TWiki> TWiki Web>TWikiVariables (06 Mar 2007, TWikiContributor)EditAttach

TWiki Variables

Special text strings expand on the fly to display user data or system info

TWikiVariables are text strings - %VARIABLE% or %VARIABLE{ parameter="value" }% - that expand into content whenever a topic is rendered for viewing. There are two types of variables:

  1. Preferences variables: Can be defined and changed by the user
  2. Predefined variables: Defined by the TWiki system or by Plugins (for example, the SpreadSheetPlugin introduces a %CALC{}% variable)

On this page:

Using Variables

To use a variable type its name. For example,

  • type %T% to get TIP (a preferences variable)
  • type %TOPIC% to get TWikiVariables (a predefined variable)
  • type %CALC{ "$UPPER(Text)" }% to get TEXT (a variable defined by Plugin)

Note:

  • To leave a variable unexpanded, precede it with an exclamation point, e.g. type !%TOPIC% to get %TOPIC%
  • Variables are expanded relative to the topic they are used in, not the topic they are defined in
  • Type %ALLVARIABLES% to get a full listing of all variables defined for a particular topic

Variable Names

Variable names must start with a letter. The following characters can be letters, numbers and the underscore '_'. You can use both upper-case and lower-case letters and you can mix the characteres. E.g. %MYVAR%, %MyVar%, %My2ndVar%, and %My_Var% are all valid variable names. Variables are case sensitive. %MyVAR% and %MYVAR% are not the same variable.

By convention all settings, predefined variables and variables used by plugins are always UPPER-CASE.

Preferences Variables

Unlike predefined variables, preferences variables can be defined by the user in various places.

Setting Preferences Variables

You can set variables in all the following places:
  1. local site level in TWiki.TWikiPreferences
  2. plugin topics (see TWikiPlugins)
  3. local site level in Main.TWikiPreferences
  4. user level in individual user topics in Main web
  5. web level in WebPreferences of each web
  6. topic level in topics in webs
  7. session variables (if sessions are enabled)

Settings at higher-numbered levels override settings of the same variable at lower numbered levels, unless the variable was included in the setting of FINALPREFERENCES at a lower-numbered level, in which case it is locked at the value it has at that level.

If you are setting a variable and using it in the same topic, note that TWiki reads all the variable settings from the saved version of the topic before it displays anything. This means you can use a variable anywhere in the topic, even if you set it somewhere inconspicuous near the end. But beware: it also means that if you change the setting of a variable you are using in the same topic, Preview will show the wrong thing, and you must Save the topic to see it correctly.

The syntax for setting Variables is the same anywhere in TWiki (on its own TWiki bullet line, including nested bullets):
[multiple of 3 spaces] * [space] Set [space] VARIABLENAME [space] = [space] value

Examples:
  • Set VARIABLENAME = value
    • Set VARIABLENAME = value
Spaces between the = sign and the value will be ignored. You can split a value over several lines by indenting following lines with spaces - as long as you don't try to use * as the first character on the following line.
Example: 
   * Set VARIABLENAME = value starts here
     and continues here

Whatever you include in your Variable will be expanded on display, exactly as if it had been entered directly.

Example: Create a custom logo variable
  • To place a logo anywhere in a web by typing %MYLOGO%, define the Variable on the web's WebPreferences topic, and upload a logo file, ex: mylogo.gif. You can upload by attaching the file to WebPreferences, or, to avoid clutter, to any other topic in the same web, e.g. LogoTopic. Sample variable setting in WebPreferences:
    • Set MYLOGO = %PUBURL%/%WEB%/LogoTopic/mylogo.gif

You can also set preferences variables on a topic by clicking the link Edit topic preference settings under More topic actions. Preferences set in this manner are not visible in the topic text, but take effect nevertheless.

Access Control Variables

These are special types of preferences variables to control access to content. TWikiAccessControl explains these security settings in detail.

Local values for variables

Certain topics (a users home topic, web site and default preferences topics) have a problem; variables defined in those topics can have two meanings. For example, consider a user topic. A user may want to use a double-height edit box when they are editing their home topic - but only when editing their home topic. The rest of the time, they want to have a normal edit box. This separation is achieved using Local in place of Set in the variable definition. For example, if the user sets the following in their home topic: 
   * Set EDITBOXHEIGHT = 10
   * Local EDITBOXHEIGHT = 20
Then when they are editing any other topic, they will get a 10 high edit box. However when they are editing their home topic, they will get a 20 high edit box. Local can be used wherever a preference needs to take a different value depending on where the current operation is being performed.

