WikiIndex:Parser functions: Difference between revisions

'''ParserFunction''' is a special kind of [[WikiIndex:Magic words|magic word]] that is most useful for templates.

Code:

<pre>{{ #if: {{{value|}}} | what to show if activated | what to show if not }}</pre>

Example:

<pre>{{ #if: {{{1|}}} | The name of this site is {{{1}}}. | This site has an unknown name. }}</pre>

Let's say this is included in the template ''[[Template:IfExample|ifExample]]''. If <nowiki>{{ifExample|WikiIndex}}</nowiki> is entered, "{{ifExample|WikiIndex}}" will show up because value was specified, as "WikiIndex". <nowiki>{{ifExample|not WikiIndex}}</nowiki> makes "{{ifExample|not WikiIndex}}", because value is specified, as "not WikiIndex". <nowiki>{{ifExample}}</nowiki> makes just "{{ifExample}}" because it was left blank.

Code:

<pre>{{ #switch: value  

| value1 = what to show if value1 is entered  

| value2 = what to show if value2 is entered  

| what to show if something else is entered  

| #default = what to show if nothing is entered  

Example:

<pre>{{ #switch: {{{1}}}  

| a = argh  

| b = blah  

| c = cough  

| anything  

| #default = nothing  

This is included in the template [[template:switchExample|switchExample]]. <nowiki>{{switchExample|a}}</nowiki> gives "{{switchExample|a}}" because a is entered. <nowiki>{{switchExample}}</nowiki> gives "{{switchExample}}", because the template was left blank. <nowiki>{{switchExample|d}}</nowiki> gives "{{switchExample|d}}", because d doesn't exist in the template.