https://sourceforge.net/p/pexeso-php/wiki/Expressions/Recent changes to ExpressionsenTue, 20 May 2014 18:10:40 -0000https://sourceforge.net/p/pexeso-php/wiki/Expressions/<div class="markdown_content"><h1 id="pxml-expressions">PXML Expressions</h1> <p>PXML expressions are PHP expressions used directly in the PXML. Several rules apply to such expressions: </p> <ul> <li>they must be enclosed in <strong>curly braces</strong> and thus should not contain curly braces themselves </li> <li>the expression is always executed in the global scope - the PHP lambda functions are created from expressions </li> <li>the instance of the document (encapsulating PXML document) in whose context expression is evaluated is reachable by <strong><code>$self</code></strong> variable </li> </ul> <p>The expressions are evaluated several times in <a class="" href="/p/pexeso-php/wiki/ViewLifecycle/">view's lifecycle</a>: </p> <ul> <li>during initialization only static bindings? are evaluated </li> <li>just before restoring state <a class="" href="/p/pexeso-php/wiki/BindingExpression/">binding expressions</a> are evaluated first time </li> <li>during execute stage of the view's lifecycle the <a class="" href="/p/pexeso-php/wiki/EventExpression/">event expressions</a> are evaluated </li> <li>binding expressions can also by evaluated during the update of display list if it results in dynamic creation of the components with bindings assigned </li> <li>second time are binding expressions evaluated before saving state </li> </ul></div>Jan VolfTue, 20 May 2014 18:10:40 -0000https://sourceforge.netf42feebc6e993d65fbbab3b7165d910cf7896e00