protected function _createGroup($key, array $gOptions, array $selected, array $options)
    {
        $label  = (is_int($key)) ? sprintf($this->_translate('Select group %s'), $key) : $key;
        $output = array(
            '<optgroup label="' . $this->_translate($label) . '">'
        );
        foreach ($gOptions as $value => $label) {
            if (Arr::key($value, $options)) {
                continue;
            }

            $classes = implode(' ', array(
                $this->_jbSrt('option'),
                $this->_jbSrt('option-' . Str::slug($label)),
            ));

            $isSelected = $this->_isSelected($value, $selected);

            $output[] = $this->_option($value, $isSelected, $classes, $label);
        }

        $output[] = '</optgroup>';

        return implode(PHP_EOL, $output);
    }
protected function _createGroup($key, array $gOptions, array $selected, array $options)
    {
        $label  = (is_int($key)) ? sprintf($this->_translate('Select group %s'), $key) : $key;
        $output = array(
            '<optgroup label="' . $this->_translate($label) . '">'
        );
        foreach ($gOptions as $value => $label) {
            if (Arr::key($value, $options)) {
                continue;
            }

            $classes = implode(' ', array(
                $this->_jbSrt('option'),
                $this->_jbSrt('option-' . Str::slug($label)),
            ));

            $isSelected = $this->_isSelected($value, $selected);

            $output[] = $this->_option($value, $isSelected, $classes, $label);
        }

        $output[] = '</optgroup>';

        return implode(PHP_EOL, $output);
    }
protected function _createGroup ( $ key , array $ gOptions , array $ selected , array $ options ) { $ label = ( is_int ( $ key ) ) ? sprintf ( $ this -> _translate ( 'Select group %s' ) , $ key ) : $ key ; $ output = array ( '<optgroup label="' . $ this -> _translate ( $ label ) . '">' ) ; foreach ( $ gOptions as $ value => $ label ) { if ( Arr :: key ( $ value , $ options ) ) { continue ; } $ classes = implode ( ' ' , array ( $ this -> _jbSrt ( 'option' ) , $ this -> _jbSrt ( 'option-' . Str :: slug ( $ label ) ) , ) ) ; $ isSelected = $ this -> _isSelected ( $ value , $ selected ) ; $ output [ ] = $ this -> _option ( $ value , $ isSelected , $ classes , $ label ) ; } $ output [ ] = '</optgroup>' ; return implode ( PHP_EOL , $ output ) ; }
Create options group.

@param string $key
@param array $gOptions
@param array $selected
@param array $options
@return string
Create options group .