Use this powerful feature with great care! %ALLVARIABLES% can be used to get a listing of the values of all variables in their evaluation order, so you can see variable scope if you get confused.

Frequently Used Preferences Variables

The following preferences variables are frequently used. They are defined in TWikiPreferences#Miscellaneous_Settings:

  • %BR% - line break
  • %BULLET% - bullet sign
  • %BB% - line break and bullet combined
  • %BB2% - indented line break and bullet
  • %RED% text %ENDCOLOR% - colored text (also %YELLOW%, %ORANGE%, %PINK%, %PURPLE%, %TEAL%, %NAVY%, %BLUE%, %AQUA%, %LIME%, %GREEN%, %OLIVE%, %MAROON%, %BROWN%, %BLACK%, %GRAY%, %SILVER%, %WHITE%)
  • %H% - HELP Help icon
  • %I% - IDEA! Idea icon
  • %M% - MOVED TO... Moved to icon
  • %N% - NEW New icon
  • %P% - REFACTOR Refactor icon
  • %Q% - QUESTION? Question icon
  • %S% - PICK Pick icon
  • %T% - TIP Tip icon
  • %U% - UPDATED Updated icon
  • %X% - ALERT! Alert icon
  • %Y% - DONE Done icon

There are additional useful preferences variables defined in TWikiPreferences, in Main.TWikiPreferences, and in WebPreferences of every web.

Predefined Variables

Most predefined variables return values that were either set in the configuration when TWiki was installed, or taken from server info (such as current username, or date and time). Some, like %SEARCH%, are powerful and general tools.

  • ALERT! Predefined variables can be overridden by preferences variables (except TOPIC and WEB)
  • ALERT! Plugins may extend the set of predefined variables (see individual Plugins topics for details)
  • TIP Take the time to thoroughly read through ALL preference variables. If you actively configure your site, review variables periodically. They cover a wide range of functions, and it can be easy to miss the one perfect variable for something you have in mind. For example, see %INCLUDINGTOPIC%, %INCLUDE%, and the mighty %SEARCH%.

This version of TWiki - TWiki-4.2.3, Wed, 06 Aug 2008, build 17396 - predefines the following variables:

ACTIVATEDPLUGINS -- list of currently activated plugins

ALLVARIABLES -- list of currently defined TWikiVariables

  • Syntax: %ALLVARIABLES%
  • Expands to: a table showing all defined TWikiVariables in the current context

AQUA -- start aqua colored text

  • AQUA is one of the rendering shortcut settings predefined in TWikiPreferences. See the section rendering shortcut settings in that topic for a complete list of colors.
  • Syntax: %AQUA% aqua text %ENDCOLOR%
  • Expands to: aqua text
  • Note: %<color>% text must end with %ENDCOLOR%. If you want to switch from one color to another one you first need to end the active color with %ENDCOLOR%, e.g. write %RED% some text %ENDCOLOR% %GREEN% more text %ENDCOLOR%.
  • Related: ENDCOLOR, TWikiPreferences, StandardColors

ATTACHURL -- full URL for attachments in the current topic

ATTACHURLPATH -- path of the attachment URL of the current topic

AUTHREALM -- authentication realm

BASETOPIC -- base topic where an INCLUDE started

  • The name of the topic where a single or nested INCLUDE started - same as %TOPIC% if there is no INCLUDE
  • Syntax: %BASETOPIC%
  • Related: BASEWEB, INCLUDINGTOPIC, INCLUDE, TOPIC

BASEWEB -- base web where an INCLUDE started

  • The web name where the includes started, e.g. the web of the first topic of nested includes. Same as %WEB% in case there is no include.
  • Syntax: %BASEWEB%
  • Related: BASETOPIC, INCLUDINGWEB, INCLUDE, WEB

