Really cool! Congratulations for this work and exaplanation! 2009/6/3 sgtpep <danil.m...@gmail.com>: > > Unfortunately I have no expirience in screencasting, and my English is > buggy. > > Debugging/logging tool is very useful thing for web development. I > really like this one in Symfony framework (it is included to Symfony > and made with JavaScript, screenshot - > http://www.symfony-project.org/blog/2008/08/27/new-in-symfony-1-2-customize-the-web-debug-toolbar). > For Django there is third-party module Django Debug Toolbar (http:// > rob.cogit8.org/blog/2008/Sep/19/introducing-django-debug-toolbar/). > > I think the most valuable things that this type of tools can show for > developer are: accessible report to server-side logs pre request, info > about queries executed during request and maybe some cache stats and > variables list. > > Firebug (http://getfirebug.com/) is the most popular Firefox extension > for web developent, very handy and well-built. It implements > JavaScript console, DOM traversing, JS-debugging and lot more. FirePHP > (http://www.firephp.org/) is another extension that uses Firebug > interface and resources and therefore requires Firebug for work. You > can see demo here (Firefox with both extensions required, open and > enable Firebug console to see output) - > http://www.firephp.org/Examples/PHPArchitect/. > In two words, FirePHP allows you to output log messages that you > passed from PHP code, displays executed db queries, stack trace of > exceptions, etc. It requires of using PHP class FirePHPCore/ > FirePHP.class.php. Firepy (documentation and screenshot - > http://code.google.com/p/firepy/wiki/Documentation) is the > implementation for Python of the server-side FirePHP library, but it > uses the same Firefox extension (FirePHP). And it includes Middleware > for using with Django, but you can easily adopt it for any Python > framework. > > How-to for using FirePHP with web2py: > 1) Open Firefox, install Firebug, FirePHP addons: > https://addons.mozilla.org/ru/firefox/addon/1843, > https://addons.mozilla.org/en-US/firefox/addon/6149. Restart browser. > 2) Download http://www.box.net/shared/dtm0dhgze9 and extract 'firepy' > folder. > 3) Open directory with your current web2py application, and copy > 'firepy' folder into 'modules' directory of application. > 4) Edit first file in 'models' folder in your application (via web- or > desktop-editor). Place these lines in top of the file: > > import sys > sys.path += ['applications/%s/modules' % request.application] > from firepy.web2py import start_firepy > start_firepy(globals()) > > 5) Edit some controller file and add this line to some controller > function: logging.debug([1, {"asdf":(123, 2, "3")}, "3"]) > 6) Click on bug icon on bottom status line of Firefox. This will bring > up panel. Check the checkbox "Console" and click "Apply settings". > Ensure that tab "Console" is showing. > 7) Navigate from browser to this application/controller/function. And > now you should see your logging output in console ([1, {"asdf":(123, > 2, "3")}, "3"]). If controller executes some db queries, then console > will contain some info about them (sample screenshot > http://firepy.googlecode.com/files/firepy.png). This is very > interesting to know raw SQL-queries (especially for eduction, and for > finding redundant or duplicating queries). > > Notice: Logs shows only if you are autorized in admin application. > This check prevents from showing debugging logs for non- > administrators. > > One disadvantage of this way is that it requires Firefox. But if you > open your site in other browsers no errors will occur (logging info > passes via HTTP headers). One possible way to support other browsers > is to use Firebug Lite (pure JS implementation of extension) for them > (http://getfirebug.com/lite.html) and modify or extend its code for > adding FirePHP functionality. > > BTW, web2py is great, I really was charmed with it. It is most pytonic > web framework and more flexible than most of them (I think it beats > Django as well). Such debugging possibility will be a nice addition > for it.
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