435 lines
11 KiB
PHP
435 lines
11 KiB
PHP
<?php defined('SYSPATH') OR die('No direct script access.');
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/**
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* Form helper class. Unless otherwise noted, all generated HTML will be made
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* safe using the [HTML::chars] method. This prevents against simple XSS
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* attacks that could otherwise be trigged by inserting HTML characters into
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* form fields.
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*
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* @package Kohana
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* @category Helpers
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* @author Kohana Team
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* @copyright (c) 2007-2012 Kohana Team
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* @license http://kohanaframework.org/license
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*/
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class Kohana_Form {
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/**
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* Generates an opening HTML form tag.
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*
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* // Form will submit back to the current page using POST
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* echo Form::open();
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*
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* // Form will submit to 'search' using GET
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* echo Form::open('search', array('method' => 'get'));
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*
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* // When "file" inputs are present, you must include the "enctype"
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* echo Form::open(NULL, array('enctype' => 'multipart/form-data'));
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*
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* @param mixed $action form action, defaults to the current request URI, or [Request] class to use
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* @param array $attributes html attributes
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* @return string
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* @uses Request::instance
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* @uses URL::site
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* @uses HTML::attributes
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*/
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public static function open($action = NULL, array $attributes = NULL)
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{
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if ($action instanceof Request)
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{
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// Use the current URI
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$action = $action->uri();
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}
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if ( ! $action)
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{
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// Allow empty form actions (submits back to the current url).
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$action = '';
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}
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elseif (strpos($action, '://') === FALSE)
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{
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// Make the URI absolute
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$action = URL::site($action);
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}
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// Add the form action to the attributes
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$attributes['action'] = $action;
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// Only accept the default character set
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$attributes['accept-charset'] = Kohana::$charset;
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if ( ! isset($attributes['method']))
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{
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// Use POST method
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$attributes['method'] = 'post';
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}
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return '<form'.HTML::attributes($attributes).'>';
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}
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/**
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* Creates the closing form tag.
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*
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* echo Form::close();
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*
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* @return string
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*/
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public static function close()
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{
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return '</form>';
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}
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/**
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* Creates a form input. If no type is specified, a "text" type input will
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* be returned.
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*
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* echo Form::input('username', $username);
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*
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* @param string $name input name
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* @param string $value input value
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* @param array $attributes html attributes
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* @return string
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* @uses HTML::attributes
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*/
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public static function input($name, $value = NULL, array $attributes = NULL)
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{
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// Set the input name
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$attributes['name'] = $name;
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// Set the input value
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$attributes['value'] = $value;
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if ( ! isset($attributes['type']))
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{
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// Default type is text
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$attributes['type'] = 'text';
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}
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return '<input'.HTML::attributes($attributes).' />';
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}
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/**
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* Creates a hidden form input.
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*
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* echo Form::hidden('csrf', $token);
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*
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* @param string $name input name
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* @param string $value input value
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* @param array $attributes html attributes
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* @return string
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* @uses Form::input
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*/
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public static function hidden($name, $value = NULL, array $attributes = NULL)
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{
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$attributes['type'] = 'hidden';
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return Form::input($name, $value, $attributes);
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}
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/**
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* Creates a password form input.
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*
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* echo Form::password('password');
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*
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* @param string $name input name
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* @param string $value input value
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* @param array $attributes html attributes
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* @return string
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* @uses Form::input
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*/
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public static function password($name, $value = NULL, array $attributes = NULL)
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{
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$attributes['type'] = 'password';
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return Form::input($name, $value, $attributes);
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}
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/**
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* Creates a file upload form input. No input value can be specified.
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*
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* echo Form::file('image');
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*
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* @param string $name input name
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* @param array $attributes html attributes
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* @return string
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* @uses Form::input
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*/
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public static function file($name, array $attributes = NULL)
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{
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$attributes['type'] = 'file';
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return Form::input($name, NULL, $attributes);
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}
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/**
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* Creates a checkbox form input.
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*
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* echo Form::checkbox('remember_me', 1, (bool) $remember);
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*
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* @param string $name input name
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* @param string $value input value
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* @param boolean $checked checked status
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* @param array $attributes html attributes
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* @return string
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* @uses Form::input
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*/
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public static function checkbox($name, $value = NULL, $checked = FALSE, array $attributes = NULL)
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{
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$attributes['type'] = 'checkbox';
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if ($checked === TRUE)
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{
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// Make the checkbox active
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$attributes[] = 'checked';
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}
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return Form::input($name, $value, $attributes);
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}
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/**
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* Creates a radio form input.
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*
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* echo Form::radio('like_cats', 1, $cats);
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* echo Form::radio('like_cats', 0, ! $cats);
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*
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* @param string $name input name
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* @param string $value input value
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* @param boolean $checked checked status
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* @param array $attributes html attributes
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* @return string
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* @uses Form::input
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*/
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public static function radio($name, $value = NULL, $checked = FALSE, array $attributes = NULL)
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{
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$attributes['type'] = 'radio';
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if ($checked === TRUE)
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{
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// Make the radio active
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$attributes[] = 'checked';
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}
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return Form::input($name, $value, $attributes);
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}
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/**
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* Creates a textarea form input.
