Dynamický formulár generovaný v PHP

Skript pozná dva druhy vstupných polí - input a textarea. Konfiguračné pole pre tvorbu formulára je vyznačené červenou ($form), vysvetlenei konfigurácie je v komentároch. Pre priebežnú kontrolu povinných vstupov sa generuje jednoduchý javascript. Trieda ponúka možnosti rozšírenia o ďalšie typy vstupných polí (checkbox, radio...).
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head>
 <title>Formulár 01</title>
 <meta http-equiv="Content-Type" content="text/html; charset=windows-1250">
 <meta http-equiv="Keywords" content="">
 <meta name="description" content="">
 <link href="style.css" rel="stylesheet" type="text/css">
 <script type="text/javascript" language="JavaScript" src="java.js"></script>
</head>

<body>

<?php

// Script generuje formular, kontroluje vyplnenie povinnych poli //
// na urovni javascriptu aj php //
// odstranuje prebytocne medzery na zac. a konci retazcov //
// zneskodnuje vlozene html tagy //

// Definition form fields // ---------------------------------------------------
// toto definicne pole ($form) urcuje vzhlad formulara
//
// definicia jednej polozky
// 0 => array (
//        "type" => "input",        - typ pola; hodnoty: input, textarea
//        "require" => TRUE,        - povinne vyplnenie; TRUE, FALSE
//        "name" => "name",         - nazov pola; napr: <input name="name" ...
//        "description" => "Meno",  - popis; nieco ako label pred <input ...
//        "size" => 30              - rozmer; <input size="30" ...
// ),
//
// definicia textarea, pribudnu tieto polozky
//        "cols" => 30,             - pocet stlpcov (znakov)
//        "rows" => 4               - pocet riadkov
//
$form = array (
    0 => array (
        "type" => "input",
        "require" => TRUE,
        "name" => "name",
        "description" => "Meno",
        "size" => 30
    ),
    1 => array (
        "type" => "input",
        "require" => TRUE,
        "name" => "lastname",
        "description" => "Priezvisko",
        "size" => 30
    ),
    2 => array (
        "type" => "input",
        "require" => FALSE,
        "name" => "job",
        "description" => "Zamestnanie",
        "size" => 20
    ),
    3 => array (
        "type" => "textarea",
        "require" => FALSE,
        "name" => "adress",
        "description" => "Adresa",
        "cols" => 30,
        "rows" => 4
    ),
    4 => array (
        "type" => "textarea",
        "require" => FALSE,
        "name" => "text",
        "description" => "Text",
        "cols" => 30,
        "rows" => 3
    )
);

////////////////////////////////////////////////////////////////////////////////
// Create <input ... /> // -----------------------------------------------------
class cHtml_input
{
 private $name = '';        // nazov v input name aj v databaze //
 private $description = ''; // popis //
 private $size = 10;        // velkost input //

 // Constructor // -------------------------------------------------------------
 function __construct (
  $_name = '', $_description = '', $_size = 10 )
 {
  $this->name = $_name;
  $this->description = $_description;
  $this->size = $_size;
  echo '
   <tr><td>'.$_description.' </td><td>
   <input type="text" name="'.$_name.'" size="'.$_size.'" value="" />
   </td></tr>';
 }

 // Creating input box with parameters // --------------------------------------
 static function html_input (
  $_name = '', $_description = '', $_size = 10 )
 {
  $value = '';

  if( isset( $_POST[$_name] ) )
   $value = $_POST[$_name];
   
  $out = '
   <tr><td>'.$_description.' </td><td>
    <input type="text" name="'.$_name.'" size="'.$_size.'" value="'.trim( $value ).'" />
   </td></tr>';
  return $out;
 }

} // end class cHtml_input // --------------------------------------------------

////////////////////////////////////////////////////////////////////////////////
// Create <textarea ... /> // --------------------------------------------------
class cHtml_textarea
{

 // Creating textarea box with parameters // -----------------------------------
 static function html_textarea (
  $_name = '', $_description = '', $_cols = 10, $_rows = 3 )
 {
  $value = '';

  if( isset( $_POST[$_name] ) )
   $value = $_POST[$_name];

  echo '
   <tr><td>'.$_description.' </td><td>
    <textarea name="'.$_name.'" cols="'.$_cols.'" rows="'.$_rows.'">'.htmlspecialchars( trim( $value ) ).'
   </textarea></td></tr>';
 }

