5

MY form helper

Derek Jones edited this page 2012-07-05 13:58:23 -07:00

The extended class is a part of my validate library but i release it as a stand alone class too.

The methods of this class are input sensitive. The input can come from $_POST or $_GET. Save the code as MY_form_helper.php in the application/helpers directory. And load the form helper as usual.

<?php

function form_hidden($name, $value = '')
{
    if ( ! is_array($name))
    {
        $value = (isset($_POST[$name]))?$_POST[$name]:((isset($_GET[$name]))?$_GET[$name]:$value);
        return '<input type="hidden" name="'.$name.'" value="'.form_prep($value).'" />';
    }

    $form = '';
    foreach ($name as $name => $value)
    {
        $value = (isset($_POST[$name]))?$_POST[$name]:((isset($_GET[$name]))?$_GET[$name]:$value);
        $form .= '<input type="hidden" name="'.$name.'" value="'.form_prep($value).'" />';
    }
    
    return $form;
}

function form_input($data = '', $value = '', $extra = '')
{
    $name = ( ! is_array($data))?$data:((isset($data['name']))?$data['name']:'');
    $value = (isset($_POST[$name]))?$_POST[$name]:((isset($_GET[$name]))?$_GET[$name]:$value);
    $defaults = array('type' => 'text', 'name' => (( ! is_array($data)) ? $data : ''), 'value' => $value, 'maxlength' => '500', 'size' => '50');

    return "<input ".parse_form_attributes($data, $defaults).$extra." />\n";
}

function form_textarea($data = '', $value = '', $extra = '')
{
    $name = ( ! is_array($data))?$data:((isset($data['name']))?$data['name']:'');
    $defaults = array('name' => (( ! is_array($data)) ? $data : ''), 'cols' => '90', 'rows' => '12');
    
    if ( ! is_array($data) OR ! isset($data['value']))
    {
        $val = (isset($_POST[$name]))?$_POST[$name]:((isset($_GET[$name]))?$_GET[$name]:$value);
    }
    else
    {
        $val = (isset($_POST[$name]))?$_POST[$name]:((isset($_GET[$name]))?$_GET[$name]:$data['value']); 
        unset($data['value']); // textareas don't use the value attribute
    }
        
    return "<textarea ".parse_form_attributes($data, $defaults).$extra.">".$val."</textarea>\n";
}

function form_dropdown($name = '', $options = array(), $selected = '', $extra = '')
    {
        if ($extra != '') $extra = ' '.$extra;
        
        $form = '<select name="'.$name.'"'.$extra.">\n";
        
        foreach ($options as $key => $val)
        {
            $key = (string) $key;
            $val = (string) $val;
            
            $name = str_replace('[]','',$name);
            $send = (isset($_POST[$name]))?$_POST[$name]:((isset($_GET[$name]))?$_GET[$name]:$selected);
           
            $sel = (is_array($send) && in_array($key, $send))?' selected="selected"':(($key == $send)?' selected="selected"':'');
        
            $form .= '<option value="'.$key.'"'.$sel.'>'.$val."</option>\n";
        }

        $form .= '</select>';
    
        return $form;
    }

function form_checkbox($data = '', $value = '', $checked = FALSE, $extra = '')
{
    $name = ( ! is_array($data))?$data:((isset($data['name']))?$data['name']:'');
    $defaults = array('type' => 'checkbox', 'name' => (( ! is_array($data)) ? $data : ''), 'value' => $value);
    
    if (is_array($data) AND array_key_exists('checked', $data))
    {
        $checked = (isset($_POST[$name]))?TRUE:((isset($_GET[$name]))?TRUE:$data['checked']);
        
        if ($checked == FALSE)
        {
            unset($data['checked']);
        }
        else
        {
            $data['checked'] = 'checked';
        }
    }
    
    $checked = (isset($_POST[$name]))?TRUE:((isset($_GET[$name]))?TRUE:$checked);
    if ($checked == TRUE)
        $defaults['checked'] = 'checked';
    else
        unset($defaults['checked']);

    return "&lt;input ".parse_form_attributes($data, $defaults).$extra." /&gt;\n";
}

function form_radio($data = '', $value = '', $checked = FALSE, $extra = '')
    {
        if ( ! is_array($data))
        {    
            $data = array('name' => $data);
        }

        $data['type'] = 'radio';
        return form_checkbox($data, $value, $checked, $extra);
    }

Changes with the CI methods

• form_checkbox and form_radio are not checked by default
• form_dropdown needs the multiple attribute if selecting more than one value from the dropdown is needed. This because of the scenario where the user only picks one option.