[5.x] Add frontend forms support for Group fieldtype

resources/views/extend/forms/fields/group.antlers.html

@@ -0,0 +1,16 @@
+<div {{ if js_driver }}{{ js_attributes }}{{ /if }}>
+    {{ fields }}
+        <div class="pb-2">
+            <label>
+                {{ display }}
+                {{ if validate | contains:required }}
+                    <sup class="text-red">*</sup>
+                {{ /if }}
+            </label>
+            <div class="p-1">{{ field }}</div>
+            {{ if error }}
+                <p class="text-gray-500">{{ error }}</p>
+            {{ /if }}
+        </div>
+    {{ /fields }}
+</div>

resources/views/extend/forms/fields/text.antlers.html

@@ -1,6 +1,7 @@
+<!-- TODO: update rest of fields to use name -->
 <input
     type="{{ input_type ?? 'text' }}"
-    name="{{ handle }}"
+    name="{{ name }}"
     value="{{ value }}"
     {{ if placeholder }}placeholder="{{ placeholder }}"{{ /if }}
     {{ if character_limit }}maxlength="{{ character_limit }}"{{ /if }}

src/Tags/Concerns/RendersForms.php

@@ -142,13 +142,23 @@ protected function getRenderableField($field, $errorBag = 'default', $manipulate
             ->filter()->all();
 
         $data = array_merge($configDefaults, $field->toArray(), [
+            'handle' => $field->handle(),
+            'name' => $this->convertDottedHandleToInputName($field->handle()),
             'instructions' => $field->instructions(),
             'error' => $errors->first($field->handle()) ?: null,
             'default' => $field->value() ?? $field->defaultValue(),
-            'old' => old($field->handle()),
+            'old' => old($field->handle()), // TODO: Ensure dotted path for old input works here.
             'value' => $value,
         ], $field->fieldtype()->extraRenderableFieldData());
 
+        if ($field->fieldtype()->handle() === 'group') {
+            $data['fields'] = collect($field->fieldtype()->fields()->all())
+                ->map(fn ($child) => $child->setHandle($field->handle().'.'.$child->handle()))
+                ->map(fn ($child) => $this->getRenderableField($child, $errorBag, $manipulateDataCallback))
+                ->values()
+                ->all();
+        }
+
         if ($manipulateDataCallback instanceof Closure) {
             $data = $manipulateDataCallback($data, $field);
         }
@@ -158,6 +168,17 @@ protected function getRenderableField($field, $errorBag = 'default', $manipulate
         return $data;
     }
 
+    protected function convertDottedHandleToInputName(string $handle): string
+    {
+        $parts = collect(explode('.', $handle));
+
+        $first = $parts->pull(0);
+
+        return $first.$parts
+            ->map(fn ($part) => '['.$part.']')
+            ->join('');
+    }
+
     /**
      * Minify field html.
      *