Merge d86064bee7 into 33929e2992

Includes the following large-scale changes:
- Impoved barrier between model and view layers
- Improved casting of scalar to relevant DBField types
- Improved capabilities for rendering arbitrary data in templates

src/Control/Controller.php

@@ -91,7 +91,7 @@ class Controller extends RequestHandler implements TemplateGlobalProvider
         'handleIndex',
     ];
 
-    private ?TemplateEngine $templateEngine = null;
+    protected ?TemplateEngine $templateEngine = null;
 
     public function __construct()
     {

src/View/SSTemplateParser.peg

@@ -1149,7 +1149,9 @@ class SSTemplateParser extends Parser implements TemplateParser
         if ($res['ArgumentCount'] != 0) {
             throw new SSTemplateParseException('Base_tag takes no arguments', $this);
         }
-        return '$val .= \\SilverStripe\\View\\SSViewer::get_base_tag($val);';
+        $code = '$isXhtml = preg_match(\'/<!DOCTYPE[^>]+xhtml/i\', $val);';
+        $code .= PHP_EOL . '$val .= \\SilverStripe\\View\\SSViewer::get_base_tag($isXhtml);';
+        return $code;
     }
 
     /**

src/View/SSTemplateParser.php

@@ -4434,7 +4434,9 @@ class SSTemplateParser extends Parser implements TemplateParser
         if ($res['ArgumentCount'] != 0) {
             throw new SSTemplateParseException('Base_tag takes no arguments', $this);
         }
-        return '$val .= \\SilverStripe\\View\\SSViewer::get_base_tag($val);';
+        $code = '$isXhtml = preg_match(\'/<!DOCTYPE[^>]+xhtml/i\', $val);';
+        $code .= PHP_EOL . '$val .= \\SilverStripe\\View\\SSViewer::get_base_tag($isXhtml);';
+        return $code;
     }
 
     /**

src/View/SSViewer.php

@@ -413,20 +413,17 @@ PHP;
      * Return an appropriate base tag for the given template.
      * It will be closed on an XHTML document, and unclosed on an HTML document.
      *
-     * @param string $contentGeneratedSoFar The content of the template generated so far; it should contain
-     * the DOCTYPE declaration.
-     * @return string
+     * @param bool $isXhtml Whether the DOCTYPE is xhtml or not.
      */
-    public static function get_base_tag($contentGeneratedSoFar)
+    public static function get_base_tag(bool $isXhtml = false): string
     {
         // Base href should always have a trailing slash
         $base = rtrim(Director::absoluteBaseURL(), '/') . '/';
 
-        // Is the document XHTML?
-        if (preg_match('/<!DOCTYPE[^>]+xhtml/i', $contentGeneratedSoFar ?? '')) {
+        if ($isXhtml) {
             return "<base href=\"$base\" />";
         } else {
-            return "<base href=\"$base\"><!--[if lte IE 6]></base><![endif]-->";
+            return "<base href=\"$base\">";
         }
     }
 

src/View/ViewLayerData.php

@@ -21,6 +21,8 @@ class ViewLayerData implements IteratorAggregate, Stringable, Countable
 
     public const TYPE_METHOD = 'method';
 
+    public const TYPE_ANY = 'any';
+
     private object $data;
 
     public function __construct(mixed $data, mixed $source = null, string $name = '')
@@ -42,18 +44,21 @@ class ViewLayerData implements IteratorAggregate, Stringable, Countable
      */
     public function count(): int
     {
+        if (ClassInfo::hasMethod($this->data, 'count')) {
+            $count = $this->callDataMethod($this->data, 'count', []);
+            if ($count !== null) {
+                return $count;
+            }
+        }
+        if (isset($this->data->count)) {
+            return $this->data->count;
+        }
         if (is_countable($this->data)) {
             return count($this->data);
         }
         if (ClassInfo::hasMethod($this->data, 'getIterator')) {
             return count($this->data->getIterator());
         }
-        if (ClassInfo::hasMethod($this->data, 'count')) {
-            return $this->data->count();
-        }
-        if (isset($this->data->count)) {
-            return $this->data->count;
-        }
         return 0;
     }
 
@@ -133,9 +138,9 @@ class ViewLayerData implements IteratorAggregate, Stringable, Countable
 
     // @TODO We need this publicly right now for the ss template engine method args, but need to check if
     // we can rely on it, since twig won't be calling this at all
-    public function getRawDataValue(string $name, string $type, array $arguments = []): mixed
+    public function getRawDataValue(string $name, string $type = ViewLayerData::TYPE_ANY, array $arguments = []): mixed
     {
-        if ($type !== ViewLayerData::TYPE_METHOD && $type !== ViewLayerData::TYPE_PROPERTY) {
+        if ($type !== ViewLayerData::TYPE_ANY && $type !== ViewLayerData::TYPE_METHOD && $type !== ViewLayerData::TYPE_PROPERTY) {
             throw new InvalidArgumentException('$type must be one of the TYPE_* constant values');
         }
 

tests/php/Forms/GridField/GridField_URLHandlerTest/TestComponent.php

@@ -56,7 +56,7 @@ class TestComponent extends RequestHandler implements GridField_URLHandler
     public function showform(GridField $gridField, HTTPRequest $request)
     {
         $this->setRequest($request);
-        return "<head>" . SSViewer::get_base_tag("") . "</head>" . $this->Form($gridField, $request)->forTemplate();
+        return "<head>" . SSViewer::get_base_tag() . "</head>" . $this->Form($gridField, $request)->forTemplate();
     }
 
     /**

tests/php/Forms/GridField/GridField_URLHandlerTest/TestComponent_ItemRequest.php

@@ -36,7 +36,7 @@ class TestComponent_ItemRequest extends RequestHandler
 
     public function showform()
     {
-        return "<head>" . SSViewer::get_base_tag("") . "</head>" . $this->Form()->forTemplate();
+        return "<head>" . SSViewer::get_base_tag() . "</head>" . $this->Form()->forTemplate();
     }
 
     public function Form()