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| META TOPICPARENT |
name="TWikiVariables" |
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:
FIELD_NAME=FIELD_VALUE FIELD_NAME=FIELD_VALUE ... | $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
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