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Debugger Console



Also see {debug} which can be used in Smarty Templates as described in template tricks.

General Description

For a TikiAdmin this tool is a great first step towards making Tiki as easy to debug as it is to extend and modify!

Overview

When processing a page, your code can send output to the debug console with commands such as $debugger->msg("your message"). This writes the output to the debugconsole which you can then view by displaying the console.

When executing debugging commands, the page is re-loaded with the output of the debugging commands written to the debugconsole. This may pose problems for pages which are processing user input, uploading files, or that crash and do not return.

The debug console is embedded within a div class="debugconsole" id="debugconsole" which is turned on by clicking on the link to toggle the console. Careful inspection will note that the footer.tpl includes tiki-debug_console.php which handles the processing after most of the rest of the page has already executed.

General Notes
  • Enable debugger console by selecting checkbox on Admin -> Features -> Administration Features.
  • Debugger can be extended with commands and/or interface extensions (tabs).
  • Every command in debugger is a PHP class.
  • Sources lib/debug
  • Search for debug-command_*.php it is filenames mask... for debugger commands
  • one command == one class == one file


Key Function and sub-features

General info

*help  	Display list of commands or help for specified command (help print for example)
*tikitables 	Show list of Tiki tables in DB schema
*features 	Show features on/off state
*perm 	        Show current permissions in a convenient way
*print 	Print PHP variable. Indexes are OK.
*slist 	Display list of Smarty variables. Better to specify partial name or 
               very long list of vars will return.
*sprint 	Print Smarty variable
*watch 	Manage variables watch list
*sql 	        Exec SQL query on Tiki DB


How to extend debugger

Look for example skeleton lib/debug/debugger-command_test.php

Related Links


Typical Uses

Debug messages on console

It is possible to print debug info to special debug tab called 'Debug messages' during page generation. It is possible from PHP and Smarty as well.

Dump Smarty variable from template:
{var_dump var=left_modules}

Dump Smarty variable from template using modificator:
{$description|str_replace:"\n":"<br />"|dbg}

Of couse modificator dbg can be used more than once:

{$description|dbg|str_replace:"\n":"<br />"|dbg}

... so you will get 2 messages before and after modification of $description.

// PHP code
global $debugger;
// Print message
$debugger->msg('Value of $myvar = "'.$myvar.'"');
// Print variable
$debugger->var_dump('$myvar');


Case Studies


Bugs

Non command-line commands should not print help. — Fixed in CVS.

Support Requests

We need more examples of the commands that are being passed here...

TikiTeam

zaufi

For more information

lookup sources lib/debug

alias

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Each feature in Tiki has a wiki page which regroups all the bugs, requests for enhancements, etc. It is somewhat a form of wiki-based project management. You can also express your interest in a feature by adding it to your profile. You can also try out the Dynamic filter.




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