BB -- bullet with line break

BB2 -- level 2 bullet with line break

BB3 -- level 3 bullet with line break

BB4 -- level 4 bullet with line break

BLACK -- start black colored text

  • BLACK is one of the rendering shortcut settings predefined in TWikiPreferences. See the section rendering shortcut settings in that topic for a complete list of colors.
  • Syntax: %BLACK% black text %ENDCOLOR%
  • Expands to: black text
  • Note: %<color>% text must end with %ENDCOLOR%. If you want to switch from one color to another one you first need to end the active color with %ENDCOLOR%, e.g. write %RED% some text %ENDCOLOR% %GREEN% more text %ENDCOLOR%.
  • Related: ENDCOLOR, TWikiPreferences, StandardColors

BLUE -- start blue colored text

  • BLUE is one of the rendering shortcut settings predefined in TWikiPreferences. See the section rendering shortcut settings in that topic for a complete list of colors.
  • Syntax: %BLUE% blue text %ENDCOLOR%
  • Expands to: blue text
  • Note: %<color>% text must end with %ENDCOLOR%. If you want to switch from one color to another one you first need to end the active color with %ENDCOLOR%, e.g. write %RED% some text %ENDCOLOR% %GREEN% more text %ENDCOLOR%.
  • Related: ENDCOLOR, TWikiPreferences, StandardColors

BR -- line break

BROWN -- start brown colored text

  • BROWN is one of the rendering shortcut settings predefined in TWikiPreferences. See the section rendering shortcut settings in that topic for a complete list of colors.
  • Syntax: %BROWN% brown text %ENDCOLOR%
  • Expands to: brown text
  • Note: %<color>% text must end with %ENDCOLOR%. If you want to switch from one color to another one you first need to end the active color with %ENDCOLOR%, e.g. write %RED% some text %ENDCOLOR% %GREEN% more text %ENDCOLOR%.
  • Related: ENDCOLOR, TWikiPreferences, StandardColors

BULLET -- bullet character

CALC{"formula"} -- add spreadsheet calculations to tables and outside tables

  • The %CALC{"formula"}% variable is handled by the SpreadSheetPlugin. There are around 80 formulae, such as $ABS(), $EXACT(), $EXISTS(), $GET()/$SET(), $IF(), $LOG(), $LOWER(), $PERCENTILE(), $TIME(), $VALUE().
  • Syntax: %CALC{"formula"}%
  • Examples:
    • %CALC{"$SUM($ABOVE())"}% returns the sum of all cells above the current cell
    • %CALC{"$EXISTS(Web.SomeTopic)"}% returns 1 if the topic exists
    • %CALC{"$UPPER(Collaboration)"}% returns COLLABORATION
  • Related: IF, SpreadSheetPlugin

CARET -- caret symbol

COMMENT{ attributes } -- insert an edit box into the topic to easily add comments.

  • A %COMMENT% without parameters shows a simple text box.
  • The following standard attributes are recognized
    Name Description Default
    type This is the name of the template to use for this comment. Comment templates are defined in a TWiki template - see Customisation, below. If this attribute is not defined, the type is whatever is defined by COMMENTPLUGIN_DEFAULT_TYPE, either in this topic or in your WebPreferences. below
    default Default text to put into the textarea of the prompt.  
    target Name of the topic to add the comment to the current topic
    location Regular expression specifying the comment location in the target topic. Read carefully the CommentPlugin documentation!  
    mode For compatibility with older versions only, synonymous with type  
    nonotify Set to "on" to disable change notification for target topics off
    noform Set to "on" to disable the automatic form that encloses your comment block - remember to insert <form> tags yourself! See CommentPluginExamples#noform for an example. off
    nopost Set to "on" to disable insertion of the posted text into the topic. off
    remove Set to "on" to remove the comment prompt after the first time it is clicked. off
    button Button label text Add comment

DATE -- signature format date

DISPLAYTIME -- display date and time

  • Syntax: %DISPLAYTIME%
  • Expands to: 21 Nov 2008 - 21:12
  • Date part of the format is displayed as defined by the {DefaultDateFormat} in configure. The time is shown as hh:mm (24 hour clock)
  • Related: DISPLAYTIME{"format"}, GMTIME, SERVERTIME

DISPLAYTIME{"format"} -- formatted display time

  • Formatted time - either GMT or Local server time, depending on {DisplayTimeValues} setting in configure. Same format qualifiers as %GMTIME%
  • Syntax: %DISPLAYTIME{"format"}%
  • Example: %DISPLAYTIME{"$hou:$min"}% expands to 21:12
  • Related: DISPLAYTIME, GMTIME, SERVERTIME

