TYPO3 Core

A viewhelper should allow to manipulate strings in a simple way to other 'formats'.

• I often needs a explode-viewhelper, which convert a comma-separated list into an array.
• I need sometimes a viewhelper which could convert a string to a string in lower case.
• ...

I wrote the viewhelper `convert`. The viewhelper allows the integrator, to use at least nearly any of the powerful php function for string-manipulation.

The behavior is a combination of <f:alias> and <f:variable>. It depends on the way how you define the string which should be manipulated.

Example:

<!-- stores the result of the complex php-function explode($limiter,$string, $limit) in a global fluid-variable -->
<f:convert phpfunc="explode" value="php,javascript,java,c++,ada,prolog,lisp,fortran," prev="{0:','} post="{0:3}" as="langList" />
<f:for each="{langList}" as="progLanguage">
   <div>{progLanguage}</div>
<f:for>
<!-- output:
   <div>php</div>
   <div>javascript</div>
   <div>java,c++,ada,prolog,lisp,fortran,</div> 
-->

<!-- defines the result of the complex php-function explode($limiter,$string, $limit) only for the nested html via 'local="1"' -->
<f:convert phpfunc="explode" value="php,javascript,java,c++,ada,prolog,lisp,fortran," prev="{0:','} post="{0:3}" as="langList" local="1" >
   <f:for each="{langList}" as="progLanguage">
      <div>{progLanguage}</div>
   <f:for>
</f:convert> 
<!-- output:
   <div>php</div>
   <div>javascript</div>
   <div>java,c++,ada,prolog,lisp,fortran,</div> 
-->