>>> import MySQLdb
>>>


# Flup (for the fastcgi):
cd /usr/src/python-modules/
svn co http://svn.saddi.com/flup/trunk/ flup-svn
cd flup-svn
sudo python setup.py install
cd /usr/src/python-modules/

python
>>> import flup
>>>


# Lighttpd (1.4.19) installation using Debian unstable repository:
# TODO: Coming...

# NOTE: My installation method of Django allows to use both, svn and release
# Django as far as you always run the wanted django using env PYTHONPATH...
# Django release installation:
cd /usr/src/python-modules/
sudo wget http://www.djangoproject.com/download/0.96.2/tarball/ # this one downloads Django-0.96.2.tar.gz
sudo tar -xvzf Django-0.96.2.tar.gz

env PYTHONPATH=$PYTHONPATH:/usr/src/python-modules/Django-0.96.2 python
>>> import django
>>>

# Django svn installation:
cd /usr/src/python-modules/
sudo svn co http://code.djangoproject.com/svn/django/trunk/ Django-svn

env PYTHONPATH=$PYTHONPATH:/usr/src/python-modules/Django-svn python
>>> import django
>>>

# Django new project and fastcgi server:
sudo mkdir /var/www-domains/

sudo adduser examplecom
sudo mkdir /var/www-domains/example.com/
sudo chown examplecom:examplecom /var/www/example.com
sudo chmod +s /var/www/example.com

sudo su examplecom
cd /var/www/example.com/
mkdir public
mkdir public_media
mkdir fastcgi-servers
mkdir django-projects

# TODO: More to come...