add note about the "p3k-food" parameter. fix undefined $url variable error.

controllers/controllers.php

@@ -182,6 +182,7 @@ $app->post('/post', function() use($app) {
     $entry->save();
 
     // Send to the micropub endpoint if one is defined, and store the result
+    $url = false;
 
     if($user->micropub_endpoint) {
       $mp_request = array(
@@ -208,11 +209,15 @@ $app->post('/post', function() use($app) {
       }
 
       $entry->save();
+    }
+
+    if($url) {
+      $app->redirect($url);
     } else {
+      // TODO: Redirect to an error page or show an error on the teacup post page
       $url = Config::$base_url . $user->url . '/' . $entry->id;
+      $app->redirect($url);
     }
-
-    $app->redirect($url);
   }
 });
 

views/new-post.php

@@ -74,6 +74,10 @@
               <td>access token</td>
               <td>String of length <b><?= strlen($this->access_token) ?></b><?= (strlen($this->access_token) > 0) ? (', ending in <code>' . substr($this->access_token, -7) . '</code>') : '' ?> (should be greater than length 0)</td>
             </tr>
+            <tr>
+              <td>p3k-food</td>
+              <td>The button you tap (or your custom text) will be sent to your Micropub endpoint in a field named <code>p3k-food</code></td>
+            </tr>
           </table>
         </div>