The following settings are web preferences of the Research.ISO19152 web. These preferences overwrite the site-level preferences in DefaultPreferences and SitePreferences , and can be overwritten by user preferences (your personal topic, eg: WikiGuest in the Main web).
These settings override the defaults for this web only. See full list of defaults with explanation . Many of the settings below are commented out. Remove the # sign to enable a local customisation.
on
, do not set NOSEARCHALL, and add the "what" and "use to..." description for the site map. Use links that include the name of the web, i.e. Research/ISO19152.Topic links.
web="all"
search: (Set to
on
for hidden webs).
on
); link WikiWords (if empty); can be overwritten by web preferences:
[[...][...]]
syntax to link topics if you disabled WikiWord linking. The
<noautolink> ... </noautolink>
syntax can be used to prevents links within a block of text.
[multiple of 3 spaces] * [space] Set [space] MACRONAME [space] = [space] value
Example:
* Set WEBBGCOLOR = #FFFFC0Macros defined using preference settings are expanded by enclosing their name in percent signs. So when you write
%WEBBGCOLOR%
, it gets expanded to
#00B0F0
A preference macro is always taken from the most current topic revision, even when accessing previous revisions of a topic.
Preferences can be defined in a number of places:
Set
statements which occur at numerically higher locations override macros of the same name defined at lower numbered levels,
unless the macro was listed in a finalpreferences setting (finalised) at a lower-numbered level.
in this case, the macro is locked to the value at that level;
set
statements at higher-numbered levels are ignored.
preference settings can easily be disabled with a # sign. Example:
* #Set DENYWEBCHANGE = %USERSWEB%.UnknownUserYou can hide preference settings in the output by enclosing them in HTML comments; for example,
<!-- * Set HIDDEN = This will be invisible in the output -->
If you are setting a preference and using it in the same topic, note that Foswiki reads all the preference settings from the saved version of the topic before it displays anything. This means you can use a setting anywhere in the topic, even if you set it at the very end. But beware: it also means that if you change the setting of a macro you are using in the same topic,
Preview
will show the wrong thing, and you must
Save
the topic to see it correctly.
Also note that Foswiki always reads the setting from the most current topic revision, so viewing older revisions of a topic can show unexpected results.
And especially important, preference settings are never overridden or set in "%INCLUDE{" topics. in the below example about weather conditions, note the difference in the CONDITIONS expansion
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 MACRONAME = value starts here and continues here
Whatever you include in your macro will be expanded on display, exactly as if it had been entered directly (though see Parameters, below).
Example: Create a custom logo macro
%MYLOGO%
, define the preference settings in 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 preference setting in
WebPreferences
:
* Set MYLOGO = %PUBURL%/%WEB%/LogoTopic/mylogo.gif
You can also set preference settings in a topic by clicking the link
Edit topic preference settings
under
More topic actions
. Preferences set in this manner are known as 'meta' preferences and are not visible in the topic text, but take effect nevertheless.
Macros defined using preference settings can take parameters. These are symbols passed in the call to the macro to define local macros that will be expanded in the output. For example,
* Set CONDITIONS = According to [[System.%BASETOPIC%][%BASETOPIC%]] the %WHAT% is %STATE% today (Set in ...).You can call this macro passing in values for
WHAT
and
STATE
. For example:
%CONDITIONS{WHAT="sea" STATE="choppy"}%
%CONDITIONS{WHAT="sea" STATE="choppy"}%
.
DEFAULT
gets the value of any unnamed parameter in the macro call.
default
parameter so that they expand to something even when a value isn't passed for them in the call.
* Set WEATHER = It's %DEFAULT{default="raining"}%.
%WEATHER%
expands to
%WEATHER%
%WEATHER{"sunny"}%
expands to
%WEATHER{"sunny"}%
Note that parameters override all other macros, including system defined macros, in the expansion of the macro where they are used.
These are special types of preference settings to control access to content. AccessControl explains these security settings in detail. Parameters are not available in access control settings.
Local
in place of
Set
in the macro definition. For example, if the user sets the following in their home topic:
* Set EDITBOXHEIGHT = 10 * Local EDITBOXHEIGHT = 20Then, 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 macros in their evaluation order, so you can see macro scope if you get confused.
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