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CHILDREN -- find children of a topic

CONTENTMODE{web="WEB"} -- content mode

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.
  • Category: SystemInformationVariables

MDREPO -- retrieve data from metadata repository

  • Attention: This variable works only if MetadataRepository is in use. Otherwise, it always returns a zero length string.
  • This retrieves data from the specified metadata repository table.
  • Syntax: %MDREPO{ "table" ...}% (generic form), %MDREPO{ web="..." ...}% (web specific form)
  • Parameters (generic form without web="..." parameter):
    Parameter Description Default
    "..." Specify the table to retrieve This or below is required
    table="..." (Alternative to above) This or above is required
    separator="..." The separator string of records "$n" (new line)
    format="..." Format of one record. It may contain the following items. In addtion, the standard special tokens are handled accordingly.
    Item Description
    $_ or $_() the record ID
    $__ or $__() The record value in the following format:
    $marker or $marker() Expands to marker for the item matching selection only
    $_FILED_NAME or $_FIELD_NAME() Please be noted that you need to put _ (underscore) in front of a field name. $_FIELD_NAME$ yields the value of the specified field. If the specified field does not exist in the record, it returns the null string ("").
    ?FIELD_NAME?IF_FIELD_HAS_VALUE? If the specified field has value and it's neither 0 nor the null string (""), it's evaluated as IF_FIELD_HAS_VALUE. Otherwise, it's evaluated as the null string. This is like q/.../ in Perl. A non-word character following ?FIELD_NAME becomes the terminator; i.e. you can write: ?FIELD_NAME:IF_TRUE:
    Specifically, the following characters can be used as the delimiter: ! # % ' / : ? @ ^ ` | ~
    = is excluded because it clashes with a parameter specification in a URL (?name=value).
    ?!FIELD_NAME?IF_FIELD_HAS_NO_VALUE? Similar to above but it's opposite. If the field has value, it's evaluated as the null string. Otherwise, it's evaluated as IF_FIELD_HAS_NO_VALUE.
    $question Replaced with ? after the ?FIEL_DNAME and ?!FIELD_ANME constructs are processed.
    "| $_ | $__ |"
    selection="..." The record ID to be regarded as the selected. It affects how $marker in the format is evaluated. none
    marker="..." Text for $marker in the format if the item matches selection "selected"
    filter="..." The regular expression of record IDs to filter records. Matching is case-insensitive none
    exclude="..." Comma separated list of record IDs to be excluded. You can use regular expression. If you specify Trash\d*, then Trash, Trash1, Trash2, ... are exluded but LightTrash and TrashBag are not excluded none
  • Example: %MDREPO{"webs" filter="^A" format="| $_ | $_admin | $_master |"}%
    This would show the metadata of webs whose names start with A.
  • Paramerers (web specific form):
    Parameter Description Default
    web="..." Specify the web. If it's a subweb, the corresponding top level web is specified This is required
    "..." Specify the format of the return value in the same manner as the format parameter in the generic form $__
    default="..." Specify the value to be returned when the specified or implied top level web does not exist in MDREPO "" (null string)
  • Example: %MDREPO{web="Foo/Bar" "$_admin"}%
    This would show the admin field of the Foo web.
  • Category: AdministrationVariables, SystemInformationVariables
  • Related: MetadataRepository (this topic)

PARENTTOPIC -- parent of current topic

SITENAME -- the current site name

SITESTATISTICSTOPIC -- name of site statistics topic

SYSTEMWEB -- name of TWiki documentation web

TOPICTITLE -- title of a topic

  • The topic title is defined by, in order of sequence:
    • form field named "Title",
    • topic preference setting named TITLE,
    • topic name.
  • Syntax: %TOPICTITLE% or %TOPICTITLE{ topic="TopicName" }%
  • Supported parameters:
    Parameter: Description: Default:
    "..." or
    Topic to get the title from. Can be of form TopicName or Web.TopicName. Current topic
    encode="html" Encode special characters into HTML entities. If a TOPICTITLE is passed into an HTML form field it should be encoded as "html". Additional encodings: encode="quote", encode="moderate", encode="safe", encode="entity" and encode="url". See ENCODE for details. "" (no encoding)
  • Example: %TOPICTITLE{Projects.SushiProject}% returns Sushi Project assuming the topic has a form field named "Title" with value "Sushi Project"
  • Expands to: TWikiVariablesSearch
  • Hint: Write [[+SomeTopicName]] to get the topic title link of a topic, see TWikiEditingShorthand#TopicTitleLinks
  • Category: SystemInformationVariables

USERSWEB -- name of users web

WIKILOGOALT -- site logo tooltip message

WIKILOGOIMG -- site logo image URL

WIKILOGOURL -- site logo home URL

WIKIWEBMASTER -- email address of the administrator

WIKIWEBMASTERNAME -- name of the administrator

Total: 15 variables

Related Topics: UserDocumentationCategory, TWikiVariables, TWikiVariablesWizard, TWikiVariablesQuickStart, SearchHelp

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Topic revision: r2 - 2013-04-22 - TWikiContributor
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