EDITACTION -- Selects an edit template

  • EDITACTION defined in a topic or preference setting will define the use of an editaction template instead of the standard edit. If EDITACTION is defined as text, then hide the form. If EDITACTION is defined as form hide the normal text area and only edit the form.
  • Syntax: Set EDITACTION = text|form
  • Expands to: %EDITACTION%
  • Related: TWikiScripts#edit
  • ALERT! When EDITACTION is defined as text or form the Edit and Edit Raw buttons simply add ;action=text or ;action=form to the URL for the edit script. If you have defined EDITACTION in a topic setting or preference setting you can still edit the topic content or the form by removing the ;action=form or ;action=text from the edit URL in the browser and reload.

EDITTABLE{ attributes } -- edit TWiki tables using edit fields and other input fields

  • The %EDITTABLE{}% variable is handled by the EditTablePlugin
  • Syntax: %EDITTABLE{ attributes }%

  • Supported attributes:
    Attribute Comment Default
    header Specify the header format of a new table like "|*Food*|*Drink*|". Useful to start a table with only a button (no header)
    format The format of one column when editing the table. A cell can be a text input field, or any of these edit field types:

    • Text input field (1 line):
      | text, <size>, <initial value> |

    • Textarea input field:
      | textarea, <rows>x<columns>, <initial value> |

    • Drop down box:
      | select, <size>, <option 1>, <option 2>, etc* |
      * only one item can be selected

    • Radio buttons:
      | radio, <size*>, <option 1>, <option 2>, etc |
      * size indicates the number of buttons per line in edit mode

    • Checkboxes:
      | checkbox, <size*>, <option 1>, <option 2>, etc |
      * size indicates the number of checkboxes per line in edit mode

    • Fixed label:
      | label, 0, <label text> |

    • Row number:
      | row, <offset> |

    • Date:
      | date, <size>, <initial value>, <DHTML date format> | (see Date Field Type)     		"text, 16"
    for all cells
    changerows Rows can be added and removed if "on"
    Rows can be added but not removed if "add"
    Rows cannot be added or removed if "off"     		CHANGEROWS
    plugin setting
    quietsave Quiet Save button is shown if "on", hidden if "off" QUIETSAVE
    plugin setting
    include Other topic defining the EDITTABLE parameters. The first %EDITTABLE% in the topic is used. This is useful if you have many topics with the same table format and you want to update the format in one place. (none)
    helptopic Topic name containing help text shown below the table when editing a table. The %STARTINCLUDE% and %STOPINCLUDE% variables can be used in the topic to specify what is shown. (no help text)
    headerislabel Table header cells are read-only (labels) if "on"; header cells can be edited if "off" or "0" "on"
    editbutton Set edit button text, e.g. "Edit this table"; set button image with alt text, e.g. "Edit table, %PUBURL%/%TWIKIWEB%/TWikiDocGraphics/edittopic.gif"; hide edit button at the end of the table with "hide" (Note: Button is automatically hidden if an edit button is present in a cell) EDITBUTTON
    plugin setting
    javascriptinterface Use javascript to directly move and delete row without page refresh. Enable with "on", disable with "off". JAVASCRIPTINTERFACE
    plugin setting

  • Example:
    %EDITTABLE{ format="| text, 20 | select, 1, one, two, three |" changerows="on" }%
    | *Name* | *Type* |
    | Foo | two |
  • Related: See EditTablePlugin for more details

ENCODE{"string"} -- encodes a string to HTML entities

  • Encode "special" characters to HTML numeric entities. Encoded characters are:
    • all non-printable ASCII characters below space, except newline ("\n") and linefeed ("\r")
    • HTML special characters "<", ">", "&", single quote (') and double quote (")
    • TWiki special characters "%", "[", "]", "@", "_", "*", "=" and "|"
  • Syntax: %ENCODE{"string"}%
  • Supported parameters:
    Parameter: Description: Default:
    "string" String to encode required (can be empty)
    type="entity" Encode special characters into HTML entities, like a double quote into &#034;. Does not encode \n or \r. type="url"
    type="html" As type="entity" except it also encodes \n and \r type="url"
    type="quotes" Escape double quotes with backslashes (\"), does not change other characters type="url"
    type="url" Encode special characters for URL parameter use, like a double quote into %22 (this is the default)
  • Example: %ENCODE{"spaced name"}% expands to spaced%20name
  • ALERT! Note: Values of HTML input fields must be entity encoded.
    Example: <input type="text" name="address" value="%ENCODE{ "any text" type="entity" }%" />
  • ALERT! Note: Double quotes in strings must be escaped when passed into other TWiki variables.
    Example: %SEARCH{ "%ENCODE{ "string with "quotes"" type="quotes" }%" noheader="on" }%