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*
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* echo Form::textarea('about', $about);
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*
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* @param string $name textarea name
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* @param string $body textarea body
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* @param array $attributes html attributes
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* @param boolean $double_encode encode existing HTML characters
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* @return string
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* @uses HTML::attributes
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* @uses HTML::chars
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*/
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public static function textarea($name, $body = '', array $attributes = NULL, $double_encode = TRUE)
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{
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// Set the input name
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$attributes['name'] = $name;
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// Add default rows and cols attributes (required)
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$attributes += array('rows' => 10, 'cols' => 50);
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return '<textarea'.HTML::attributes($attributes).'>'.HTML::chars($body, $double_encode).'</textarea>';
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}
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/**
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* Creates a select form input.
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*
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* echo Form::select('country', $countries, $country);
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*
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* [!!] Support for multiple selected options was added in v3.0.7.
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*
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* @param string $name input name
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* @param array $options available options
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* @param mixed $selected selected option string, or an array of selected options
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* @param array $attributes html attributes
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* @return string
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* @uses HTML::attributes
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*/
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public static function select($name, array $options = NULL, $selected = NULL, array $attributes = NULL)
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{
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// Set the input name
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$attributes['name'] = $name;
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if (is_array($selected))
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{
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// This is a multi-select, god save us!
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$attributes[] = 'multiple';
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}
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if ( ! is_array($selected))
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{
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if ($selected === NULL)
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{
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// Use an empty array
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$selected = array();
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}
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else
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{
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// Convert the selected options to an array
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$selected = array( (string) $selected);
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}
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}
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if (empty($options))
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{
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// There are no options
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$options = '';
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}
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else
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{
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foreach ($options as $value => $name)
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{
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if (is_array($name))
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{
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// Create a new optgroup
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$group = array('label' => $value);
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// Create a new list of options
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$_options = array();
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foreach ($name as $_value => $_name)
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{
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// Force value to be string
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$_value = (string) $_value;
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// Create a new attribute set for this option
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$option = array('value' => $_value);
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if (in_array($_value, $selected))
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{
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// This option is selected
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$option[] = 'selected';
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}
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// Change the option to the HTML string
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$_options[] = '<option'.HTML::attributes($option).'>'.HTML::chars($_name, FALSE).'</option>';
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}
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// Compile the options into a string
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$_options = "\n".implode("\n", $_options)."\n";
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$options[$value] = '<optgroup'.HTML::attributes($group).'>'.$_options.'</optgroup>';
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}
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else
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{
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// Force value to be string
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$value = (string) $value;
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// Create a new attribute set for this option
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$option = array('value' => $value);
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if (in_array($value, $selected))
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{
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// This option is selected
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$option[] = 'selected';
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}
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// Change the option to the HTML string
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$options[$value] = '<option'.HTML::attributes($option).'>'.HTML::chars($name, FALSE).'</option>';
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}
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}
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// Compile the options into a single string
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$options = "\n".implode("\n", $options)."\n";
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}
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return '<select'.HTML::attributes($attributes).'>'.$options.'</select>';
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}
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/**
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* Creates a submit form input.
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*
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* echo Form::submit(NULL, 'Login');
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*
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* @param string $name input name
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* @param string $value input value
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* @param array $attributes html attributes
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* @return string
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* @uses Form::input
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*/
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public static function submit($name, $value, array $attributes = NULL)
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{
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$attributes['type'] = 'submit';
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return Form::input($name, $value, $attributes);
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}
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/**
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* Creates a image form input.
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*
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* echo Form::image(NULL, NULL, array('src' => 'media/img/login.png'));
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*
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* @param string $name input name
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* @param string $value input value
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* @param array $attributes html attributes
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* @param boolean $index add index file to URL?
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* @return string
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* @uses Form::input
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*/
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public static function image($name, $value, array $attributes = NULL, $index = FALSE)
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{
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if ( ! empty($attributes['src']))
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{
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if (strpos($attributes['src'], '://') === FALSE)
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{
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// Add the base URL
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$attributes['src'] = URL::base($index).$attributes['src'];
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}
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}
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$attributes['type'] = 'image';
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return Form::input($name, $value, $attributes);
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}
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/**
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* Creates a button form input. Note that the body of a button is NOT escaped,
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* to allow images and other HTML to be used.
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*
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* echo Form::button('save', 'Save Profile', array('type' => 'submit'));
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*
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* @param string $name input name
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* @param string $body input value
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* @param array $attributes html attributes
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* @return string
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* @uses HTML::attributes
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*/
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public static function button($name, $body, array $attributes = NULL)
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{
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// Set the input name
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$attributes['name'] = $name;
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return '<button'.HTML::attributes($attributes).'>'.$body.'</button>';
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}
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/**
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* Creates a form label. Label text is not automatically translated.
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*
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* echo Form::label('username', 'Username');
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*
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* @param string $input target input
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* @param string $text label text
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* @param array $attributes html attributes
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* @return string
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* @uses HTML::attributes
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*/
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public static function label($input, $text = NULL, array $attributes = NULL)
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{
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if ($text === NULL)
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{
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// Use the input name as the text
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$text = ucwords(preg_replace('/[\W_]+/', ' ', $input));
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}
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// Set the label target
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$attributes['for'] = $input;
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return '<label'.HTML::attributes($attributes).'>'.$text.'</label>';
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}
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} // End form
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