I'm trying to design a Form class in PHP. So far, I have the <input> buttons pretty well working. But the <select> boxes have me stymied. I'm trying to figure out a "generic" way of adding the <option> tags, and am lacking the creativity.
I'm not asking for teh codez, but implementation ideas are welcome.
This is my implementation of it from my bare-bones framework that I use in super simple projects:
function select($name, $options = array(), $attrs = array(), $showEmpty = false) {
$attrs['name'] = $name;
$attrs['class'] = isset($attrs['class']) ? $attrs['class'] . ' input' : 'input';
if(isset($this->validation->invalid[$name])) {
$attrs['class'] .= ' errorinput';
}
$opts = array();
foreach($attrs as $key => $value) {
$opts[] = $key . '="' . $value . '"';
}
$htmloptions = array();
$hasSelected = false;
foreach($options as $option => $value) {
if(isset($this->validation->post[$name]) && $this->validation->post[$name] == $option) {
$hasSelected = true;
$htmloptions[] = '<option value="' . $option . '" selected>' . $value;
} else {
$htmloptions[] = '<option value="' . $option . '">' . $value;
}
}
if($showEmpty) {
$emptyoption = '<option value=""' . (($hasSelected) ? '' : ' selected') . '>';
$htmloptions = array_merge($emptyoption, $htmloptions);
}
return '<select ' . implode(' ', $opts) . '>' . implode("\n", $htmloptions) . '</select>';
}
Heres some function I made some while ago.
function formLabel($id, $text, $attr = array(), $escape = true) {
$attr['for'] = $id;
return htmlElement('label', $text, $attr, true, $escape);
}
function formSelect($name, $selected, $options, $attr = array(), $escape = true) {
$attr['name'] = $name;
if (!isset($attr['id'])) {
$attr['id'] = $name;
}
$options = formSelectOptions($selected, $options, $escape);
return htmlElement('select', $options, $attr, true, false);
}
function formSelectOptions($selected = null, $options, $escape = true) {
if ($escape) {
$options = escape($options);
}
array_walk($options, 'formSelectOption', $selected);
return implode('', $options);
}
function formSelectOption(&$value, $key, $selected) {
if (is_array($value)) {
$attr['label'] = $key;
array_walk($value, 'formSelectOption', $selected);
$value = htmlElement('optgroup', implode('', $value), $attr, true, false);
} else {
$attr['value'] = $key;
if (($selected == $key) &&
(0 === strcmp($selected, $key)) &&
($selected !== null)) {
$attr['selected'] = 'selected';
}
$value = htmlElement('option', $value, $attr, true, false);
}
}
function escape($val) {
if (is_array($val)) {
return array_map('escape', $val);
}
return htmlspecialchars($val, ENT_QUOTES);
}
function htmlElement($tag, $value, $attr = null, $end = true, $escape = true) {
if (!is_array($attr)) {
$attr = array();
}
if ($escape) {
$value = htmlspecialchars($value);
}
return "<$tag" . (!empty($attr) ? ' ' : '') . arrayToAttributes($attr) . ($end ? '' : '/') . '>' . $value . ($end ? "</$tag>" : '');
}
function arrayToAttributes($attr) {
array_walk($attr, '_arrayToAttributes');
return implode(' ', $attr);
}
function _arrayToAttributes(&$v, $k) {
$k = escape($k);
$t = escape($v);
$v = "$k=\"$t\"";
}
Some tests
<html><header><title>Test</title></header>
<body>
<p>
<?php
$arr = array('hoi', 'wee', 'hai', 'Sub' => array('Hi' => 'Hi', 'Lo' => 'Lo'));
echo '<p>', formSelect('aaaa', null, $arr), "</p>\n";
echo '<p>', formSelect('ccc', 'Hi', $arr), "</p>\n";
echo '<p>', formLabel('hello', 'Hello'), ': ', formSelect('hello', 1, $arr), "</p>\n";
?></p>
<p>
<?php
$months = array (1 => 'Januar',
'Februar', 'Mars', 'April', 'Mai',
'Juni', 'Juli', 'August', 'September',
'Oktober', 'November', 'Desember');
echo formLabel('month', 'Month'), ': ', formSelect('month', null, $months), "\n";
echo formLabel('month2', 'Month'), ': ', formSelect('month2', 4, $months), "\n";
?></p>
</body><html>
function array_drop_down($name, $display_fields, $id_fields, $selected_display_field, $misc = ''){
$array_dd_html = '<select name="'.$name.'" '.$misc.'>';
for($i = 0; $i < sizeof($id_fields); $i++){
if($selected_display_field == $display_fields[$i]){
$array_dd_html.= '<option selected="yes" value="'.$id_fields[$i].'">'.$display_fields[$i].'</option>';
}
else{
$array_dd_html.= '<option value="'.$id_fields[$i].'">'.$display_fields[$i].'</option>';
}
}
$array_dd_html.= '</select>';
return $array_dd_html;
}
function sql_drop_down($sql_statement, $name, $display_field, $id_field, $selected_field='',$selected_value='', $misc = ''){
$result = mysql_query($sql_statement);
$numOfCols = mysql_num_rows($result);
$select_html = '<select name="'.$name.'"'. $misc.'>';
if($numOfCols > 0){
for($i = 0; $i < $numOfCols; $i++)
{
$id = mysql_result($result, $i, $id_field);
$display = mysql_result($result, $i, $display_field);
if($selected_value == $id){
$select_html.= '<option selected="yes" value="'.$id.'">'.$display.'</option>';
}
else{
$select_html.= '<option value="'.$id.'">'.$display.'</option>';
}
}
$select_html.= '</select>';
}
else{
$select_html = "Error Occured...";
}
return $select_html;
}
Use the $misc variable to pass in CSS, id's, javascript or whatever else