ENDCOLOR -- end colored text

ENDSECTION{"name"} -- marks the end of a named section within a topic

  • Syntax: %ENDSECTION{"name"}%
  • Syntax: %ENDSECTION{type="include"}%
  • Supported parameter:
    Parameter: Description:
    "name" Name of the section.
    type="..." Type of the section being terminated; supported types "section", "include", "templateonly".
  • If the STARTSECTION is named, the corresponding ENDSECTION must also be named with the same name. If the STARTSECTION specifies a type, then the corresponding ENDSECTION must also specify the same type. If the section is unnamed, ENDSECTION will match with the nearest unnamed %STARTSECTION% of the same type above it.
  • Related: STARTSECTION

ENV{"varname"} -- inspect the value of an environment variable

  • Returns the current value of the environment variable in the CGI (Common Gateway Interface) environment. This is the environment that the TWiki scripts run in on the web server.
  • Note: For security reasons, only those variables whose names match the regular expression in {AccessibleENV} in the Security Settings/Miscellaneous section of configure can be displayed. Any other variable will just be shown as an empty string, irrespective of its real value.
  • Example: %ENV{MOD_PERL}% displays as: not set
  • If a variable is undefined (as against being set to the empty string) it will be returned as not set.
  • Related: HTTP_HOST, REMOTE_ADDR, REMOTE_PORT, REMOTE_USER

FAILEDPLUGINS -- debugging for plugins that failed to load, and handler list

FORMFIELD{"fieldname"} -- renders a field in the form attached to some topic

  • Syntax: %FORMFIELD{"fieldname"}%
  • Supported parameters:
    Parameter: Description: Default:
    "fieldname" The name of a TWiki form field required
    topic="..." Topic where form data is located. May be of the form Web.TopicName Current topic
    format="..." Format string. $value expands to the field value, and $title expands to the fieldname (also expands $name, $attributes, $type, $size and $definingTopic) "$value"
    default="..." Text shown when no value is defined for the field ""
    alttext="..." Text shown when field is not found in the form ""
  • Example: %FORMFIELD{"ProjectName" topic="Projects.SushiProject" default="(not set)" alttext="ProjectName field found"}%
  • Related: SEARCH

GMTIME -- GM time

GMTIME{"format"} -- formatted GM time

  • Syntax: %GMTIME{"format"}%
  • Supported variables:
    Variable: Unit: Example
    $seconds seconds 59
    $minutes minutes 59
    $hours hours 23
    $day day of month 31
    $wday day of the Week (Sun, Mon, Tue, Wed, Thu, Fri, Sat) Thu
    $dow day of the week (Sun = 0) 2
    $week number of week in year (ISO 8601) 34
    $month short name of month Dec
    $mo 2 digit month 12
    $year 4 digit year 1999
    $ye 2 digit year 99
    $tz either "GMT" (if set to gmtime), or "Local" (if set to servertime) GMT
    $iso ISO format timestamp 2008-11-21T21:12:37Z
    $rcs RCS format timestamp 2008/11/21 21:12:37
    $http E-mail & http format timestamp Fri, 21 Nov 2008 21:12:37 GMT
    $epoch Number of seconds since 00:00 on 1st January, 1970 1227301957
  • Variables can be shortened to 3 characters
  • Example: %GMTIME{"$day $month, $year - $hour:$min:$sec"}% expands to 21 Nov, 2008 - 21:12:37
  • ALERT! Note: When used in a template topic, this variable will be expanded when the template is used to create a new topic. See TWikiTemplates#TemplateTopicsVars for details.
  • Related: DISPLAYTIME, GMTIME, REVINFO, SERVERTIME

