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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii" /> <meta http-equiv="Content-Style-Type" content="text/css" /> <meta http-equiv="Content-Script-Type" content="text/javascript" /> <title>HIDDEN Function</title> <meta name="generator" content="Oracle DARB XHTML Converter (Mode = ohj/ohw) - Version 5.1" /> <meta name="date" content="2009-04-14T17:32:16Z" /> <meta name="robots" content="noarchive" /> <meta name="doctitle" content="HIDDEN Function" /> <meta name="relnum" content="Release 3.2" /> <meta name="partnum" content="E12510-01" /> <link rel="copyright" href="../dcommon/html/cpyr.htm" title="Copyright" type="text/html" /> <link rel="stylesheet" href="../dcommon/css/blafdoc.css" title="Oracle BLAFDoc" type="text/css" /> <link rel="contents" href="toc.htm" title="Contents" type="text/html" /> <link rel="up" href="preface" title="Home" type="text/html" /> <link rel="up" href="apex_item.htm" title="APEX_ITEM" type="text/html" /> <link rel="up" href="apex_item004.htm" title="HIDDEN Function" type="text/html" /> <link rel="prev" href="apex_item003.htm" title="Previous" type="text/html" /> <link rel="next" href="apex_item005.htm" title="Next" type="text/html" /> </head> <body> <p id="BREADCRUMBING"><a href="preface" title="Home">Home</a> > <a href="apex_item.htm" title="APEX_ITEM">APEX_ITEM</a> > HIDDEN Function</p> <table class="simple oac_no_warn" summary="" cellspacing="0" cellpadding="0" width="100%"> <col width="86%" /> <col width="*" /> <tr valign="bottom"> <td align="left"></td> <td align="center"><a href="apex_item003.htm"><img src="../dcommon/gifs/leftnav.gif" alt="Previous" /><br /> <span class="icon">Previous</span></a> </td> <td align="center"><a href="apex_item005.htm"><img src="../dcommon/gifs/rightnav.gif" alt="Next" /><br /> <span class="icon">Next</span></a></td> </tr> </table> <p><a id="CHDBFHGA" name="CHDBFHGA"></a></p> <hr /> <div class="refsect1"> <h1><a name="AEAPI196" id="AEAPI196"></a>HIDDEN <a id="sthref536" name="sthref536"></a>Function</h1> <p>This function dynamically generates hidden form items.</p> <a id="sthref537" name="sthref537"></a> <p class="subhead2">Syntax</p> <pre xml:space="preserve" class="oac_no_warn"> APEX_ITEM.HIDDEN( p_idx IN NUMBER, p_value IN VARCHAR2 DEFAULT p_attributes IN VARCHAR2 DEFAULT NULL, p_item_id IN VARCHAR2 DEFAULT NULL, p_item_label IN VARCHAR2 DEFAULT NULL ) RETURN VARCHAR2; </pre> <a id="sthref538" name="sthref538"></a> <p class="subhead2">Parameters</p> <p><a href="#CHDHFHHI">Table: HIDDEN Parameters</a> describes the parameters available in the <code>HIDDEN</code> function.</p> <div class="tblformal"><a id="sthref539" name="sthref539"></a><a id="CHDHFHHI" name="CHDHFHHI"></a> <p class="titleintable">HIDDEN Parameters</p> <table class="Formal" title="HIDDEN Parameters" summary="This table describes the parameters available in HIDDEN." dir="ltr" border="1" width="100%" frame="hsides" rules="groups" cellpadding="3" cellspacing="0"> <col width="41%" /> <col width="*" /> <thead> <tr align="left" valign="top"> <th align="left" valign="bottom" id="r1c1-t6">Parameter</th> <th align="left" valign="bottom" id="r1c2-t6">Description</th> </tr> </thead> <tbody> <tr align="left" valign="top"> <td align="left" id="r2c1-t6" headers="r1c1-t6"> <p><code>p_idx</code></p> </td> <td align="left" headers="r2c1-t6 r1c2-t6"> <p>Number to identify the item you want to generate. The number will determine which <code>G_FXX</code> global is populated</p> <p><span class="bold">See Also:</span> <a href="apex_app.htm#CHDDADIE">"APEX_APPLICATION"</a></p> </td> </tr> <tr align="left" valign="top"> <td align="left" id="r3c1-t6" headers="r1c1-t6"> <p><code>p_value</code></p> </td> <td align="left" headers="r3c1-t6 r1c2-t6"> <p>Value of the hidden input form item</p> </td> </tr> <tr align="left" valign="top"> <td align="left" id="r4c1-t6" headers="r1c1-t6"> <p><code>p_attributes</code></p> </td> <td align="left" headers="r4c1-t6 r1c2-t6"> <p>Extra HTML parameters you want to add</p> </td> </tr> <tr align="left" valign="top"> <td align="left" id="r5c1-t6" headers="r1c1-t6"> <p><code>p_item_id</code></p> </td> <td align="left" headers="r5c1-t6 r1c2-t6"> <p>HTML attribute ID for the <code><input></code> tag</p> </td> </tr> <tr align="left" valign="top"> <td align="left" id="r6c1-t6" headers="r1c1-t6"> <p><code>p_item_label</code></p> </td> <td align="left" headers="r6c1-t6 r1c2-t6"> <p>Invisible label created for the item</p> </td> </tr> </tbody> </table> <br /></div> <!-- class="tblformal" --> <a id="sthref540" name="sthref540"></a> <p class="subhead2">Example</p> <p>Typically, the primary key of a table is stored as a hidden column and used for subsequent update processing, for example:</p> <pre xml:space="preserve" class="oac_no_warn"> SELECT empno, APEX_ITEM.HIDDEN(1,empno)|| APEX_ITEM.TEXT(2,ename) ename, APEX_ITEM.TEXT(3,job) job, mgr, APEX_ITEM.DATE_POPUP(4,rownum,hiredate,'dd-mon-yyyy') hiredate, APEX_ITEM.TEXT(5,sal) sal, APEX_ITEM.TEXT(6,comm) comm, deptno FROM emp ORDER BY 1 </pre> <p>The previous query could use the following page process to process the results:</p> <pre xml:space="preserve" class="oac_no_warn"> BEGIN FOR i IN 1..APEX_APPLICATION.G_F01.COUNT LOOP UPDATE emp SET ename=APEX_APPLICATION.G_F02(i), job=APEX_APPLICATION.G_F03(i), hiredate=to_date(APEX_APPLICATION.G_F04(i),'dd-mon-yyyy'), sal=APEX_APPLICATION.G_F05(i), comm=APEX_APPLICATION.G_F06(i) WHERE empno=to_number(APEX_APPLICATION.G_F01(i)); END LOOP; END; </pre> <p>Note that the <code>G_F01</code> column (which corresponds to the hidden <code>EMPNO</code>) is used as the key to update each row.</p> </div> <!-- class="refsect1" --> <!-- Start Footer --> <div class="footer"> <table class="simple oac_no_warn" summary="" cellspacing="0" cellpadding="0" width="100%"> <col width="86%" /> <col width="*" /> <tr> <td align="left"><span class="copyrightlogo">Copyright © 2003, 2009, Oracle and/or its affiliates. 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