Make Gallery3 more RESTful.

Create Item_Controller as a common superclass for Album_Controller and
Photo_Controller.  Change routes to route requests to Item_Controller
for dispatching, which in turn will generate get/post/put/delete
requests to the controlller so that each controller has a RESTful
surface.

Change in_place editing to take advantage of this.

4 files changed, 88 insertions, 46 deletions

diff --git a/core/controllers/album.php b/core/controllers/album.php
index d6b457d6..c94bcbef 100644
--- a/core/controllers/album.php
+++ b/core/controllers/album.php
@@ -17,33 +17,24 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA  02110-1301, USA.
  */
-class Album_Controller extends Template_Controller {
-  public $template = "page.html";
-
-  public function view($id) {
-    $item = ORM::factory("item")->where("id", $id)->find();
-    if (empty($item->id)) {
-      return Kohana::show_404();
-    }
-
+class Album_Controller extends Item_Controller {
+  public function get($item) {
     /** @todo: these need to be pulled from the database */
     $theme_name = "default";
     $page_size = 9;
 
+    $template = new View("page.html");
+
     $page = $this->input->get("page", "1");
-    $theme = new Theme($theme_name, $this->template);
+    $theme = new Theme($theme_name, $template);
 
-    $this->template->content = new View("album.html");
-    $this->template->set_global('page_size', $page_size);
-    $this->template->set_global('item', $item);
-    $this->template->set_global('children', $item->children($page_size, ($page-1) * $page_size));
-    $this->template->set_global('parents', $item->parents());
-    $this->template->set_global('theme', $theme);
+    $template->set_global('page_size', $page_size);
+    $template->set_global('item', $item);
+    $template->set_global('children', $item->children($page_size, ($page-1) * $page_size));
+    $template->set_global('parents', $item->parents());
+    $template->set_global('theme', $theme);
+    $template->content = new View("album.html");
 
-    /** @todo: move this up to a base class */
-    if (Session::instance()->get("use_profiler", false)) {
-      $profiler = new Profiler();
-      print $profiler->render();
-    }
+    print $template->render();
   }
 }
diff --git a/core/controllers/item.php b/core/controllers/item.php
index bb670f8a..013b00c6 100644
--- a/core/controllers/item.php
+++ b/core/controllers/item.php
@@ -18,24 +18,77 @@
  * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA  02110-1301, USA.
  */
 class Item_Controller extends Controller {
-  public function view($id) {
+
+  public function dispatch($id) {
+    /** @todo this needs security checks */
     $item = ORM::factory("item")->where("id", $id)->find();
     if (empty($item->id)) {
       return Kohana::show_404();
     }
 
+    /**
+     * We're expecting to run in an environment that only supports GET/POST, so expect to tunnel
+     * PUT/DELETE through POST.
+     */
     if (request::method() == 'get') {
-      if ($item->type == 'album') {
-        url::redirect("album/$id");
-      } else {
-        url::redirect("photo/$id");
+      $this->get($item);
+
+      if (Session::instance()->get("use_profiler", false)) {
+        $profiler = new Profiler();
+        print $profiler->render();
+      }
+      return;
+    }
+
+    switch ($this->input->post('__action')) {
+    case 'put':
+      return $this->put($item);
+
+    case 'delete':
+      return $this->delete($item);
+
+    default:
+      return $this->post($item);
+    }
+  }
+
+  public function get($item) {
+    // Redirect to the more specific resource type, since it will render
+    // differently.  We could also just delegate here, but it feels more appropriate
+    // to have a single canonical resource mapping.
+    return url::redirect("{$item->type}/$item->id");
+  }
+
+  public function put($item) {
+  }
+
+  public function delete($item) {
+    /** @todo: needs security checks */
+    $parent = $item->parent();
+    if ($parent->id) {
+      $item->delete();
+    }
+    url::redirect("{$parent->type}/{$parent->id}");
+  }
+
+  public function post($item) {
+    /** @todo Productionize this. */
+    // 1) Figure out how to do the right validation here.  Validate the form input and apply it to
+    //    the model as appropriate.
+    // 2) Figure out how to dispatch according to the needs of the client.  Ajax requests from
+    //    jeditable will want the changed field back, and possibly the whole item in json.
+    //
+    // For now let's establish a simple protocol where the client passes in a __return parameter
+    // that specifies which field it wants back from the item.  Later on we can expand that to
+    // include a data format, etc.
+
+    $post = $this->input->post();
+    foreach (array("title", "description") as $field) {
+      if (array_key_exists($field, $post)) {
+        $value = $item->$field = $post[$field];
       }
-    } else {
-      $key = $this->input->post("key");
-      $value = $this->input->post("value");
-      $item->$key = $value;
-      $item->save();
-      print $value;
     }
+    $item->save();
+    print $item->{$post['__return']};
   }
 }
diff --git a/core/controllers/photo.php b/core/controllers/photo.php
index 45db4b02..55ab6247 100644
--- a/core/controllers/photo.php
+++ b/core/controllers/photo.php
@@ -17,22 +17,19 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA  02110-1301, USA.
  */
-class Photo_Controller extends Template_Controller {
-  public $template = "page.html";
+class Photo_Controller extends Item_Controller {
+  public function get($item) {
+    $template = new View("page.html");
 
-  public function view($id) {
-    $item = ORM::factory("item")->where("id", $id)->find();
-    if (empty($item->id)) {
-      return Kohana::show_404();
-    }
-
-    $this->template->content = new View("photo.html");
+    /** @todo: this needs to be data-driven */
+    $theme = new Theme("default", $template);
 
-    $this->template->set_global('item', $item);
-    $this->template->set_global('children', $item->children());
-    $this->template->set_global('parents', $item->parents());
+    $template->set_global('item', $item);
+    $template->set_global('children', $item->children());
+    $template->set_global('parents', $item->parents());
+    $template->set_global('theme', $theme);
+    $template->content = new View("photo.html");
 
-    /** @todo: this needs to be data-driven */
-    $this->template->set_global('theme', new Theme("default", $this->template));
+    print $template->render();
   }
 }
diff --git a/core/controllers/welcome.php b/core/controllers/welcome.php
index c05cba68..786d7bcc 100644
--- a/core/controllers/welcome.php
+++ b/core/controllers/welcome.php
@@ -119,6 +119,7 @@ class Welcome_Controller extends Template_Controller {
 
   public function profiler() {
     Session::instance()->set("use_profiler", $this->input->get("use_profiler", false));
+    $this->auto_render = false;
     url::redirect("welcome");
   }