GRAY -- start gray colored text

  • GRAY is one of the rendering shortcut settings predefined in TWikiPreferences. See the section rendering shortcut settings in that topic for a complete list of colors.
  • Syntax: %GRAY% gray text %ENDCOLOR%
  • Expands to: gray text
  • Note: %<color>% text must end with %ENDCOLOR%. If you want to switch from one color to another one you first need to end the active color with %ENDCOLOR%, e.g. write %RED% some text %ENDCOLOR% %GREEN% more text %ENDCOLOR%.
  • Related: ENDCOLOR, TWikiPreferences, StandardColors

GREEN -- start green colored text

  • GREEN is one of the rendering shortcut settings predefined in TWikiPreferences. See the section rendering shortcut settings in that topic for a complete list of colors.
  • Syntax: %GREEN% green text %ENDCOLOR%
  • Expands to: green text
  • Note: %<color>% text must end with %ENDCOLOR%. If you want to switch from one color to another one you first need to end the active color with %ENDCOLOR%, e.g. write %RED% some text %ENDCOLOR% %GREEN% more text %ENDCOLOR%.
  • Related: ENDCOLOR, TWikiPreferences, StandardColors

GROUPS -- a formatted list of groups

H -- help icon

HOMETOPIC -- home topic in each web

HTTP -- get HTTP headers

  • Called with the name of an HTTP header field, returns its value. Capitalization and the use of hyphens versus underscores are not significant.
  • Syntax: %HTTP%
  • Syntax: %HTTP{"Header-name"}%
  • Examples:
    %HTTP%  
    %HTTP{"Accept-language"}% en-us,en;q=0.5
    %HTTP{"User-Agent"}% CCBot/1.0 (+http://www.commoncrawl.org/bot.html)
  • ALERT! Note: You can see the HTTP headers your browser sends to the server on a number of sites e.g. http://www.ericgiguere.com/tools/http-header-viewer.html
  • Related: HTTPS, REMOTE_ADDR, REMOTE_PORT, REMOTE_USER

HTTP_HOST -- environment variable

HTTPS -- get HTTPS headers

  • The same as %HTTP% but operates on the HTTPS environment variables present when the SSL protocol is in effect. Can be used to determine whether SSL is turned on.
  • Syntax: %HTTPS%
  • Syntax: %HTTPS{"Header-name"}%
  • Related: HTTP, REMOTE_ADDR, REMOTE_PORT, REMOTE_USER

I -- idea icon

ICON{"name"} -- small documentation graphic or icon of common attachment types

  • Generates the HTML img tag of a small graphic image attached to TWikiDocGraphics. Images typically have a 16x16 pixel size. You can select a specific image by name, or you can give a full filename, in which case the type of the file will be used to select one of a collection of common file type icons.
  • Syntax: %ICON{"name"}%
  • Examples:
    • %ICON{"flag-gray"}% returns flag-gray
    • %ICON{"pdf"}% returns pdf
    • %ICON{"smile.pdf"}% returns pdf
    • %ICON{"/dont/you/dare/smile.pdf"}% returns pdf
    • %ICON{"http://twiki.org/doc/xhtml.xsl"}% returns xsl
  • Graphic samples: arrowbright arrowbright, bubble bubble, choice-yes choice-yes, hand hand
  • File type samples: bmp bmp, doc doc, gif gif, hlp hlp, html html, wav mp3, pdf pdf, ppt ppt, txt txt, xls xls, xml xml, zip zip
  • Related: ICONURL, ICONURLPATH, TWikiPreferences, FileAttachments, TWikiDocGraphics

ICONURL{"name"} -- URL of small documentation graphic or icon

  • Generates the full URL of a TWikiDocGraphics image, which TWiki renders as an image. The related %ICON{"name"}% generates the full HTML img tag. Specify image name or full filename (see ICON for details on filenames.)
  • Syntax: %ICONURL{"name"}%
  • Examples:
    • %ICONURL{"arrowbright"}% returns http://wiki.issuecrawler.net/pub/TWiki/TWikiDocGraphics/arrowbright.gif
    • %ICONURL{"novel.pdf"}% returns http://wiki.issuecrawler.net/pub/TWiki/TWikiDocGraphics/pdf.gif
    • %ICONURL{"/queen/boheme.mp3"}% returns http://wiki.issuecrawler.net/pub/TWiki/TWikiDocGraphics/mp3.gif
  • Related: ICONURLPATH, ICON, TWikiPreferences, FileAttachments, TWikiDocGraphics

