en:public:developer:template_system:tags:expression:caseof
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en:public:developer:template_system:tags:expression:caseof [2012/11/15 22:00] admin [Attributes] |
en:public:developer:template_system:tags:expression:caseof [2012/11/19 11:51] (current) admin |
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| - | ===== <#CaseOf> ===== | + | ====== <#CaseOf> ====== |
| The purpose of the CaseOf is to allow the value of a variable or expression to control the flow of program execution via a multiway branch. The main reasons for using a CaseOf include improving clarity, by reducing otherwise repetitive coding | The purpose of the CaseOf is to allow the value of a variable or expression to control the flow of program execution via a multiway branch. The main reasons for using a CaseOf include improving clarity, by reducing otherwise repetitive coding | ||
| - | ==== Attributes ==== | + | ==== Parameters ==== |
| - | + | ||
| - | * **expression** - a boolean condition or a number (0 evaluate to false and all other numbers to true). Operators supported: + - * / ( ) OR AND. The tags in the condition are always evaluated before the condition is calculated | + | |
| - | * **statement_<a>** - The content (html text or template filename) to return if the expression evaluate to <a> | + | |
| - | * ... | + | |
| - | * **statement_<n>** - The content (html text or template filename) to return if the expression evaluate to <n> | + | |
| + | ^ Name ^ Mandatory ^ Description ^ | ||
| + | | <html><span style="color:#008000">Expression</span></html> | Yes | An arbitrary expression (string or number). The tags in the expression are always evaluated first | | ||
| + | | <html><span style="color:#008000">Statement_<a></span></html> | No | The content (html text or template filename) to return if the expression evaluate to <a> | | ||
| + | | <html><span style="color:#008000">...</span></html> | ... | ... | | ||
| + | | <html><span style="color:#008000">Statement_<n></span></html> | No | The content (html text or template filename) to return if the expression evaluate to <n> | | ||
| + | | <html><span style="color:#008000">Default</span></html> | No | Default value to return if no result found (else raise an error) | | ||
| ==== Example ==== | ==== Example ==== | ||
| <code> | <code> | ||
| - | <#if condition="('<#page_title>' = '') and (<#url_PageNumber> > 1)" | + | <#caseof expression="<#url_PageNumber>" |
| - | true="the page title is empty and the page number is greater than 1" | + | statement_0="their is no page" |
| - | false="the page title is NOT empty or the page number is NOT greater than 1"> | + | statement_1="their is at least 1 page" |
| + | default="their is at least <#url_PageNumber> pages"> | ||
| </code> | </code> | ||
en/public/developer/template_system/tags/expression/caseof.1353002411.txt.gz · Last modified: 2012/11/15 22:00 by admin
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