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Form.php
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Form.php
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<?php
/**
* @description Form operating
* @author Se#
* @version 0.0.3
*/
class Evil_Form extends Zend_Form
{
/**
* @description construct a form, if values is passed, call isValid
* @param array $formConfig
* @param array $values
* @author Se#
* @version 0.0.2
*/
public function __construct($formConfig, $values = array())
{
if(is_array($formConfig) && isset($formConfig['callback']))
{
$field = is_array($formConfig['callback']) && isset($formConfig['callback']['field'])
? $formConfig['callback']['field']
: 'callback';
$formConfig = self::callback($formConfig, $field);
}
elseif(is_string($formConfig))// form by table
$formConfig = self::createFormOptionsByTable($formConfig);
parent::__construct($formConfig);
if(!empty($values))
$this->isValid($values);
}
/**
* @description create a table object, if table exists
* @static
* @param string $name
* @return bool|Zend_Db_Table
* @author Se#
* @version 0.0.1
*/
public static function getTable($name)
{
if(!is_string($name))
return false;
$tables = Zend_Registry::get('db')->listTables();
$name = Evil_DB::scope2table($name);
$table = false;
if(in_array($name, $tables))
$table = new Zend_Db_Table($name);
return $table;
}
/**
* @description create a form config by table scheme
* @static
* @param string|Zend_Db_Table $table
* @return array
* @author Se#
* @version 0.0.1
*/
public static function createFormOptionsByTable($table)
{
if(is_string($table) && !($table = self::getTable($table)))
return array();// todo: fix an error
$metadata = $table->info('metadata');// get metadata
$options = array('method' => 'post', 'elements' => array());// basic options
foreach($metadata as $columnName => $columnScheme)
{
if($columnScheme['PRIMARY'])// don't show if primary key
continue;
$typeOptions = self::getFieldType($columnScheme['DATA_TYPE']);// return array('type'[, 'options'])
$attrOptions = array('label' => ucfirst($columnName));
$options = self::setFormField($options, $columnName, $attrOptions, $typeOptions);
}
$options['elements']['submit'] = array('type' => 'submit');// add submit button
return $options;
}
/**
* @description set form field
* @param array $options
* @param string $columnName
* @param array $attrOptions
* @param array $typeOptions
* @return array
* @author Se#
* @version 0.0.1
*/
public static function setFormField($options, $columnName, $attrOptions, $typeOptions)
{
if(isset($options['elements'][$columnName]) && ('ignore' == $options['elements'][$columnName]))
unset($options['elements'][$columnName]);
else
{
if(isset($options['elements'][$columnName]))
{
$options['elements'][$columnName]['type'] = isset($options['elements'][$columnName]['type']) ?
$options['elements'][$columnName]['type'] :
$typeOptions[0];
$options['elements'][$columnName]['options'] = isset($options['elements'][$columnName]['options']) ?
$options['elements'][$columnName]['options'] + $attrOptions :
$attrOptions;
}
else
{
$options['elements'][$columnName] = array(
'type' => $typeOptions[0],
'options' => $attrOptions
);
}
if(isset($typeOptions[1]))// if there is some additional options, merge it with the basic options
$options['elements'][$columnName]['options'] += $typeOptions[1];
}
return $options;
}
/**
* @description convert mysql type to the HTML-type and add (if it needs) options for the HTML-type
* @param string $type
* @return array
* @author Se#
* @version 0.0.1
*/
public static function getFieldType($type)
{
switch($type)
{
case 'text' : return array('textarea', array('rows' => 5));
case 'int' : return array('text');
default : return array('text');
}
}
/**
* @description now it is an alias for array_merge_recursive,
* todo: more intellectual merging,
* purpose: merge different form configs, ex. default and personal
* @static
* @return array
* @author Se#
* @version 0.0.1
*/
public static function merge()
{
$args = func_get_args();
$count = count($args);
if($count <= 1)
return array();
return call_user_func_array('array_merge_recursive', $args);
}
/**
* @description apply callback for a field. Callback is looking in [elements][field][options][$callBackField]
* @static
* @param array $formConfig
* @param string $callBackField
* @return array
* @author Se#
* @version 0.0.2
*/
public static function callback(array $formConfig, $callBackField = 'callback')
{
$elements = isset($formConfig['elements']) ? $formConfig['elements'] : array();
foreach($elements as $name => $config)
{
if(isset($config['options'][$callBackField]))
{
$result = call_user_func_array($config['options']['default'],
array($formConfig['elements'][$name], $formConfig));
if(is_string($result))
$formConfig['elements'][$name]['options']['value'] = $result;
else
$formConfig['elements'][$name] = $result;
if(isset($formConfig['elements'][$name]['options'][$callBackField]))
unset($formConfig['elements'][$name]['options'][$callBackField]);
}
}
return $formConfig;
}
}