ICONURLPATH{"name"} -- URL path of small documentation graphic or icon

  • Generates the URL path of a TWikiDocGraphics image, typically used in an HTML img tag. Specify image name or full filename (see ICON for details on filenames.)
  • Syntax: %ICONURLPATH{"name"}%
  • Examples:
    • %ICONURLPATH{"locktopic"}% returns /pub/TWiki/TWikiDocGraphics/locktopic.gif
    • %ICONURLPATH{"eggysmell.xml"}% returns /pub/TWiki/TWikiDocGraphics/xml.gif
    • %ICONURLPATH{"/doc/xhtml.xsl"}% returns /pub/TWiki/TWikiDocGraphics/xsl.gif
  • Related: ICONURL, ICON, TWikiPreferences, FileAttachments, TWikiDocGraphics

IF{"condition" ...} -- simple conditionals

  • Evaluate a condition and show one text or another based on the result. See details in IfStatements
  • Syntax: %IF{"CONDITION" then="THEN" else="ELSE"}% shows "THEN" if "CONDITION" evaluates to TRUE, otherwise "ELSE" will be shown
  • Example: %IF{"defined FUNFACTOR" then="FUNFACTOR is defined" else="FUNFACTOR is not defined"}% renders as FUNFACTOR is not defined
  • Related: $IF() of SpreadSheetPlugin

INCLUDE{"page"} -- include other topic or web page

  • Syntax: %INCLUDE{"page" ...}%
  • Supported parameters:
    Parameter: Description: Default:
    "SomeTopic" The name of a topic located in the current web, i.e. %INCLUDE{"WebNotify"}%  
    "Web.Topic" A topic in another web, i.e. %INCLUDE{"TWiki.SiteMap"}%  
    "http://..." A full qualified URL, i.e. %INCLUDE{"http://twiki.org:80/index.html"}%. Supported content types are text/html and text/plain.
    IDEA! if the URL resolves to an attachment file on the server this will automatically translate to a server-side include.     		 
    pattern="..." Include a subset of a topic or a web page. Specify a RegularExpression that scans from start ('^') to end and contains the text you want to keep in parenthesis, e.g., pattern="^.*?(from here.*?to here).*". IncludeTopicsAndWebPages has more. none
    rev="2" Include a previous topic revision; N/A for URLs top revision
    raw="on" When a page is included, normally TWiki will process it, doing the following: 1) Alter relative links to point back to originating host, 2) Remove some basic HTML tags (html, head, body, script) and finally 3) Remove newlines from HTML tags spanning multiple lines. If you prefer to include exactly what is in the source of the originating page set this to on.
    raw="on" is short for disableremoveheaders="on", disableremovescript="on", disableremovebody="on", disablecompresstags="on" and disablerewriteurls="on".     		disabled
    literal="on" While using the raw option will indeed include the raw content, the included content will still be processed and rendered like regular topic content. To disable parsing of the included content, set the literal option to "on". disabled
    disableremoveheaders="on" Bypass stripping headers from included HTML (everything until first </head> tag) disabled
    disableremovescript="on" Bypass stripping all <script> tags from included HTML disabled
    disableremovebody="on" Bypass stripping the </body> tag and everything around over and below it disabled
    disablecompresstags="on" Bypass replacing newlines in HTML tags with spaces. This compression step rewrites unmatched <'s into &lt; entities unless bypassed disabled
    disablerewriteurls="on" Bypass rewriting relative URLs into absolute ones disabled
    warn="off" Warn if topic include fails: Fail silently (if off); output default warning (if set to on); else, output specific text (use $topic for topic name) %INCLUDEWARNING% preferences setting
    section="name" Includes only the specified named section, as defined in the included topic by the STARTSECTION and ENDSECTION variables. Nothing is shown if the named section does not exists. section="" is equivalent to not specifying a section  
    PARONE="val 1"
      PARTWO="val 2"         		Any other parameter will be defined as a variable within the scope of the included topic. The example parameters on the left will result in %PARONE% and %PARTWO% being defined within the included topic.  
  • Note: JavaScript in included webpages is filtered out as a security precaution per default (disable filter with disableremovescript parameter)
  • Examples: See IncludeTopicsAndWebPages
  • Related: BASETOPIC, BASEWEB, INCLUDINGTOPIC,