fix: view component attribute fixes (tempestphp#459)

Author: brendt

src/Tempest/Support/src/StringHelper.php

@@ -77,6 +77,11 @@ public function pascal(): self
         return new self(implode('', $studlyWords));
     }
 
+    public function camel(): self
+    {
+        return new self(lcfirst((string) $this->pascal()));
+    }
+
     public function deduplicate(string|array $characters = ' '): self
     {
         $string = $this->string;

src/Tempest/View/src/Elements/ElementFactory.php

@@ -4,6 +4,7 @@
 
 namespace Tempest\View\Elements;
 
+use DOMAttr;
 use DOMElement;
 use DOMNode;
 use DOMText;
@@ -48,8 +49,11 @@ private function makeElement(View $view, DOMNode $node, ?Element $parent): ?Elem
         } else {
             $attributes = [];
 
+            /** @var DOMAttr $attribute */
             foreach ($node->attributes as $attribute) {
-                $attributes[$attribute->name] = $attribute->value;
+                $name = (string) \Tempest\Support\str($attribute->name)->camel();
+
+                $attributes[$name] = $attribute->value;
             }
 
             $element = new GenericElement(

src/Tempest/View/src/Elements/GenericElement.php

@@ -94,9 +94,13 @@ public function getSlot(string $name = 'slot'): ?Element
 
     public function getData(?string $key = null): mixed
     {
+        if ($key && $this->hasAttribute($key)) {
+            return $this->getAttribute($key);
+        }
+
         $parentData = $this->getParent()?->getData() ?? [];
 
-        $data = [...$this->view->getData(), ...$parentData, ...$this->data];
+        $data = [...$this->attributes, ...$this->view->getData(), ...$parentData, ...$this->data];
 
         if ($key) {
             return $data[$key] ?? null;

src/Tempest/View/src/IsView.php

@@ -58,6 +58,11 @@ public function get(string $key): mixed
         return $this->{$key} ?? $this->data[$key] ?? null;
     }
 
+    public function has(string $key): bool
+    {
+        return array_key_exists($key, $this->data) || property_exists($this, $key);
+    }
+
     public function data(mixed ...$params): self
     {
         $this->rawData = [...$this->rawData, ...$params];

src/Tempest/View/src/Renderers/TempestViewRenderer.php

@@ -135,19 +135,7 @@ private function resolveContent(View $view): string
         $path = $view->getPath();
 
         if (! str_ends_with($path, '.php')) {
-            ob_start();
-
-            try {
-                // TODO: find a better way of dealing with views that declare strict types
-                $path = str_replace('declare(strict_types=1);', '', $path);
-
-                /** @phpstan-ignore-next-line */
-                eval('?>' . $path . '<?php');
-            } catch (ParseError) {
-                return $path;
-            }
-
-            return ob_get_clean();
+            return $this->evalContentIsolated($view, $path);
         }
 
         $discoveryLocations = $this->kernel->discoveryLocations;
@@ -161,7 +149,7 @@ private function resolveContent(View $view): string
             throw new Exception("View {$path} not found");
         }
 
-        return $this->resolveContentIsolated($path, $view->getData());
+        return $this->resolveContentIsolated($view, $path);
     }
 
     private function resolveViewComponent(GenericElement $element): ?ViewComponent
@@ -239,9 +227,9 @@ private function renderCollectionElement(View $view, CollectionElement $collecti
     private function renderViewComponent(View $view, ViewComponent $viewComponent, GenericElement $element): string
     {
         $renderedContent = preg_replace_callback(
-            pattern: '/<x-slot\s*(name="(?<name>\w+)")?\s*\/>/',
+            pattern: '/<x-slot\s*(name="(?<name>\w+)")?((\s*\/>)|><\/x-slot>)/',
             callback: function ($matches) use ($view, $element) {
-                $name = $matches['name'] ?? 'slot';
+                $name = $matches['name'] ?: 'slot';
 
                 $slot = $element->getSlot($name);
 
@@ -306,14 +294,53 @@ private function renderGenericElement(View $view, GenericElement $element): stri
         return "<{$element->getTag()}{$attributes}>{$content}</{$element->getTag()}>";
     }
 
-    private function resolveContentIsolated(string $_path, array $_data): string
+    private function resolveContentIsolated(View $_view, string $_path): string
     {
         ob_start();
 
+        $_data = $_view->getData();
+
         extract($_data, flags: EXTR_SKIP);
 
         include $_path;
 
+        $content = ob_get_clean();
+
+        // If the view defines local variables, we add them here to the view object as well
+        foreach (get_defined_vars() as $key => $value) {
+            if (! $_view->has($key)) {
+                $_view->data(...[$key => $value]);
+            }
+        }
+
+        return $content;
+    }
+
+    private function evalContentIsolated(View $_view, string $_content): string
+    {
+        ob_start();
+
+        $_data = $_view->getData();
+
+        extract($_data, flags: EXTR_SKIP);
+
+        try {
+            // TODO: find a better way of dealing with views that declare strict types
+            $_content = str_replace('declare(strict_types=1);', '', $_content);
+
+            /** @phpstan-ignore-next-line */
+            eval('?>' . $_content . '<?php');
+        } catch (ParseError) {
+            return $_content;
+        }
+
+        // If the view defines local variables, we add them here to the view object as well
+        foreach (get_defined_vars() as $key => $value) {
+            if (! $_view->has($key)) {
+                $_view->data(...[$key => $value]);
+            }
+        }
+
         return ob_get_clean();
     }
 }

src/Tempest/View/src/View.php

@@ -16,6 +16,8 @@ public function getRaw(string $key): mixed;
 
     public function get(string $key): mixed;
 
+    public function has(string $key): bool;
+
     public function data(...$params): self;
 
     public function raw(string $name): ?string;

src/Tempest/View/src/ViewComponentView.php

@@ -4,8 +4,6 @@
 
 namespace Tempest\View;
 
-use Tempest\View\Elements\GenericElement;
-
 final class ViewComponentView implements View
 {
     use IsView;
@@ -18,15 +16,14 @@ public function __construct(
         $this->path = $content;
     }
 
-    public function __get(string $name): mixed
+    public function getData(): array
     {
-        $value = null;
-
-        if ($this->wrappingElement instanceof GenericElement) {
-            $value = $this->wrappingElement->getAttribute($name);
-        }
+        return $this->wrappingElement->getData();
+    }
 
-        return $value ?? $this->wrappingElement->getData($name);
+    public function __get(string $name): mixed
+    {
+        return $this->wrappingElement->getData($name);
     }
 
     public function __call(string $name, array $arguments)

tests/Fixtures/Views/view-component-attribute-without-this-a.view.php

@@ -0,0 +1,3 @@
+<x-component name="x-view-component-attribute-without-this-a">
+    <?= $var ?? 'nothing' ?>
+</x-component>

tests/Fixtures/Views/view-component-attribute-without-this-b.view.php

@@ -0,0 +1 @@
+<x-view-component-attribute-without-this-a var="fromString" />

tests/Fixtures/Views/view-component-with-camelcase-attribute-a.view.php

@@ -0,0 +1,3 @@
+<x-component name="x-view-component-with-camelcase-attribute-a">
+    <?= $metaType ?? 'nothing' ?>
+</x-component>