Allow all users to create and link people tags.

controllers/ProvideAutoSuggest.php

@@ -14,12 +14,20 @@ class ProvideAutoSuggest extends JSONController
 		if (!Registry::get('user')->isLoggedIn())
 			throw new NotAllowedException();
 
-		if (!isset($_GET['type']))
+		if (!isset($_REQUEST['type']))
 			throw new UnexpectedValueException('Unsupported autosuggest request.');
 
-		if ($_GET['type'] === 'tags' && isset($_GET['data']))
+		if ($_REQUEST['type'] === 'tags' && isset($_REQUEST['data']))
+			return $this->handleTagSearch();
+
+		if ($_REQUEST['type'] === 'createtag' && isset($_REQUEST['tag']))
+			return $this->handleTagCreation();
+	}
+
+	private function handleTagSearch()
+	{
 		{
-			$data = array_unique(explode(' ', urldecode($_GET['data'])));
+			$data = array_unique(explode(' ', urldecode($_REQUEST['data'])));
 			$data = array_filter($data, function($item) {
 				return strlen($item) >= 3;
 			});
@@ -30,7 +38,7 @@ class ProvideAutoSuggest extends JSONController
 			if (count($data) === 0)
 				return;
 
-			$results = Tag::match($data);
+			$results = Tag::matchPeople($data);
 			foreach ($results as $id_tag => $tag)
 				$this->payload['items'][] = [
 					'label' => $tag,
@@ -38,4 +46,35 @@ class ProvideAutoSuggest extends JSONController
 				];
 		}
 	}
+
+	private function handleTagCreation()
+	{
+		// It better not already exist!
+		if (Tag::exactMatch($_REQUEST['tag']))
+		{
+			$this->payload = ['error' => true, 'msg' => "Tag already exists!"];
+			return;
+		}
+
+		$label = htmlentities(trim($_REQUEST['tag']));
+		$slug = strtr($label, [' ' => '-']);
+		$tag = Tag::createNew([
+			'tag' => $label,
+			'kind' => 'Person',
+			'slug' => $slug,
+		]);
+
+		// Did we succeed?
+		if (!$tag)
+		{
+			$this->payload = ['error' => true, 'msg' => "Could not create tag."];
+			return;
+		}
+
+		$this->payload = [
+			'success' => true,
+			'label' => $tag->tag,
+			'id_tag' => $tag->id_tag,
+		];
+	}
 }