adds template component

src/base/ContextBag.php

@@ -2,8 +2,12 @@
 
 namespace markhuot\keystone\base;
 
-class ContextBag
+use Iterator;
+
+class ContextBag implements Iterator
 {
+    protected int $index = 0;
+
     public function __construct(
         protected array $context
     ) {
@@ -18,4 +22,29 @@ public function __get($key)
     {
         return $this->context[$key] ?? null;
     }
+
+    public function current(): mixed
+    {
+        return $this->context[array_keys($this->context)[$this->index]];
+    }
+
+    public function key(): mixed
+    {
+        return array_keys($this->context)[$this->index];
+    }
+
+    public function next(): void
+    {
+        $this->index++;
+    }
+
+    public function rewind(): void
+    {
+        $this->index = 0;
+    }
+
+    public function valid(): bool
+    {
+        return isset(array_keys($this->context)[$this->index]);
+    }
 }

src/base/SlotDefinition.php

@@ -6,6 +6,8 @@
 use markhuot\keystone\models\Component;
 use Twig\Markup;
 
+use function markhuot\craftpest\helpers\test\dd;
+
 class SlotDefinition
 {
     public function __construct(
@@ -98,6 +100,17 @@ public function render(array $context = []): Markup
 
     public function __toString(): string
     {
-        return $this->component->getSlot($this->name);
+        try {
+            return $this->component->getSlot($this->name);
+        } catch (\Throwable $e) {
+            // throw the previous exception, when present, because this
+            // exception is usually just that ->getSlot is not a string
+            if ($e->getPrevious()) {
+                throw $e->getPrevious();
+            }
+            else {
+                throw $e;
+            }
+        }
     }
 }

src/listeners/RegisterDefaultComponentTypes.php

@@ -18,6 +18,7 @@ public function handle(RegisterComponentTypes $event): void
         $event->registerTwigTemplate('keystone/section', 'cp:keystone/components/section.twig');
         $event->registerTwigTemplate('keystone/tab', 'cp:keystone/components/tab.twig');
         $event->registerTwigTemplate('keystone/tabs', 'cp:keystone/components/tabs.twig');
+        $event->registerTwigTemplate('keystone/template', 'cp:keystone/components/template.twig');
         $event->registerTwigTemplate('keystone/text', 'cp:keystone/components/text.twig');
     }
 }

src/templates/components/entry.twig

@@ -2,20 +2,12 @@
 {# it would be nice to set `template` to a `craft\fields\Dropdown` but that causes the edit entry page to not render and redirect to the homepage without any errors #}
 {% export propTypes = {
     entry: field('craft\\fields\\Entries'),
-    template: field('craft\\fields\\Dropdown').options([
-        {label: 'Default', value: '' },
-        {label: 'Link', value: 'keystone/entry/link'},
-    ]),
 } %}
 {% export summary = props.entry.one().title|default %}
 {% export category = "Data" %}
 {% set slot = component.getType().defineSlot() %}
 {% for entry in props.entry %}
-    {% if props.template.value %}
-        {% include props.template.value with {entry: entry} only %}
-    {% else %}
-        {% do component.mergeContext({entry: entry}) %}
-        {{ slot }}
-        {% do component.mergeContext({entry: null}) %}
-    {% endif %}
+    {% do component.mergeContext({entry: entry}) %}
+    {{ slot }}
+    {% do component.mergeContext({entry: null}) %}
 {% endfor %}

src/templates/components/template.twig

@@ -0,0 +1,11 @@
+{% if props.template %}
+    {% set parts = props.template|split(':') %}
+    {% if parts|length == 2 %}
+        {% set templateMode = parts[0] %}
+        {% set template = parts[1] %}
+    {% else %}
+        {% set templateMode = 'site' %}
+        {% set template = parts[0] %}
+    {% endif %}
+    {{ craft.app.getView().renderTemplate(template, _context|merge(component.getContext()), templateMode)|raw }}
+{% endif %}

tests/components/TemplateTest.php

@@ -0,0 +1,29 @@
+<?php
+
+use markhuot\craftpest\factories\Entry;
+use markhuot\craftpest\web\TestableResponse;
+use markhuot\keystone\models\Component;
+
+use function markhuot\craftpest\helpers\test\dd;
+
+it('renders template component', function () {
+    $component = Component::factory()->type('keystone/template')->create();
+    $component->data->merge(['template' => 'basic-template'])->save();
+
+    expect(trim($component->render()))->toBe('foo');
+});
+
+it('renders entry links', function () {
+    $entry = Entry::factory()->create();
+
+    $entryComponent = Component::factory()->type('keystone/entry')->create();
+    $entryComponent->data->merge(['entry' => [$entry->id]])->save();
+
+    $templateComponent = Component::factory()->type('keystone/template')->path($entryComponent->id)->create();
+    $templateComponent->data->merge(['template' => 'cp:keystone/entry/link'])->save();
+
+    $html = $entryComponent->render();
+    expect((new TestableResponse(['content' => $html]))->querySelector('a'))
+        ->getNodeOrNodes(fn ($node) => $node->getNode(0)->getAttribute('href'))->toBe($entry->uri)
+        ->getText()->toBe($entry->title);
+});

tests/templates/basic-template.twig

@@ -0,0 +1 @@
+foo