Pop\Form\Form::renderWithTemplate PHP Метод

    protected function renderWithTemplate()
    {
        // Initialize properties and variables.
        $isFile = !(stripos($this->template, '.phtml') === false && stripos($this->template, '.php') === false);
        $template = $this->template;
        $fileContents = $isFile ? file_get_contents($this->template) : null;
        $this->output = null;
        $children = $this->form->getChildren();
        // Loop through the child elements of the form.
        foreach ($children as $child) {
            // Clear the password field from display.
            if ($child->getAttribute('type') == 'password') {
                $child->setValue(null);
                $child->setAttributes('value', null);
            }
            // Get the element name.
            if ($child->getNodeName() == 'fieldset') {
                $chdrn = $child->getChildren();
                $attribs = $chdrn[0]->getAttributes();
            } else {
                $attribs = $child->getAttributes();
            }
            $name = isset($attribs['name']) ? $attribs['name'] : '';
            $name = str_replace('[]', '', $name);
            // Set the element's label, if applicable.
            if (null !== $child->getLabel()) {
                // Format the label name.
                $label = new Child('label', $child->getLabel());
                $label->setAttributes('for', $name);
                $labelAttributes = $child->getLabelAttributes();
                if (null !== $labelAttributes) {
                    foreach ($labelAttributes as $a => $v) {
                        $label->setAttributes($a, $v);
                    }
                } else {
                    if ($child->isRequired()) {
                        $label->setAttributes('class', 'required');
                    }
                }
                // Swap the element's label placeholder with the rendered label element.
                $labelSearch = '[{' . $name . '_label}]';
                $labelReplace = $label->render(true);
                $labelReplace = substr($labelReplace, 0, -1);
                $template = str_replace($labelSearch, $labelReplace, $template);
                ${$name . '_label'} = $labelReplace;
            }
            // Calculate the element's indentation.
            if (null === $fileContents) {
                $childIndent = substr($template, 0, strpos($template, '[{' . $name . '}]'));
                $childIndent = substr($childIndent, strrpos($childIndent, "\n") + 1);
            } else {
                $childIndent = substr($fileContents, 0, strpos($fileContents, '$' . $name));
                $childIndent = substr($childIndent, strrpos($childIndent, "\n") + 1);
            }
            // Some whitespace clean up
            $length = strlen($childIndent);
            $last = 0;
            $matches = array();
            preg_match_all('/[^\\s]/', $childIndent, $matches, PREG_OFFSET_CAPTURE);
            if (isset($matches[0])) {
                foreach ($matches[0] as $str) {
                    $childIndent = str_replace($str[0], null, $childIndent);
                    $last = $str[1];
                }
            }
            // Final whitespace clean up
            if (null !== $fileContents) {
                $childIndent = substr($childIndent, 0, 0 - abs($length - $last));
            }
            // Set each child element's indentation.
            $childChildren = $child->getChildren();
            $child->removeChildren();
            foreach ($childChildren as $cChild) {
                $cChild->setIndent($childIndent . '    ');
                $child->addChild($cChild);
            }
            // Swap the element's placeholder with the rendered element.
            $elementSearch = '[{' . $name . '}]';
            $elementReplace = $child->render(true, 0, null, $childIndent);
            $elementReplace = substr($elementReplace, 0, -1);
            $elementReplace = str_replace('</select>', $childIndent . '</select>', $elementReplace);
            $elementReplace = str_replace('</fieldset>', $childIndent . '</fieldset>', $elementReplace);
            $template = str_replace($elementSearch, $elementReplace, $template);
            ${$name} = $elementReplace;
        }
        // Set the rendered form content and remove the children.
        if (!$isFile) {
            $this->form->setNodeValue("\n" . $template . "\n" . $this->form->getIndent());
            $this->form->removeChildren();
            $this->output = $this->form->render(true);
        } else {
            $action = $this->action;
            $method = $this->method;
            ob_start();
            include $this->template;
            $this->output = ob_get_clean();
        }
    }