} // end class cHtml_textarea // -----------------------------------------------

////////////////////////////////////////////////////////////////////////////////
// Create Form // --------------------------------------------------------------
// Nacita definicne udaje z pola $_def //
// a podla toho vytvoti formular formatovany to tabulky //
class cForm
{
 private $name = '';        // nazov v input name aj v databaze //
 private $out = '';         // vystupny retazec //
 private $ok = FALSE;       // vystupny retazec //

 // Constructor //
 function __construct ( $_name, $_action, $_def )
 {
  $this->name = $_name;

  // Kontrola odoslanych udajov //
  if( isset($_POST['submit']) ) {
   $this->ok = TRUE;
   foreach( $_def as $box ) { // nacitanie poli formulara //
    if( $box['require'] && ( $_POST[$box['name']] == "" ) ) {
     echo 'Vyplňte chýbajúce pole '.$box['description'].'<br />';
     // nastavenie priznaku chyby //
     $this->ok = FALSE;
    } 
   }
  }

  // Ak neboli data odoslane, alebo boli nespravne - zobrazi formular //
  if( !$this->ok ) {

   // Javascript Validator //
   echo '
   <script language="javascript" type="text/javascript"><!--
   function checkValidator() {
    var i = 0;
    var ok = 0;
    var missing = new Array();
    var error = "";
   ';

   // Kontrola required poli javascriptom //
   // Pre kazde required pole sa generuje podmienka //
   foreach( $_def as $box ) { // nacitanie poli formulara //
    if( $box['require'] ) {   // zisti ci je pole potrebne //
     echo ' if( '.$_name.'.'.$box['name'].'.value == "" ) { missing[ok++] = "'.$box['description'].'"; }';
    }
   }
   
   // Alert okno v pripade ak niektore required pole nie je vyplnene //
   // vypise aj nazvy nevyplnenych poli //
   echo '
    if( ok > 0 ) {
     for( i=0; i<ok; i++ )
      error += missing[i] + ", ";
      error = error.substring( 0, ( error.length - 2 ) );
     alert( "Potrebné polia nie sú vyplnené!\nVyplňte prosím " + error );
     return false;
    } else
     return true;
   }
   --></script>'; // End Javascript Validator //

   // Formular Begin //
   echo '
   <!-- Form 1 begin -->
   <form name="'.$_name.'" action="'.$_action.'" method="post" onsubmit="return checkValidator();">
    <table border="0" cellspacing="2" cellpadding="0">';

   foreach( $_def as $box ) { // nacitanie poli formulara //
    switch( $box['type'] ) {  // z definicneho pola //
     case "input" :
      echo cHtml_input::html_input
       ( $box['name'], $box['description'], $box['size'] );
      break;
     case 'textarea' :
      cHtml_textarea::html_textarea
       ( $box['name'], $box['description'], $box['cols'], $box['rows'] );
      break;
    }
   }

   echo '
    <tr><td></td><td>
     <input type="submit" name="submit" value="Odoslať" />
    </td></tr></table>
   </form>
   <!-- Form 1 end -->';

  } else { // end if( !$this->ok ) //

   echo 'Údaje boli odoslané na spracovanie.<br /> <br />';

   foreach( $_def as $box ) { // nacitanie poli formulara //
    $value = '';
    if( isset( $_POST[$box['name']] ) )
     $value = htmlspecialchars( trim( $_POST[$box['name']] ) );
    echo $box['description'].' - '.$value.'<br />';
   }

  } // end else { end if( !$this->ok ) //
 }
 
} // end class cForm // --------------------------------------------------------

// Vytvorenie formulara //
// 'formular'   - nazov formulara; <form name="formular" ...
// 'index.php'  - skript, ktory spracuje formular
// $form        - definicne pole, podla ktoreho sa postavi formular
$formular = new cForm( 'formular', 'index.php', $form );

?>

</body></html>

Žiadne dokumenty ani odkazy k tejto stránke.
Generátor typoscriptu

Vytvára typoscript pre bežné použitie. Generátor je jednoduchý na obsluhu, stačí vyplniť zopár položiek formulára.
rtgx

Dynamický formulár generovaný v PHP

Generátor typoscriptu

Odkazy
