Add a basic view count to Phame

Summary: This adds a very very basic view count to Phame, so bloggers can get some idea which posts are more popular than others. Anything more than this I think should be Facts or Google Analytics.

Test Plan: Write a new post, see post count. Reload page, post count goes up. Archive post, post count stays the same.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Differential Revision: https://secure.phabricator.com/D18446

resources/sql/autopatches/20170820.phame.01.post.views.sql

···
+ALTER TABLE {$NAMESPACE}_phame.phame_post
+  ADD views INTEGER NOT NULL;

resources/sql/autopatches/20170820.phame.02.post.views.sql

···
+UPDATE {$NAMESPACE}_phame.phame_post
+  SET views = 0;

src/__phutil_library_map__.php

···
     'PhamePostTransactionQuery' => 'applications/phame/query/PhamePostTransactionQuery.php',
     'PhamePostTransactionType' => 'applications/phame/xaction/PhamePostTransactionType.php',
     'PhamePostViewController' => 'applications/phame/controller/post/PhamePostViewController.php',
+    'PhamePostViewsTransaction' => 'applications/phame/xaction/PhamePostViewsTransaction.php',
     'PhamePostVisibilityTransaction' => 'applications/phame/xaction/PhamePostVisibilityTransaction.php',
     'PhameSchemaSpec' => 'applications/phame/storage/PhameSchemaSpec.php',
     'PhameSite' => 'applications/phame/site/PhameSite.php',
···
     'PhamePostTransactionQuery' => 'PhabricatorApplicationTransactionQuery',
     'PhamePostTransactionType' => 'PhabricatorModularTransactionType',
     'PhamePostViewController' => 'PhameLiveController',
+    'PhamePostViewsTransaction' => 'PhamePostTransactionType',
     'PhamePostVisibilityTransaction' => 'PhamePostTransactionType',
     'PhameSchemaSpec' => 'PhabricatorConfigSchemaSpec',
     'PhameSite' => 'PhabricatorSite',

src/applications/phame/controller/post/PhamePostViewController.php

···
     $is_live = $this->getIsLive();
     $is_external = $this->getIsExternal();
 
+    // Register a blog "view" count
+    //
+    if (!$post->isDraft() && !$post->isArchived()) {
+      $unguarded = AphrontWriteGuard::beginScopedUnguardedWrites();
+      $xactions = array();
+      $xactions[] = id(new PhamePostTransaction())
+        ->setTransactionType(PhamePostViewsTransaction::TRANSACTIONTYPE)
+        ->setNewValue(null);
+
+      $editor = id(new PhamePostEditor())
+        ->setActor($viewer)
+        ->setContentSourceFromRequest($request)
+        ->setContinueOnMissingFields(true)
+        ->setContinueOnNoEffect(true);
+
+      $editor->applyTransactions($post, $xactions);
+      unset($unguarded);
+    }
+
     $header = id(new PHUIHeaderView())
       ->addClass('phame-header-bar')
       ->setUser($viewer);
···
     $properties = id(new PHUIPropertyListView())
       ->setUser($viewer)
       ->setObject($post);
+
+    $views = id(new PhutilNumber($post->getViews()));
+    $properties->addProperty(
+      pht('Views'),
+      pht('%s', $views));
 
     $is_live = $this->getIsLive();
     $is_external = $this->getIsExternal();

src/applications/phame/editor/PhamePostEditor.php

···
     if ($object->isDraft() || $object->isArchived()) {
       return false;
     }
+    foreach ($xactions as $xaction) {
+      switch ($xaction->getTransactionType()) {
+        case PhamePostViewsTransaction::TRANSACTIONTYPE:
+        return false;
+      }
+    }
     return true;
   }
 

src/applications/phame/storage/PhamePost.php

···
   protected $phameTitle;
   protected $body;
   protected $visibility;
+  protected $views;
   protected $configData;
   protected $datePublished;
   protected $blogPHID;
···
       ->setBlogPHID($blog->getPHID())
       ->attachBlog($blog)
       ->setDatePublished(PhabricatorTime::getNow())
-      ->setVisibility(PhameConstants::VISIBILITY_PUBLISHED);
+      ->setVisibility(PhameConstants::VISIBILITY_PUBLISHED)
+      ->setViews(0);
 
     return $post;
   }
···
         'subtitle' => 'text64',
         'phameTitle' => 'sort64?',
         'visibility' => 'uint32',
+        'views' => 'uint32',
         'mailKey' => 'bytes20',
         'headerImagePHID' => 'phid?',
 

src/applications/phame/xaction/PhamePostViewsTransaction.php

···
+<?php
+
+final class PhamePostViewsTransaction
+  extends PhamePostTransactionType {
+
+  const TRANSACTIONTYPE = 'phame.post.views';
+
+  public function generateOldValue($object) {
+    return $object->getViews();
+  }
+
+  public function applyInternalEffects($object, $value) {
+    $views = $object->getViews();
+    $views++;
+    $object->setViews($views);
+  }
+
+}